cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fifty years of High Time Resolution Astrophysics at La Silla : results and prospects
Creators: name: Gouiffes, Christian
name: Barbieri, C.
name: Bouchet, P.
name: Kannbach, G.
name: Motch, C.
name: Pedersen, H.
name: Shearer, A.
Publisher: name: Zenodo
Year: 2019

description: High time-resolution astrophysics (HTRA) involves observations and studies of cosmic sources on timescales of seconds to sub-milliseconds. Indeed, this observing tool gives access to information on a wide variety of astronomical objects from solar system bodies to the recently discovered Fast Radio Bursts. Since the 1980s, several programmes were conducted at the ESO 50cm and 1m, the Danish 1.54m, the Gamma-ray burst Monitoring System and the 3.6m telescope for pulsar studies. The discovery of SN1987a was a major event and the search for a pulsed signature triggered a special project, thanks to the dedication of the La Silla team. Today, new high performance 1 and 2 D cameras at NTT (Iqueye, Ultracam, etc) have produced significant
scientific outputs whereas the Galway fast polarimeter GASP at the 3.6m is currently showing new and original results on pulsars. During this talk, we will describe the tribute from La Silla to HTRA and prospects.
X-ray Properties of the GigaHertz-Peaked and Compact Steep Spectrum Sources
Creators: name: Siemiginowska, Aneta
name: LaMassa, Stephanie
name: Aldcroft, Thomas L.
name: Bechtold, Jill
name: Elvis, Martin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present {\it Chandra} X-ray Observatory observations of Giga-Hertz Peaked Spectrum (GPS) and Compact Steep Spectrum (CSS) radio sources. The {\it Chandra} sample contains 13 quasars and 3 galaxies with measured 2-10 keV X-ray luminosity within $10^{42} - 10^{46}$ erg s$^{-1}$. We detect all of the sources, five of which are observed in X-ray for the first time. We study the X-ray spectral properties of the sample. The measured absorption columns in the quasars are different than those in the galaxies in the sense that the quasars show no absorption (with limits $\sim 10^{21} \rm cm^{-2}$) while the galaxies have large absorption columns ($> 10^{22} \rm cm^{-2}$) consistent with previous findings. The median photon index of the sources with high S/N is $Γ=1.84 \pm0.24$ and it is larger than the typical index of radio loud quasars. The arcsec resolution of {\it Chandra} telescope allows us to investigate X-ray extended emission, and look for diffuse components and X-ray jets. We found X-ray jets in two quasars (PKS 1127-145, B2 0738+32), an X-ray cluster surrounding a CSS quasar (z=1.1, 3C 186), detected a possible binary structure in 0941-080 galaxy and an extended diffuse emission in galaxy PKS B2 1345+12. We discuss our results in the context of X-ray emission processes and radio source evolution. We conclude that the X-ray emission in these sources is most likely unrelated to a relativistic jet, while the sources' radio-loudness may suggest a high radiative efficiency of the jet power in these sources.
description: 15 pages, to be published in ApJ
REM - automatic for the people : a short story of a small telescope
Creators: name: Molinari, Emilio
Publisher: name: Zenodo
Year: 2019

