cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Performance of a Prototype CMS Hadron Barrel Calorimeter in a Test Beam
Creators: name: Bodek, Arie
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report on the performance of a prototype CMS Hadron Barrel Calorimeter (HCAL) module in a test beam. The prototype sampling calorimeter used copper absorber plates and scintillator tiles with wavelength shifting fibers for readout. Placing a lead tungstate crystal electromagnetic calorimeter in front of HCAL affects the linearity and energy resolution of the combined system to hadrons. The data are used to optimize the choice of total absorber depth, sampling frequency, and longitudinal readout segmentation.
description: 3 pages, 3 figures, contributed paper to the IEEE Conference, Toronto, Nov. 1998
Counting 4 pi 's in Strongly Coupled Supersymmetry
Creators: name: Cohen, Andrew G.
name: Kaplan, David B.
name: Nelson, Ann E.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We extend the "naive dimensional analysis" arguments used in QCD for estimating the strengths of operators in chiral Lagrangians to strongly coupled supersymmetric theories. In particular, we show how to count factors of 4 pi ---an inexact science, but nevertheless a useful art when such theories are used to model real particle physics.
description: 11 pages, latex
Transmission Through Carbon Nanotubes With Polyhedral Caps
Creators: name: Anantram, M. P.
name: Govindan, T. R.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We study electron transport between capped carbon nanotubes and a substrate, and relate the transmission probability to the local density of states in the cap. Our results show that the transmission probability mimics the behavior of the density of states at all energies except those that correspond to localized states in the cap. Close proximity of a substrate causes hybridization of the localized state. As a result, new transmission paths open from the substrate to nanotube continuum states via the localized states in the cap. Interference between various transmission paths gives rise to antiresonances in the transmission probability, with the minimum transmission equal to zero at energies of the localized states. Defects in the nanotube that are placed close to the cap cause resonances in the transmission probability, instead of antiresonances, near the localized energy levels. Depending on the spatial position of defects, these resonant states are capable of carrying a large current. These results are relevant to carbon nanotube based studies of molecular electronics and probe tip applications.
Sum rules for $CP$ asymmetries of charmed baryon decays in the $SU(3)_F$ limit
Creators: name: Wang, Di
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by the recent LHCb observation of $CP$ violation in charm, we study $CP$ violation in the charmed baryon decays. A simple method to search for the $CP$ violation relations in the flavor $SU(3)$ limit, which is associated with a complete interchange of $d$ and $s$ quarks, is proposed. With this method, hundreds of $CP$ violation sum rules in the doubly and singly charmed baryon decays can be found. As examples, the $CP$ violation sum rules in two-body charmed baryon decays are presented. Some of the $CP$ violation sum rules could help the experiment to find better observables. As byproducts, the branching fraction of $Ξ^+_c\to pK^-π^+$ is predicted to be $(1.7\pm 0.5)\%$ in the $U$-spin limit and the fragmentation-fraction ratio is determined as $f_{Ξ_b}/f_{Λ_b}=0.065\pm 0.020$ using the LHCb data.
description: 22 pages, published version
Sciocorini Amyot & Serville 1843
Creators: name: Matocq, Armand
name: Azar, Dany
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae

description: Tribe Sciocorini Amyot & Serville, 1843   — Menacarus dohrnianus (Mulsant & Rey, 1866).
Derjanschi & Péricart (2005); Rider (2006); Aukema (2018).
 — Sciocoris (Parasciocoris) convexiusculus Puton, 1874.
 Byblos Port, Byblos = ليب÷, [Caza Byblos], 5/ 6-V-2005; Baalbek = كبل•ب, [Caza Baalbek], 1-V-2005, A. Matocq leg. (AMPC) on Ononis; Bhannes Hospital, Bhannes = سḷ>ب, [Caza Matn, 1-V-2005, A. Matocq leg. (AMPC) Rider (2006); Aukema (2018).
 — Sciocoris (Sciocoris) distinctus Fieber, 1851.
 (Puton, 1881: Beirut = =وريب, [Caza Beirut] as Sciocoris diưinctus)
 * Sciocoris (Sciocoris) ochraceus Fieber, 1861.
Amchit = =يش*Ρ, [Caza Byblos], 2-V-2005, A. Matocq leg. (AMPC)
 ? Sciocoris (Sciocoris) pentheri Wagner, 1953?.