description: Since 2003 the small robotic telescope REM is working on the hill of la Silla. Born for fast follow up of GRB it helped astronomers to catch non only first onset of the optical afterglow, but also the first hight frequency time domain thanks to its ads-on Tortora. Its life support has been since then assured by a small task force of travelling astronomers and the vital support by the ESO technical team on the mountain. Thus REM continued its  contribution to various fields, monitoring AGNs, blazars, pulsating stars, exoplanets... Lately, the small robotic telescope was also able to catch the blue light of the kilonova resulted from a double neutron star merging, the 2017 gravitational wave optical counterpart.
Offset-locking-based frequency stabilization of external cavity diode lasers for long-distance quantum communication
Creators: name: Miyashita, Takuto
name: Kondo, Takeshi
name: Ikeda, Kohei
name: Yoshii, Kazumichi
name: Hong, Feng-Lei
name: Horikiri, Tomoyuki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum repeaters are required for long-distance quantum communication. For efficient coupling of quantum entangled photon sources with narrow-linewidth quantum memories we performed the frequency stabilization of two lasers at 1514 and 1010 nm. The 1514 nm pump laser of the entangled photon source exhibited a frequency stability of 3.6 \times 10^{-12} (τ= 1 s). The 1010 nm pump laser of the wavelength conversion system exhibited a frequency stability of 3.4 \times 10^{-12} (τ= 1 s). The stabilities of both lasers were approximately two orders of magnitude smaller than the frequency width of 4 MHz of the Pr:YSO quantum memory. Such frequency-stabilized lasers can realize the remote coupling of a quantum memory and an entangled photon source in quantum repeaters.
description: 17 pages, 5 figures
Non-existence of Extended Holographic Dark Energy with Hubble Horizon
Creators: name: Gong, Yungui
name: Liu, Jie
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The extended holographic dark energy model with the Hubble horizon as the infrared cutoff avoids the problem of the circular reasoning of the holographic dark energy model. We show that the infrared cutoff of the extended holographic dark energy model cannot be the Hubble horizon provided that the Brans-Dicke parameter $ω$ satisfies the experimental constraint $ω> 10^4$, and this is proved as a no-go theorem. The no-go theorem also applies to the case in which the dark matter interacts with the dark energy.
description: 12 pages with revtex, 4 figures, v2: minor corrections to match the version appeared in JCAP
Modeling Repulsive Gravity with Creation
Creators: name: Vishwakarma, R. G.
name: Narlikar, J. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: There is a growing interest in the cosmologists for theories with negative energy scalar fields and creation, in order to model a repulsive gravity. The classical steady state cosmology proposed by Bondi, Gold and Hoyle in 1948, was the first such theory which used a negative kinetic energy creation field to invoke creation of matter. We emphasize that creation plays very crucial role in cosmology and provides a natural explanation to the various explosive phenomena occurring in local (z<0.1) and extra galactic universe. We exemplify this point of view by considering the resurrected version of this theory - the quasi-steady state theory, which tries to relate creation events directly to the large scale dynamics of the universe and supplies more natural explanations of the observed phenomena. Although the theory predicts a decelerating universe at the present era, it explains successfully the recent SNe Ia observations (which require an accelerating universe in the standard cosmology), as we show in this paper by performing a Bayesian analysis of the data.
description: The paper uses an old SNeIa dataset. With the new improved data, for example the updated gold sample (Riess et al, astro-ph/0611572), the fit improves considerably (\chi^2/DoF=197/180 and a probability of goodness-of-fit=18%)
LIBRA: An Economical Hybrid Approach for Cloud Applications with Strict SLAs
Creators: name: Raza, Ali
name: Zhang, Zongshun
name: Akhtar, Nabeel
name: Isahagian, Vatche
name: Matta, Ibrahim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Function-as-a-Service (FaaS) has recently emerged to reduce the deployment cost of running cloud applications compared to Infrastructure-as-a-Service (IaaS). FaaS follows a serverless 'pay-as-you-go' computing model; it comes at a higher cost per unit of execution time but typically application functions experience lower provisioning time (startup delay). IaaS requires the provisioning of Virtual Machines, which typically suffer from longer cold-start delays that cause higher queuing delays and higher request drop rates. We present LIBRA, a balanced (hybrid) approach that leverages both VM-based and serverless resources to efficiently manage cloud resources for the applications. LIBRA closely monitors the application demand and provisions appropriate VM and serverless resources such that the running cost is minimized and Service-Level Agreements are met. Unlike state of the art, LIBRA not only hides VM cold-start delays, and hence reduces response time, by leveraging serverless, but also directs a low-rate bursty portion of the demand to serverless where it would be less costly than spinning up new VMs. We evaluate LIBRA on real traces in a simulated environment as well as on the AWS commercial cloud. Our results show that LIBRA outperforms other resource-provisioning policies, including a recent hybrid approach - LIBRA achieves more than 85% reduction in SLA violations and up to 53% cost savings.
Chiroptical properties of bioactive molecules: sensitivity to conformation and solvation
Creators: name: Tedesco, Daniele <1984>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: CHIM/08 Chimica farmaceutica

description: Chiroptical spectroscopies play a fundamental role in pharmaceutical analysis for the stereochemical characterisation of bioactive molecules, due to the close relationship between chirality and optical activity and the increasing evidence of stereoselectivity in the pharmacological and toxicological profiles of chiral drugs. The correlation between chiroptical properties and absolute stereochemistry, however, requires the development of accurate and reliable theoretical models. The present thesis will report the application of theoretical chiroptical spectroscopies in the field of drug analysis, with particular emphasis on the huge
influence of conformational flexibility and solvation on chiroptical properties and on the main computational strategies available to describe their effects by means of electronic circular dichroism (ECD) spectroscopy and time-dependent density functional theory (TD-DFT) calculations.

The combination of experimental chiroptical spectroscopies with state-of-the-art computational methods proved to be very efficient at predicting the absolute configuration of a wide range of bioactive molecules (fluorinated 2-arylpropionic acids, β-lactam derivatives, difenoconazole, fenoterol, mycoleptones, austdiol). The results obtained for the investigated systems showed that great care must be taken in describing the molecular system in the most accurate fashion, since chiroptical properties are very sensitive to small electronic and conformational perturbations. In the future, the improvement of theoretical models and methods, such as ab initio molecular dynamics, will benefit pharmaceutical analysis in the investigation of non-trivial effects on the chiroptical properties of solvated systems and in the characterisation of the stereochemistry of complex chiral drugs.
GCB_Supplementary Data
Creators: name: zhang, lei
Publisher: name: figshare
Year: 2021
Subjects: subject: 69902 Global Change Biology
subject: FOS: Biological sciences
subject: 70504 Forestry Management and Environment
subject: FOS: Agriculture, forestry and fisheries
subject: 70599 Forestry Sciences not elsewhere classified