 ♀ Ehden (Reserve), Ehden = ن›ªا, [Caza Zgharta], 22-V-2005, C. Abed leg., A. Matocq det. (AMPC). Note: doubtful identification, this species is only known by its female type from Albania.
description: Published as part of Matocq, Armand & Azar, Dany, 2023, Preliminary inventory of terrestrial Heteroptera from Lebanon (Hemiptera: Leptopodomorpha, Cimicomorpha and Pentatomomorpha), pp. 1-26 in Zootaxa 5230 (1) on page 13, DOI: 10.11646/zootaxa.5230.1.1, http://zenodo.org/record/7550504
Supplementary material from Sexual selection and ageing: interplay between pre- and post-copulatory traits senescence in the guppy
Creators: name: Gasparini, Clelia
name: Devigili, Alessandro
name: Pilastro, Andrea
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences

description: Traits associated with mating and fertilization success are expected to senesce with age, but limited information is available on their relative rates of senescence. In polyandrous species, male reproductive fitness depends on both mating and fertilization success. Since successful mating is a prerequisite for post-copulatory sexual selection, ejaculate traits are expected to senesce faster than pre-copulatory traits, as pre-copulatory sexual selection is often deemed to be stronger than post-copulatory sexual selection. This pattern has generally been found in the few empirical studies conducted so far. We tested this prediction in the guppy (Poecilia reticulata), a livebearing fish characterized by intense sperm competition, by comparing the expression of male sexual traits at two ages (four and nine months). Contrary to prediction, we found that post-copulatory traits senesced at a significantly slower rate than pre-copulatory traits. We also looked at whether early investment in those sexual traits affects longevity, and the interaction between sperm age (duration of sperm storage inside the male) and male age. Our results suggest that the relative senescence rate of pre- and post-copulatory sexual traits may vary among species with different mating systems and ecology.
Vibrational Spectra of Defects in Silicon: An Orbital Radii Approach
Creators: name: Verma, H. C.
name: John, George C.
name: Singh, Vijay A.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: A phenomenological approach to the stretching mode vibrational frequencies of defects in semiconductors is proposed. A novel quantum scale is defined in terms of the first principles pseudopotential based orbital radius and the principal quantum number of the element concerned. A universal linear relationship between the Sanderson electronegativity and this quantum scale is established. Next, we show that the stretching mode vibrational frequencies of hydrogen and chlorine in the silicon network scale linearly with this quantum scale. Predictions and identifications of defect environments around the Si-H and Si-Cl are possible. The assignments of vibrational modes in porous silicon are critically examined. We discuss our proposed scale in the context of Mendeleveyan scales in general, and suggest justifications for it. We believe that our approach can be gainfully extended to the vibrational spectra of other semiconductors.
description: Only text included, figures available on request from george@iitk.ernet.in; Phys. Rev. B (to appear)
Testing a hypothesis for the evolution of sex
Creators: name: Orcal, Bora
name: Tuzel, Erkan
name: Sevim, Volkan
name: Jan, Naeem
name: Erzan, Ayse
Publisher: name: arXiv
Year: 2000
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: An asexual set of primitive bacteria is simulated with a bit-string Penna model with a Fermi function for survival. A recent hypothesis by Jan, Stauffer and Moseley on the evolution of sex from asexual cells as a strategy for trying to escape the effects of deleterious mutations is checked. This strategy is found to provide a successful scenario for the evolution of a stable macroscopic sexual population.
description: RevTeX, 9 pages, multicolumn, including 8 figures
Quench Induced Vortices in the Symmetry Broken Phase of Liquid $^4$He
Creators: name: Gill, A. J.
name: Kibble, T. W. B.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Motivated by the study of cosmological phase transitions, our understanding of the formation of topological defects during spontaneous symmetry-breaking and the associated non-equilibrium field theory has recently changed. Experiments have been performed in superfluid $^4$He to test the new ideas involved. In particular, it has been observed that a vortex density is seen immediately after pressure quenches from just below the $λ$ transition. We discuss possible interpretations of these vortices, conclude they are consistent with our ideas of vortex formation and propose a modification of the original experiments.
description: 29 pages, RevTeX with one EPS figure
Methacanthinae Douglas & Scott 1865
Creators: name: Matocq, Armand
name: Azar, Dany
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Berytidae

description: Subfamily METHACANTHINAE Douglas & Scott, 1865   — Metacanthus (Cardopostethus) annulosus (Fieber, 1859). Péricart (1984: Beirut = =وريب, [Caza Beirut]; 2001); Aukema (2018).
description: Published as part of Matocq, Armand & Azar, Dany, 2023, Preliminary inventory of terrestrial Heteroptera from Lebanon (Hemiptera: Leptopodomorpha, Cimicomorpha and Pentatomomorpha), pp. 1-26 in Zootaxa 5230 (1) on page 17, DOI: 10.11646/zootaxa.5230.1.1, http://zenodo.org/record/7550504
Identified Hadron Production and Light Quark Fragmentation in Z0 Decays
Creators: name: Kalelkar, M.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We have measured the differential cross sections for the production of $π^{+}$, $K^{+}$, $K^{0}$, $K^{*0}$, $ϕ$, p, $Λ$ and their corresponding antiparticles in separate samples of flavor-tagged $Z^{0}\to$ light-flavor ($u\bar{u}$, $d\bar{d}$, or $s\bar{s}$), $Z^{0}\to c\bar{c}$ and $Z^{0}\to b\bar{b}$ events. Clear flavor dependences are observed, and the results are compared with the predictions of three fragmentation models. We have also performed a direct measurement of $A_{s}$, the parity-violating coupling of the $Z^{0}$ to strange quarks, by measuring the left-right-forward-backward production asymmetry in polar angle of the tagged $s$ quark. Our preliminary result is $A_{s}$ = $0.82\pm 0.10(stat.)\pm 0.07(syst.)$.
description: 11 pages, 3 figures, to appear in Proceedings of QCD98 Euroconference, Montpellier, France
Fermionic Casimir effect in a field theory model with Lorentz symmetry violation
Creators: name: Cruz, M. B.
name: de Mello, E. R. Bezerra
name: Petrov, A. Yu.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we evaluate the Casimir energy and pressure for a massive fermionic field confined in the region between two parallel plates. In order to implement this confinement we impose the standard MIT bag boundary on the plates for the fermionic field. In this paper we consider a quantum field theory model with a CPT even, aether-like Lorentz symmetry violation. It turns out that the fermionic Casimir energy and pressure depend on the direction of the constant vector that implements the Lorentz symmetry breaking.
description: Version accepted for publication in PRD, metadata corrected
title: Displaying the Past: Guidelines for Outreach Using Archival Collections
Creators: name: Mondt, Laura
name: Oleaga, Rachel
Publisher: name: University of Massachusetts Amherst
Year: 2018
Subjects: subject: Archives and Special Collections Outreach
subject: community college libraries
subject: archival collections
subject: outreach
subject: history
subject: archives
subject: Library and Information Science

description: In the summer of 2017, our community college library had the opportunity to partner with a local historical society to produce an exhibit about the history of the college in the historical society’s welcome center. With no dedicated archivist or outreach librarian, two research and instruction librarians with archives experience from previous employment were tasked with leading and implementing this project with little precedent. Our archive is relatively new, and still in the early stages of development. Most collections are minimally processed and no electronic finding aids exist to aid in search and retrieval efforts. Additionally, with limited display space of our own, archival display materials are limited. In order to design this exhibit, the librarians had to inventory and identify potential archival sources for display, address preservation concerns, obtain display equipment, coordinate installation with the historical society, work with college public relations and plan an opening reception. With future outreach exhibits planned, we wanted to use what we learned in the process to make subsequent outreach exhibits easier to plan and execute. This poster will provide attendees with a list of guidelines to consider when creating an exhibit with an external partner based on what was learned as we worked through the exhibit making process. While the exhibit was an overall success, there were many bumps in the road and lessons learned to share with conference goers. Attendees will walk away with an understanding of pitfalls to avoid as well as recommended best practices for librarians using an exhibit for outreach. This poster presentation will also demonstrate that librarians should not let inexperience or minimally processed collections be a barrier to establishing meaningful community connections.
description: This poster aims to provide attendees with a list of guidelines to consider when using an archival exhibit as a method of outreach, along with fostering a broader discussion of community college libraries, and the promotional value of their small or minimally processed archival collections.