description: Supplementary Information for GCB journal
Fringe tracking and spatial filtering: phase jumps and dropouts
Creators: name: Buscher, David F.
name: Young, John S.
name: Baron, Fabien
name: Haniff, Christopher A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Fringe tracking in interferometers is typically analyzed with the implicit assumption that there is a single phase associated with each telescope in the array. If the telescopes have apertures significantly larger than r0 and only partial adaptive optics correction, then the phase measured by a fringe sensor may differ significantly from the "piston" component of the aperture phase. In some cases, speckle noise will cause "branch points" in the measured phase as a function of time, causing large and sudden jumps in the phase. We present simulations showing these effects in order to understand their implications for the design of fringe tracking algorithms.
description: 9 pages, to be published in Proc. SPIE conference 7013 "Optical and Infrared Interferometry", Schoeller, Danchi, and Delplancke (eds.)
Superconducting diode effect via conformal-mapped nanoholes
Creators: name: Lyu, Yang-Yang
name: Jiang, Ji
name: Wang, Yong-Lei
name: Xiao, Zhi-Li
name: Dong, Sining
name: Chen, Qing-Hu
name: Milošević, Milorad V.
name: Wang, Huabing
name: Divan, Ralu
name: Pearson, John E.
name: Wu, Peiheng
name: Peeters, Francois M.
name: Kwok, Wai-Kwong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: A superconducting diode is an electronic device that conducts supercurrent and exhibits zero resistance primarily for one direction of applied current. Such a dissipationless diode is a desirable unit for constructing electronic circuits with ultralow power consumption. However, realizing a superconducting diode is fundamentally and technologically challenging, as it usually requires a material structure without a centre of inversion, which is scarce among superconducting materials. Here, we demonstrate a superconducting diode achieved in a conventional superconducting film patterned with a conformal array of nanoscale holes, which breaks the spatial inversion symmetry. We showcase the superconducting diode effect through switchable and reversible rectification signals, which can be three orders of magnitude larger than that from a flux-quantum diode. The introduction of conformal potential landscapes for creating a superconducting diode is thereby proven as a convenient, tunable, yet vastly advantageous tool for superconducting electronics. This could be readily applicable to any superconducting materials, including cuprates and iron-based superconductors that have higher transition temperatures and are desirable in device applications.
description: 25 pages, 4 figures
GCB_Data available.rar
Creators: name: zhang, lei
Publisher: name: figshare
Year: 2021
Subjects: subject: 69902 Global Change Biology
subject: FOS: Biological sciences
subject: 70504 Forestry Management and Environment
subject: FOS: Agriculture, forestry and fisheries
subject: 70599 Forestry Sciences not elsewhere classified

description: Supplementary Information for GCB jounral
Nilpotent noncommutativity and renormalization
Creators: name: Fresneda, R.
name: Gitman, D. M.
name: Vassilevich, D. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze renormalizability properties of noncommutative (NC) theories with a bifermionic NC parameter. We introduce a new 4-dimensional scalar field model which is renormalizable at all orders of the loop expansion. We show that this model has an infrared stable fixed point (at the one-loop level). We check that the NC QED (which is one-loop renormalizable with usual NC parameter) remains renormalizable when the NC parameter is bifermionic, at least to the extent of one-loop diagrams with external photon legs. Our general conclusion is that bifermionic noncommutativity improves renormalizablility properties of NC theories.
description: 5 figures, a reference added
Effective one-dimensional dynamics of elongated Bose-Einstein condensates
Creators: name: Mateo, A. Muñoz
name: Delgado, V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: By using a variational approach in combination with the adiabatic approximation we derive a new effective 1D equation of motion for the axial dynamics of elongated condensates. For condensates with vorticity $|q|=0$ or 1, this equation coincides with our previous proposal [A. Muñoz Mateo and V. Delgado, Phys. Rev. A \textbf{77}, 013617 (2008)]. We also rederive the nonpolynomial Schrödinger equation (NPSE) in terms of the adiabatic approximation. This provides a unified treatment for obtaining the different effective equations and allows appreciating clearly the differences and similarities between the various proposals. We also obtain an expression for the axial healing length of cigar-shaped condensates and show that, in the local density approximation and in units of the axial oscillator length, it coincides with the inverse of the condensate axial half-length. From this result it immediately follows the necessary condition for the validity of the local density approximation. Finally, we obtain analytical formulas that give the frequency of the axial breathing mode with accuracy better than 1%. These formulas can be relevant from an experimental point of view since they can be expressed in terms only of the axial half-length and remain valid in the crossover between the Thomas-Fermi and the quasi-1D mean-field regimes. We have corroborated the validity of our results by numerically solving the full 3D Gross-Pitaevskii equation.
description: Final version published in Annals of Physics; 10 pages, 5 figures
Broken-Symmetry States of Dirac Fermions in Graphene with A Partially Filled High Landau Level
Creators: name: Wang, Hao
name: Sheng, D. N.
name: Sheng, L.
name: Haldane, F. D. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on numerical study of the Dirac fermions in partially filled N=3 Landau level (LL) in graphene. At half-filling, the equal-time density-density correlation function displays sharp peaks at nonzero wavevectors $\pm {\bf q^{*}}$. Finite-size scaling shows that the peak value grows with electron number and diverges in the thermodynamic limit, which suggests an instability toward a charge density wave. A symmetry broken stripe phase is formed at large system size limit, which is robust against purturbation from disorder scattering. Such a quantum phase is experimentally observable through transport measurements. Associated with the special wavefunctions of the Dirac LL, both stripe and bubble phases become possible candidates for the ground state of the Dirac fermions in graphene with lower filling factors in the N=3 LL.
description: Contains are slightly changed. Journal reference and DOI are added
Development of English song within the musical establishment of Vauxhall Gardens, 1745-1784
Creators: name: Borschel, Audrey Leonard
Publisher: name: University of British Columbia
Year: 2010