c-axis Josephson Tunneling in Twinned YBCO Crystals
Creators: name: Haslinger, Robert
name: Joynt, Robert
Publisher: name: arXiv
Year: 1999
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Josephson tunneling between YBCO and Pb with the current flowing along the c-axis of the YBCO is persumed to come from an s-wave component of the superconductivity of the YBCO. Experiments on multi-twin samples are not entirely consistent with this hypothesis. The sign change of the s-wave order parameter across the N_T twin boundaries should give cancelations, resulting in a small $(\sqrt{N})$ tunneling current. The actual current is larger than this. We present a theory of this unexpectedly large current based upon a surface effect: disorder-induced supression of the d-wave component at the (001) surface leads to s-wave coherence across the twin boundaries and a non-random tunneling current. We solve the case of an ordered array of d+s and d-s twins, and estimate that the twin size at which s-wave surface coherence occurs is consistent with typical sizes observed in experiments. In this picture, there is a phase difference of $π/2$ between different surfaces of the material. We propose a corner junction experiment to test this picture.
description: 5 pages, 4 eps figures
Optimal quantum subsystem codes in 2-dimensions
Creators: name: Yoder, Theodore J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Given any two classical codes with parameters $[n_1,k,d_1]$ and $[n_2,k,d_2]$, we show how to construct a quantum subsystem code in 2-dimensions with parameters $[[N,K,D]]$ satisfying $N\le 2n_1n_2$, $K=k$, and $D=\min(d_1,d_2)$. These quantum codes are in the class of generalized Bacon-Shor codes introduced by Bravyi. We note that constructions of good classical codes can be used to construct quantum codes that saturate Bravyi's bound $KD=O(N)$ on the code parameters of 2-dimensional subsystem codes. One of these good constructions uses classical expander codes. This construction has the additional advantage of a linear time quantum decoder based on the classical Sipser-Spielman flip decoder. Finally, while the subsystem codes we create do not have asymptotic thresholds, we show how they can be gauge-fixed to certain hypergraph product codes that do.
description: 18 pages, 6 figures
Abnormal Structure of Fermion Mixings in a Seesaw Quark Mass Matrix Model
Creators: name: Koide, Yoshio
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is pointed out that in a seesaw quark mass matrix model which yields a singular enhancement of the top-quark mass, the right-handed fermion-mixing matrix U_R^u for the up-quark sector has a peculiar structure in contrast to the left-handed one U_L^u. As an example of the explicit structures of U_L^u and U_R^u, a case in which the heavy fermion mass matrix M_F is given by a form [(unit matrix)+(rank-one matrix)] is investigated. As a consequence, one finds observable signatures at projected high energy accelerators like the production of a fourth heavy quark family.
description: 17 pages (Latex)
Companion-launched jets and their effect on the dynamics of common envelope interaction simulations
Creators: name: Shiber, Sagiv
name: Iaconi, Roberto
name: De Marco, Orsola
name: Soker, Noam
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We conduct three-dimensional hydrodynamic simulations of the common envelope binary interaction and show that if the companion were to launch jets while interacting with the giant primary star's envelope, the jets would remove a substantial fraction of the envelope's gas. We use the setup and numerical code of an earlier common envelope study that did not include jets, with a 0.88Mo, 83Ro red giant star and a 0.3Mo companion. The assumption is that the companion star accretes mass via an accretion disk that is responsible for launching the jets which, in the simulations, are injected numerically. For the first time we conduct simulations that include jets as well as the gravitational energy released by the inspiraling core-companion system. We find that simulations with jets unbind approximately three times as much envelope mass than identical simulations that do not include jets, though the total fraction of unbound gas remains below 50 per cent for these particular simulations. The jets generate high velocity outflows in the polar directions. The jets also increase the final core-companion orbital separation and lead to a kick velocity of the core-companion binary system. Our results show that, if able to form, jets could play a crucial role in ejecting the envelope and in shaping the outflow.
description: Accepted for publication in MNRAS
Antillicorini Ashlock 1964
Creators: name: Matocq, Armand
name: Azar, Dany
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Rhyparochromidae

description: Tribe Antillicorini Ashlock, 1964   — Homoscelis ruficollis Horváth, 1884. Hollier (2005: Hasroun = نورoe^, [Caza Bcharreh]); Aukema (2018).
description: Published as part of Matocq, Armand & Azar, Dany, 2023, Preliminary inventory of terrestrial Heteroptera from Lebanon (Hemiptera: Leptopodomorpha, Cimicomorpha and Pentatomomorpha), pp. 1-26 in Zootaxa 5230 (1) on page 19, DOI: 10.11646/zootaxa.5230.1.1, http://zenodo.org/record/7550504
Supplemental materials from It sounds like an action potential: unification of electrical, chemical and mechanical aspects of acoustic pulses in lipids
Creators: name: Mussel, Matan
name: Schneider, Matthias F.
Publisher: name: The Royal Society
Year: 2019
Subjects: Biophysics

description: The supplemental materials are intended to provide further physical and mathematical details, including Traueble's model on the electrostatic contribution to the membrane interfacial pressure (section A), and further details on the model equations (section B).
Describing screening in dense ionic fluids with a charge-frustrated Ising model
Creators: name: Ludwig, Nicholas B.
name: Dasbiswas, Kinjal
name: Talapin, Dmitri V.
name: Vaikuntanathan, Suriyanarayanan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Charge correlations in dense ionic fluids give rise to novel effects such as long-range screening and colloidal stabilization which are not predicted by the classic Debye-Huckel theory. We show that a Coulomb or charge-frustrated Ising model, which accounts for both long-range Coulomb and short-range molecular interactions, simply describes some of these ionic correlations. In particular, we obtain at mean field level and in simulations, a non-monotonic dependence of the screening length on the temperature. Using a combination of simulations and mean field theories, we study how the correlations in the various regimes are affected by the strength of the short ranged interactions.
description: 8 pages, 6 figures
Deformation of Small Compressed Droplets
Creators: name: Lacasse, Martin-Daniel
name: Grest, Gary S.
name: Levine, Dov
Publisher: name: arXiv
Year: 1996
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the elastic properties of small droplets under compression. The compression of a bubble by two parallel plates is solved exactly and it is shown that a lowest-order expansion of the solution reduces to a form similar to that obtained by Morse and Witten. Other systems are studied numerically and results for configurations involving between 2 and 20 compressing planes are presented. It is found that the response to compression depends on the number of planes. The shear modulus is also calculated for common lattices and the stability crossover between f.c.c.\ and b.c.c.\ is discussed.
description: RevTeX with psfig-included figures and a galley macro
Entanglement in simple spin networks with a boundary
Creators: name: Ling, Yi
name: Wu, Meng-He
name: Xiao, Yikang
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the bipartite entanglement for the boundary states in a simple type of spin networks with dangling edges, in which the two complementary parts are linked by two or more edges. Firstly, the spin entanglement is considered in the absence of the intertwiner entanglement. By virtue of numerical simulations, we find that the entanglement entropy usually depends on the group elements. More importantly, when the intertwiner entanglement is taken into account, we find that it is in general impossible to separate the total entanglement entropy into the contribution from spins on edges and the contribution from intertwiners at vertices. These situations are in contrast to the case when the two vertices are linked by a single edge.
description: 10 pages, 12 figures, 1 table
Bethe Ansatz for higher spin eight vertex models
Creators: name: Takebe, Takashi
Publisher: name: arXiv
Year: 1995
Subjects: subject: Quantum Algebra (math.QA)
subject: Condensed Matter (cond-mat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: A generalization of the eight vertex model by means of higher spin representations of the Sklyanin algebra is investigated by the quantum inverse scattering method and the algebraic Bethe Ansatz. Under the well-known string hypothesis low-lying excited states are considered and scattering phase shifts of two physical particles are calculated. The $S$ matrix of two particle states is shown to be proportional to the Baxter's elliptic $R$ matrix with a different elliptic modulus from the original one.
description: 39 pages. AMS-LaTeX with amssymb, amsart. Revision: References and several details are added, typos are corrected
PUL OQIMLARI TO'G'RISIDAGI HISOBOTNI XALQARO STANDARTLAR ASOSIDA TUZISH
Creators: name: Turopova, Nigora
name: Jo'rayev, Sardor
Publisher: name: Zenodo
Year: 2024

description: Mazkur maqolada pul oqimlari to’g’risidagi hisobotni moliyaviy hisobotning xalqaro standartlari asosida bevosita usuldan foydalangan holda tuzish tartibi ochib berilgan. Respublikamizda pul oqimlari to’g’risidagi hisobotni tuzishda faqatgina bevosita usuldan foydalanib kelinmoqda, shu sababli biz tomonimizdan bevosita usulni ham tadbiq etilishi investorlarning moliyaviy hisobotlarga ishonchlining oshishiga xizmat qilishiga erishiladi.