description: This document provides a brief history of Vauxhall Gardens and an overview of its musical achievements under the proprietorship of Jonathan Tyers and his sons during the 1745-1784 period when Thomas Arne (1710-1778) and James Hook (1746-1827) served as music directors. Vauxhall Gardens provided an extraordinary environment for the development and nurturing of solo songs in the eighteenth century. Here the native British composers' talents were encouraged and displayed to capacity audiences of patrons who often came from privileged ranks of society. The largely anonymous poems of the songs were based on classical, pastoral, patriotic, Caledonian, drinking or hunting themes. The songs ranged from simple, folk-like ballads in binary structures to phenomenally virtuosic pieces which often included several sections. During the early years of vocal performances at Vauxhall (c. 1745-1760), the emphasis was on delivery of texts, sung to easily remembered melodies with little ornamentation and few florid passages. However, the coloratura style of Italian opera was assimilated and anglicized by Thomas Arne, his contemporaries, and later by James Hook. In the 1770's and 1780's, composers continued to refine all the forms and styles that had been popular since the 1740's; this developmental process was mainly technical. Vauxhall songs were composed with orchestral accompaniment and incorporated the techniques of the Mannheim school. All the melodic, rhythmic, harmonic and orchestral devices of the era were available to the British composers, and they borrowed freely from each other and from the continental masters. While certain forms evolved more clearly in the 1770's and 1780's, such as the rondo, major changes were not observed in the poetry. Vocal music at Vauxhall Gardens occupies a position in history as a steppingstone toward mass culture. Vauxhall ballads were printed in annual collections and single sheets by a vigorous publishing industry. When the Industrial Revolution caused the middle class to splinter into further groupings toward the end of the eighteenth century, the new lower middle class shunned the artistic pleasures of the upper classes and developed its own entertainments, which resulted in a permanent separation of popular and classical musical cultures, as well as the decline of Vauxhall Gardens
GravityCam : A future wide-field high-resolution imager for the NTT
Creators: name: Snodgrass, Colin
Publisher: name: Zenodo
Year: 2019

description: GravityCam is a new instrument proposed for the NTT, to perform wide-field high-
resolution imaging, which would complement the SOXS spectrograph and enable unique surveys. It
will be capable of delivering significantly sharper images from the ground than is normally possible
without adaptive optics. Images will be acquired at high speed and aligned before they are
combined to yield a 2.5–3-fold improvement in image resolution, giving PSFs with FWHM 0.2-0.3" in
typical conditions at La Silla. Science drivers include surveys of planets and satellites down to Lunar
mass across the Milky Way via microlensing, weak shear studies of dark matter distribution in
distant clusters of galaxies, and multiwavelength follow-ups of background sources that are strongly
lensed by galaxy clusters. High-speed photometric data will also be useful for asteroseismology
studies, to monitor flaring in accreting compact objects, and to study the Kuiper belt and possibly
the Oort cloud via stellar occultations.
Five loop renormalization of the Wess-Zumino model
Creators: name: Gracey, J. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We renormalize the Wess-Zumino model at five loops in both the minimal subtraction (MSbar) and momentum subtraction (MOM) schemes. The calculation is carried out automatically using a routine that performs the D-algebra. Generalizations of the model to include $O(N)$ symmetry as well as the case with real and complex tensor couplings are also considered. We confirm that the emergent SU(3) symmetry of six dimensional O(N) phi^3 theory is also a property of the tensor O(N) model. With the new loop order precision we compute critical exponents in the epsilon expansion for several of these generalizations as well as the XYZ model in order to compare with conformal bootstrap estimates in three dimensions. For example at five loops our estimate for the correction to scaling exponent is in very good agreement for the Wess-Zumino model which equates to the emergent supersymmetric fixed point of the Gross-Neveu-Yukawa model. We also compute the rational number that is part of the six loop MSbar beta-function.
description: 61 latex pages, 15 figures, 9 tables, anc directory contains txt file with electronic version of renormalization constants and renormalization group functions
ปัจจัยที่มีอิทธิพลต่อประสิทธิผลในการนำนโยบายวิสาหกิจเริ่มต้นไปปฏิบัติ พื้นที่ศูนย์ส่งเสริมอุตสาหกรรมภาคที่ 4
Creators: name: ปัณณวิชญ์ นาคนทรง
Publisher: name: College of Politics and Governance (COPAG), Mahasarakham University
Year: 2021
Subjects: Startup
Policy implementation
Effectiveness