Semiclassical theory of shot noise in disordered SN contacts
Creators: name: Nagaev, K. E.
name: Buttiker, M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a semiclassical theory of shot noise in diffusive superconductor - normal metal contacts. At subgap voltages, we reproduce the doubling of shot noise with respect to conventional normal-metal contacts, which is interpreted in terms of an energy balance of electrons. Above the gap, the voltage dependence of the noise crosses over to the standard one with a voltage-independent excess noise. The semiclassical description of noise leads to correlations between currents at different electrodes of multiterminal SN contacts which are always of fermionic type, i.e. negative. Using a quantum extension of the Boltzmann - Langevin method, we reproduce the peculiarity of noise at the Josephson frequency and obtain an analytical frequency dependence of noise at above-gap voltages.
description: 4 pages RevTeX, 1 eps figure
Low frequency spectroscopy of the correlated metallic system $Ca_xSr_{1-x}VO_3$
Creators: name: Rozenberg, M. J.
name: Inoue, I. H.
name: Makino, H.
name: Iga, F.
name: Nishihara, Y.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We study the photoemission and optical conductivity response of the strongly correlated metallic system $Ca_xSr_{1-x}VO_3$. We find that the basic features of the transfer of spectral weight in photoemission experiments and the unusual lineshape of the optical response can be understood by modeling the system with a one band Hubbard model close to the Mott-Hubbard transition. We present a detailed comparison between the low frequency experimental data and the corresponding theoretical predictions obtained within the LISA method that is exact in the limit of large lattice connectivity.
description: 4 pages + 2 figures, revtex
Universality and quasicritical exponents of one-dimensional models displaying a quasitransition at finite temperatures
Creators: name: Rojas, Onofre
name: Strecka, Jozef
name: Lyra, Marcelo Leite
name: de Souza, Sergio Martins
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Quasicritical exponents of one-dimensional models displaying a quasitransition at finite temperatures are examined in detail. The quasitransition is characterized by intense sharp peaks in physical quantities such as specific heat and magnetic susceptibility, which are reminiscent of divergences accompanying a continuous (second-order) phase transition. The question whether these robust finite peaks follow some power law around the quasicritical temperature is addressed. Although there is no actual divergence of these quantities at a quasicritical temperature, a power-law behavior fits precisely both ascending as well as descending part of the peaks in the vicinity but not too close to a quasicritical temperature. The specific values of the quasicritical exponents are rigorously calculated for a class of one-dimensional models (e.g. Ising-XYZ diamond chain, coupled spin-electron double-tetrahedral chain, Ising-XXZ two-leg ladder, and Ising-XXZ three-leg tube), whereas the same set of quasicritical exponents implies a certain `universality' of quasitransitions of one-dimensional models. Specifically, the values of the quasicritical exponents for one-dimensional models are: $α=α'=3$ for the specific heat, $γ=γ'=3$ for the susceptibility and $ν=ν'=1$ for the correlation length.
description: 11 pages, 8 figures
Vector and scalar confinement in gauge theory with a dilaton
Creators: name: Dick, Rainer
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In a recent letter it has been shown that gauge theory with a dilaton provides linearly increasing gauge potentials from static or uniformly moving pointlike colour sources. This ensures confinement in the framework of no-pair equations. Here I would like to point out that a dilaton coupling both to the gauge curvature term and to fermion masses yields a linear potential with a scalar component and a dominant vector contribution.
description: Latex, 7 pages
The steady state quantum statistics of a non-Markovian atom laser
Creators: name: Hope, J. J.
name: Moy, G. M.
name: Collett, M. J.
name: Savage, C. M.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We present a fully quantum mechanical treatment of a single-mode atomic cavity with a pumping mechanism and an output coupling to a continuum of external modes. This system is a schematic description of an atom laser. In the dilute limit where atom-atom interactions are negligible, we have been able to solve this model without making the Born and Markov approximations. When coupling into free space, it is shown that for reasonable parameters there is a bound state which does not disperse, which means that there is no steady state. This bound state does not exist when gravity is included, and in that case the system reaches a steady state. We develop equations of motion for the two-time correlation in the presence of pumping and gravity in the output modes. We then calculate the steady-state output energy flux from the laser.
description: 14 pages (twocloumn), 6 figures
Few-body systems in condensed matter physics
Creators: name: Kezerashvili, Roman Ya.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: This review focuses on the studies and computations of few-body systems of electrons and holes in condensed matter physics. We analyze and illustrate the application of a variety of methods for description of two- three- and four-body excitonic complexes such as an exciton, trion and biexciton in three-, two- and one-dimensional configuration spaces in various types of materials. We discuss and analyze the contributions made over the years to understanding how the reduction of dimensionality affects the binding energy of excitons, trions and biexcitons in bulk and low dimensional semiconductors and address the challenges that still remain.
description: 24 pages, 5 figures
Low frequency, low temperature properties of the spin-boson problem
Creators: name: Horner, Heinz
Publisher: name: arXiv
Year: 2000
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Low temperature and low frequency properties of a spin-boson model are investigated within a super operator and Liouville space formulation. The leading contributions are identified with the help of projection operators projecting onto the equilibrium state. The quantities of interest are expressed in terms of weighted bath propagators and static linear and nonlinear susceptibilities. In particular the generalized Shiba relation and Wilson ratio are recovered.
description: 11 pages Latex
MPEC 2024-G44 : 2019 LD5
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Lower Bounds on Bilepton Processes at e-e- and mu-mu- Colliders
Creators: name: Raidal, M.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that the cross section of at least one of the s-channel processes e-e- (mu-mu-) --> l_i^- l_i^-, i=e,mu,tau, mediated by a doubly-charged scalar triplet bilepton is bounded from below and observable at a linear or muon collider if one of the light neutrinos has a mass in the range where it is required to be unstable by cosmological considerations. The result is model independent. We therefore stress the importance of the e-e- and mu-mu- collision modes of the future colliders for discovering new physics.
description: LATEX, 9 pages
Observation of Two Narrow States Decaying into $Ξ_{c}^{+}γ$ and $Ξ_{c}^{0}γ$
Creators: name: Jessop, C. P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report the first observation of two narrow charmed strange baryons decaying to $Ξ_c^+γ$ and $Ξ_c^0γ$, respectively, using data from the CLEO II detector at CESR. We interpret the observed signals as the $Ξ_c^{+\prime}(c{su})$ and $Ξ_c^{0\prime}(c{sd})$, the symmetric partners of the well-established antisymmetric $Ξ_c^+(c[su])$ and $Ξ_c^0(c[sd])$. The mass differences $M(Ξ_c^{+\prime})-M(Ξ_c^+)$ and $M(Ξ_c^{0\prime})-M(Ξ_c^0)$ are measured to be $107.8\pm 1.7\pm 2.5$ and $107.0\pm 1.4\pm 2.5 MeV/c^2$, respectively.
description: 11 pages, postscript file also available through http://w4.lns.cornell.edu/public/CLNS
A Model for the Elasticity of Compressed Emulsions
Creators: name: Lacasse, Martin-Daniel
name: Grest, Gary S.
name: Levine, Dov
name: Mason, T. G.
name: Weitz, D. A.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a new model to describe the unusual elastic properties of compressed emulsions. The response of a single droplet under compression is investigated numerically for different Wigner-Seitz cells. The response is softer than harmonic, and depends on the coordination number of the droplet. Using these results, we propose a new effective inter-droplet potential which is used to determine the elastic response of a monodisperse collection of disordered droplets as a function of volume fraction. Our results are in excellent agreement with recent experiments. This suggests that anharmonicity, together with disorder, are responsible for the quasi-linear increase of $G$ and $Π$ observed at $φ_c$.
description: RevTeX with psfig-included figures and a galley macro
S8 ARG_CRISPR-Cas_Acr_pseudomonas from Genome-wide correlation analysis suggests different roles of CRISPR-Cas systems in the acquisition of antibiotic resistance genes in diverse species
Creators: name: Saadlee Shehreen
name: Te-Yuan Chyou
name: Fineran, Peter C.
name: Brown, Chris M.