description: Journal of Politics and Governance, 11, 3, 66-86
The galactic very metal-poor stars : from La Silla to Paranal
Creators: name: Spite, Monique
Publisher: name: Zenodo
Year: 2019

description: The search for the most galactic metal-poor stars began soon after the publication of the fundamental paper of Burbidge et al. (1957):  the elements are synthesised little by little in the stars, and thus the most metal-poor galactic stars are (at least in a first approximation) the oldest ones.
The abundances of the elements tell us the story of the evolution of our Galaxy. I will try to recall the contribution of the La Silla instruments to the detection and the study of the primitive metal-poor stars, and I will rapidly review what we know today about  the early phases of the Galactic evolution.
การจัดการภัยพิบัติเชิงบูรณาการ: วิเคราะห์บทบาทกรมป้องกันและบรรเทาสาธารณภัย กระทรวงมหาดไทย
Creators: name: ทศพล อัครพงษ์ไพบูลย์
Publisher: name: College of Politics and Governance (COPAG), Mahasarakham University
Year: 2021
Subjects: Integrated management
Disaster management
Methods and techniques for integration

description: Journal of Politics and Governance, 11, 3, 87-98
ขบวนการเคลื่อนไหวทางสังคมของกลุ่มครูในด้านการศึกษา กรณีศึกษากลุ่มครูในภาคตะวันออกเฉียงเหนือ
Creators: name: คงฤทธิ์ แข็งแรง
Publisher: name: College of Politics and Governance (COPAG), Mahasarakham University
Year: 2021
Subjects: Social movement
Teacher Group
Education

description: Journal of Politics and Governance, 11, 3, 99-121
Hyperbolic subdiffusive impedance
Creators: name: Kosztolowicz, Tadeusz
name: Lewandowska, Katarzyna D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We use the hyperbolic subdiffusion equation with fractional time derivatives (the generalized Cattaneo equation) to study the transport process of electrolytes in media where subdiffusion occurs. In this model the flux is delayed in a non-zero time with respect to the concentration gradient. In particular, we obtain the formula of electrochemical subdiffusive impedance of a spatially limited sample in the limit of large and of small pulsation of the electric field. The boundary condition at the external wall of the sample are taken in the general form as a linear combination of subdiffusive flux and concentration of the transported particles. We also discuss the influence of the equation parameters (the subdiffusion parameter and the delay time) on the Nyquist impedance plots.
description: 10 pages, 5 figures
Supersymmetric Models with Higher Dimensional Operators
Creators: name: Antoniadis, I.
name: Dudas, E.
name: Ghilencea, D. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In 4D renormalisable theories, integrating out massive states generates in the low energy effective action higher dimensional operators (derivative or otherwise). Using a superfield language it is shown that a 4D N=1 supersymmetric theory with higher derivative operators in either the Kahler or the superpotential part of the Lagrangian and with an otherwise arbitrary superpotential, is equivalent to a 4D N=1 theory of second order (i.e. without higher derivatives) with additional superfields and renormalised interactions. We provide examples where a free theory with trivial supersymmetry breaking provided by a linear superpotential becomes, in the presence of higher derivatives terms and in the second order version, a non-trivial interactive one with spontaneous supersymmetry breaking. The couplings of the equivalent theory acquire a threshold correction through their dependence on the scale of the higher dimensional operator(s). The scalar potential in the second order theory is not necessarily positive definite, and one can in principle have a vanishing potential with broken supersymmetry. We provide an application to MSSM and argue that at tree-level and for a mass scale associated to a higher derivative term in the TeV range, the Higgs mass can be lifted above the current experimental limits.
description: 36 pages; some clarifications and references added
From the NTT to the TNG
Creators: name: Barbieri, Cesare
name: Ragazzoni, Roberto
Publisher: name: Zenodo
Year: 2019

description: In early 1988, the Italian National Council for Astronomical Research issued a Call for Proposals finalized to the construction of a 4m class telescope. Our response to the Call used several key concepts of the ESO NTT, and was approved in October 1988. The telescope was named Telescopio Nazionale Galileo (TNG). Among the common NTT-TNG elements, we recall the diameter and F/ of the primary (3.5m and F/11), the Alt-Az mount with two Nasmyth foci, the active optics, the overall shape and the rotation concept of the dome. Differences will also be exposed. The collaboration with the NTT project was extremely friendly throughout all phases of the design and construction of the TNG, in particular for optics. Our deepest gratitude to M.Tarenghi, G. Ihle, F. Franza and L. Noethe. We keep the fondest memory of R. Wilson, a source of inspiration for us all.
Solid-solid transition of the size-polydisperse hard-sphere system
Creators: name: Yang, Mingcheng
name: Ma, Hongru
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The solid-solid coexistence of a polydisperse hard sphere system is studied by using the Monte Carlo simulation. The results show that for large enough polydispersity the solid-solid coexistence state is more stable than the single-phase solid. The two coexisting solids have different composition distributions but the same crystal structure. Moreover, there is evidence that the solid-solid transition terminates in a critical point as in the case of the fluid-fluid transition.
description: 9 pages, 4 figures
Decoherence in adiabatic quantum computation
Creators: name: Amin, M. H. S.
name: Averin, Dmitri V.
name: Nesteroff, James A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have studied the decoherence properties of adiabatic quantum computation (AQC) in the presence of in general non-Markovian, e.g., low-frequency, noise. The developed description of the incoherent Landau-Zener transitions shows that the global AQC maintains its properties even for decoherence larger than the minimum gap at the anticrossing of the two lowest energy levels. The more efficient local AQC, however, does not improve scaling of the computation time with the number of qubits $n$ as in the decoherence-free case. The scaling improvement requires phase coherence throughout the computation, limiting the computation time and the problem size n.
description: 4 pages, 2 figures, published version
Nonadiabatic evolution and thermodynamics of a time-dependent open quantum system
Creators: name: Wang, Dan
name: Xu, Dazhi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the dynamic evolution and thermodynamic process of a driven quantum system immersed in a finite-temperature heat bath. A Born-Markovian quantum master equation is formally derived for the time-dependent system with discrete energy levels. This quantum master equation can be applied to situations with a broad range of driving speeds and bath temperatures and thus be used to study the finite-time quantum thermodynamics even when nonadiabatic transition and dissipation coexist. The dissipative Landau-Zener model is analyzed as an example. The population evolution and transition probability of the model reveal the importance of the competition between driving and dissipation beyond the adiabatic regime. Moreover, local maximums of irreversible entropy production occur at intermediate sweep velocity and finite temperature, which the low-dissipation model cannot describe.
description: 11 pages, 7 figures
การพัฒนาสมรรถนะของอาจารย์หลักสูตรรัฐประศาสนศาสตรบัณฑิตของมหาวิทยาลัยราชภัฏกลุ่มภาคตะวันออกเฉียงเหนือเพื่อเตรียมความพร้อมสู่นโยบายประเทศไทย 4.0
Creators: name: รชต อุบลเลิศ
Publisher: name: College of Politics and Governance (COPAG), Mahasarakham University
Year: 2021
Subjects: Develop
Competency
Lecturer
Rajabhat
Thailand 4.0

description: Journal of Politics and Governance, 11, 3, 122-136
ลักษณะบุคลิกภาพนักการเมืองท้องถิ่นที่มีอิทธิพลต่อรูปแบบการมีส่วนร่วมทางการเมืองของกลุ่มคนเจนเนอเรชั่น X และ Y
Creators: name: วีระศักดิ์ จินารัตน์
Publisher: name: College of Politics and Governance (COPAG), Mahasarakham University
Year: 2021
Subjects: Personality Traits of Politicians
Political Participation
Generation X and Y

description: Journal of Politics and Governance, 11, 3, 137-160
Modified Brans-Dicke theory of gravity from five-dimensional vacuum
Creators: name: Aguilar, Jose Edgar Madriz
name: Romero, Carlos
name: Barros, Adriano
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate, in the context of five-dimensional (5D) Brans-Dicke theory of gravity, the idea that macroscopic matter configurations can be generated from pure vacuum in five dimensions, an approach first proposed in the framework of general relativity. We show that the 5D Brans-Dicke vacuum equations when reduced to four dimensions lead to a modified version of Brans-Dicke theory in four dimensions (4D). As an application of the formalism, we obtain two five-dimensional extensions of four-dimensional O'Hanlon and Tupper vacuum solution and show that they lead two different cosmological scenarios in 4D.
description: 9 pages
สถานการณ์การเล่นการพนันของเยาวชนในพื้นที่ชายแดนแม่สอด - เมียวดี
Creators: name: วสันต์ ปวนปันวงศ์
Publisher: name: College of Politics and Governance (COPAG), Mahasarakham University
Year: 2021
Subjects: Gambling
Youth
Mae Sod - Myawaddy border

description: Journal of Politics and Governance, 11, 3, 161-183
การจัดการขยะในชุมชนเมือง: อำนาจและการมีส่วนร่วมของประชาชน
Creators: name: อรอุมา รัตนพล
Publisher: name: College of Politics and Governance (COPAG), Mahasarakham University
Year: 2021
Subjects: Waste Management
Urban Community
People Power
People Participation

description: Journal of Politics and Governance, 11, 3, 184-197
A Nearby Old Halo White Dwarf Candidate from the Sloan Digital Sky Survey
Creators: name: Hall, Patrick B.
name: Kowalski, Piotr M.
name: Harris, Hugh C.
name: Awal, Akshay
name: Leggett, S. K.
name: Kilic, Mukremin
name: Anderson, Scott F.
name: Gates, Evalyn
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of a nearby, old, halo white dwarf candidate from the Sloan Digital Sky Survey. SDSS J110217.48+411315.4 has a proper motion of 1.75 arcsec/year and redder optical colors than all other known featureless (type DC) white dwarfs. We present SDSS imaging and spectroscopy of this object, along with near-infrared photometry obtained at the United Kingdom Infra-Red Telescope. Fitting its photometry with up-to-date model atmospheres, we find that its overall spectral energy distribution is fit reasonably well with a pure hydrogen composition and T_eff~3800 K (assuming log g=8). That temperature and gravity would place this white dwarf at 35 pc from the Sun with a tangential velocity of 290 km/s and space velocities consistent with halo membership; furthermore, its combined main sequence and white dwarf cooling age would be ~11 Gyr. However, if this object is a massive white dwarf, it could be a younger object with a thick disk origin. Whatever its origin, the optical colors of this object are redder than predicted by any current pure hydrogen, pure helium or mixed hydrogen-helium atmospheric model, indicating that there remain problems in our understanding of the complicated physics of the dense atmospheres of cool white dwarfs.
description: AJ in press. 10 pages emulateapj format; 5 figures
Free zero-range processes on networks
Creators: name: Bogacz, L.
name: Burda, Z.
name: Janke, W.
name: Waclaw, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A free zero-range process (FRZP) is a simple stochastic process describing the dynamics of a gas of particles hopping between neighboring nodes of a network. We discuss three different cases of increasing complexity: (a) FZRP on a rigid geometry where the network is fixed during the process, (b) FZRP on a random graph chosen from a given ensemble of networks, (c) FZRP on a dynamical network whose topology continuously changes during the process in a way which depends on the current distribution of particles. The case (a) provides a very simple realization of the phenomenon of condensation which manifests as the appearance of a condensate of particles on the node with maximal degree. The case (b) is very interesting since the averaging over typical ensembles of graphs acts as a kind of homogenization of the system which makes all nodes identical from the point of view of the FZRP. In the case (c), the distribution of particles and the dynamics of network are coupled to each other. The strength of this coupling depends on the ratio of two time scales: for changes of the topology and of the FZRP. We will discuss a specific example of that type of interaction and show that it leads to an interesting phase diagram.
description: 11 pages, 4 figures, to appear in Proceedings of SPIE Symposium "Fluctuations and Noise 2007", Florence, 20-24 May 2007
ESO-La Silla/NEON School publishes paper on the peculiar globular cluster NGC3201
Creators: name: Dias, Bruno
Publisher: name: Zenodo
Year: 2019

description: The group lead by me discovered that NGC 3201 has characteristics that set it
outside the current twofold classification scheme for Galactic globular clusters (GCs). Most GCs
are mono-metallic and show light-element abundance variations (e.g., Na-O and C-N anti-
correlations); but a minority of clusters also present variations in Fe correlating with s-process
element and C+N+O abundances, and they possess multiple C-N sequences. These anomalous
GCs also have a broad sub-giant branch (SGB) and follow the same mass-size relation as dwarf
galaxies possibly evolving into GCs. We now revealed that NGC 3201 belongs to neither group. It
has multiple C-N sequences, but no broad SGB, no strong evidence of a Fe-spread, and it does not
follow the mass-size relation. The four students went through the whole process from pre-image
and MOS with EFOSC2 finishing with a publication on A&A. This recent achievement represents a
good use of La Silla facilities involving training and science impact.
Tree-structured regression and the differentiation of integrals
Creators: name: Olshen, Richard A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 26B05, 28A15, 62G08, 62C12 (Primary)

description: This paper provides answers to questions regarding the almost sure limiting behavior of rooted, binary tree-structured rules for regression. Examples show that questions raised by Gordon and Olshen in 1984 have negative answers. For these examples of regression functions and sequences of their associated binary tree-structured approximations, for all regression functions except those in a set of the first category, almost sure consistency fails dramatically on events of full probability. One consequence is that almost sure consistency of binary tree-structured rules such as CART requires conditions beyond requiring that (1) the regression function be in ${\mathcal {L}}^1$, (2) partitions of a Euclidean feature space be into polytopes with sides parallel to coordinate axes, (3) the mesh of the partitions becomes arbitrarily fine almost surely and (4) the empirical learning sample content of each polytope be ``large enough.'' The material in this paper includes the solution to a problem raised by Dudley in discussions. The main results have a corollary regarding the lack of almost sure consistency of certain Bayes-risk consistent rules for classification.
description: Published at http://dx.doi.org/10.1214/009053606000001000 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Quantum Simulations of Classical Annealing Processes
Creators: name: Somma, R. D.
name: Boixo, S.
name: Barnum, H.
name: Knill, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We describe a quantum algorithm that solves combinatorial optimization problems by quantum simulation of a classical simulated annealing process. Our algorithm exploits quantum walks and the quantum Zeno effect induced by evolution randomization. It requires order $1/\sqrtδ$ steps to find an optimal solution with bounded error probability, where $δ$ is the minimum spectral gap of the stochastic matrices used in the classical annealing process. This is a quadratic improvement over the order $1/δ$ steps required by the latter.
description: 4 pages - 1 figure. This work differs from arXiv:0712.1008 in that the quantum Zeno effect is implemented via randomization in the evolution
Probing many-body systems near spectral degeneracies
Creators: name: Ziegler, Klaus
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The diagonal elements of the time correlation matrix are used to probe closed quantum systems that are measured at random times. This enables us to extract two distinct parts of the quantum evolution, a recurrent part and an exponentially decaying part. This separation is strongly affected when spectral degeneracies occur, for instance, in the presence of spontaneous symmetry breaking. Moreover, the slowest decay rate is determined by the smallest energy level spacing, and this decay rate diverges at the spectral degeneracies. Probing the quantum evolution with the diagonal elements of the time correlation matrix is discussed as a general concept and tested in the case of a bosonic Josephson junction. It reveals for the latter characteristic properties at the transition to Hilbert-space localization.
description: 9 pages, 4 figures
Calabi-Yau CFTs and Random Matrices
Creators: name: Afkhami-Jeddi, Nima
name: Ashmore, Anthony
name: Cordova, Clay
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Using numerical methods for finding Ricci-flat metrics, we explore the spectrum of local operators in two-dimensional conformal field theories defined by sigma models on Calabi-Yau targets at large volume. Focusing on the examples of K3 and the quintic, we show that the spectrum, averaged over a region in complex structure moduli space, possesses the same statistical properties as the Gaussian orthogonal ensemble of random matrix theory.
description: 37 pages, 7 figures; v2: typos corrected, added discussion on quantum chaos, accepted by JHEP
MacMahon Partition Analysis: A discrete approach to broken stick problems
Creators: name: Verreault, William
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A17 (Primary) 05A15, 60C05 (Secondary)

description: We propose a discrete approach to solve problems on forming polygons from broken sticks, which is akin to counting polygons with sides of integer length subject to certain Diophantine inequalities. Namely, we use MacMahon's Partition Analysis to obtain a generating function for the size of the set of segments of a broken stick subject to these inequalities. In particular, we use this approach to show that for $n\geq k\geq 3$, the probability that a $k$-gon cannot be formed from a stick broken into $n$ parts is given by $n!$ over a product of linear combinations of partial sums of generalized Fibonacci numbers, a problem which proved to be very hard to generalize in the past.
description: 12 pages. Typos corrected and references updated
The NeXT Mission
Creators: name: Takahashi, T.
name: Kelley, R.
name: Mitsuda, K.
name: Kunieda, H.
name: Petre, R.
name: White, N.
name: Dotani, T.
name: Fujimoto, R.
name: Fukazawa, Y.
name: Hayashida, K.
name: Ishida, M.
name: Ishisaki, Y.
name: Kokubun, M.
name: Makishima, K.
name: Koyama, K.
name: Madejski, G. M.
name: Mori, K.
name: Mushotzky, R.
name: Nakazawa, K.
name: Ogasaka, Y.
name: Ohashi, T.
name: Ozaki, M.
name: Tajima, H.
name: Tashiro, M.
name: Terada, Y.
name: Tsunemi, H.
name: Tsuru, T. G.
name: Ueda, Y.
name: Yamasaki, N.
name: Watanabe, S.
name: team, the NeXT
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The NeXT (New exploration X-ray Telescope), the new Japanese X-ray Astronomy Satellite following Suzaku, is an international X-ray mission which is currently planed for launch in 2013. NeXT is a combination of wide band X-ray spectroscopy (3 - 80 keV) provided by multi-layer coating, focusing hard X-ray mirrors and hard X-ray imaging detectors, and high energy-resolution soft X-ray spectroscopy (0.3 - 10 keV) provided by thin-foil X-ray optics and a micro-calorimeter array. The mission will also carry an X-ray CCD camera as a focal plane detector for a soft X-ray telescope and a non-focusing soft gamma-ray detector. With these instruments, NeXT covers very wide energy range from 0.3 keV to 600 keV. The micro-calorimeter system will be developed by international collaboration lead by ISAS/JAXA and NASA. The simultaneous broad bandpass, coupled with high spectral resolution of Delta E ~ 7 eV by the micro-calorimeter will enable a wide variety of important science themes to be pursued.
description: 14 pages, 10 figures, Proceedings of the SPIE meeting, "Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray 2008", Marseille (2008)
Dimensional Duality
Creators: name: Green, Daniel
name: Lawrence, Albion
name: McGreevy, John
name: Morrison, David R.
name: Silverstein, Eva
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that string theory on a compact negatively curved manifold, preserving a U(1)^{b_1} winding symmetry, grows at least b_1 new effective dimensions as the space shrinks. The winding currents yield a "D-dual" description of a Riemann surface of genus h in terms of its 2h dimensional Jacobian torus, perturbed by a closed string tachyon arising as a potential energy term in the worldsheet sigma model. D-branes on such negatively curved manifolds also reveal this structure, with a classical moduli space consisting of a b_1-torus. In particular, we present an AdS/CFT system which offers a non-perturbative formulation of such supercritical backgrounds. Finally, we discuss generalizations of this new string duality.
description: 25 pages, harvmac. v2: fixed typo. v3: fixed typos and added refs