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: Health Care
subject: Diseases
subject: 111706 Epidemiology
subject: FOS: Health sciences
subject: 60408 Genomics

description: CRISPR-Cas systems are widespread in bacterial and archaeal genomes and in their canonical role in phage defence, they confer a fitness advantage. However, CRISPR-Cas may also hinder the uptake of potentially beneficial genes. This is particularly true under antibiotic selection, where preventing the uptake of antibiotic resistance genes could be detrimental. A newly discovered feature within these evolutionary dynamics is anti-CRISPR genes, which inhibit specific CRISPR-Cas systems. We hypothesized that selection for antibiotic resistance might have resulted in an accumulation of anti-CRISPR genes in genomes that harbour CRISPR-Cas systems and horizontally acquired antibiotic resistance genes. To assess that question, we analysed correlations between the CRISPR-Cas, anti-CRISPR and antibiotic resistance gene content of 104 947 reference genomes, including 5677 different species. In most species, the presence of CRISPR-Cas systems did not correlate with the presence of antibiotic resistance genes. However, in some clinically important species, we observed either a positive or negative correlation of CRISPR-Cas with antibiotic resistance genes. Anti-CRISPR genes were common enough in four species to be analysed. In Pseudomonas aeruginosa, the presence of anti-CRISPRs was associated with antibiotic resistance genes. This analysis indicates that the role of CRISPR-Cas and anti-CRISPRs in the spread of antibiotic resistance, is likely to be very different in particular pathogenic species and clinical environments.This article is part of the theme issue ‘The ecology and evolution of prokaryotic CRISPR-Cas adaptive immune systems’.
Reissner-Mindlin shell theory based on tangential differential calculus
Creators: name: Schöllhammer, D.
name: Fries, T. P.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: The linear Reissner-Mindlin shell theory is reformulated in the frame of the tangential differential calculus (TDC) using a global Cartesian coordinate system. The rotation of the normal vector is modelled with a difference vector approach. The resulting equations are applicable to both explicitly and implicitly defined shells, because the employed surface operators do not necessarily rely on a parametrization. Hence, shell analysis on surfaces implied by level-set functions is enabled, but also the classical case of parametrized surfaces is captured. As a consequence, the proposed TDC-based formulation is more general and may also be used in recent finite element approaches such as the TraceFEM and CutFEM where a parametrization of the middle surface is not required. Herein, the numerical results are obtained by isogeometric analysis using NURBS as trial and test functions for classical and new benchmark tests. In the residual errors, optimal higher-order convergence rates are confirmed when the involved physical fields are sufficiently smooth.
description: Submitted to Computer Methods in Applied Mechanics and Engineering V1: Initial submission. V2: Revised version. arXiv admin note: text overlap with arXiv:1805.11978
The Sixth-Moment Sum Rule For the Pair Correlations of the Two-Dimensional One-Component Plasma: Exact Result
Creators: name: Kalinay, P.
name: Markos, P.
name: Samaj, L.
name: Travenec, I.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The system under consideration is a two-dimensional one-component plasma in fluid regime, at density n and at arbitrary coupling Gamma=beta e^2 (e=unit charge, beta = inverse temperature). The Helmholtz free energy of the model, as the generating functional for the direct pair correlation c, is treated in terms of a convergent renormalized Mayer diagrammatic expansion in density. Using specific topological transformations within the bond-renormalized Mayer expansion we prove that the nonzero contributions to the regular part of the Fourier component of c up to the k^2-term originate exclusively from the ring diagrams (unable to undertake the bond-renormalization procedure) of the Helmholtz free energy. In particular, c(k)=-Gamma/k^2 + Gamma/(8 pi n) - k^2/[96(pi n)^2] + O(k^4). This result fixes via the Ornstein-Zernike relation, besides the well-known zeroth-, second- and fourth- moment sum rules, the new six-momnt condition for the truncated pair correlation h, n(pi Gamma n/2)^3 Integral r^6 h(r) d^2 r = 3(Gamma-6)(8-3 Gamma)/4.
description: 24 pages
Origin and pressure dependence of ferromagnetism in A2Mn2O7 pyrochlores (A=Y, In, Lu, and Tl)
Creators: name: Nunez-Regueiro, M. D.
name: Lacroix, C.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Non-conventional mechanisms have been recently invoked in order to explain the ferromagnetic ground state of A2Mn2O7 pyrochlores (A=Y, In, Lu and Tl) and the puzzling decrease of their Curie temperatures with applied pressure. Here we show, using a perturbation expansion in the Mn-O hopping term, that both features can be understood within the superexhange model, provided that the intra-atomic oxygen interactions are properly taken into account. An additional coupling between the Mn ions mediated by the In(5s)/Tl(6s) bands yields the higher Tc's of these two compounds, this mechamism enhancing their ferromagnetism for higher pressures.
description: 7 pages and 2 figures submitted to Phys. Rev. B, missing text added
A Factor Graph Approach to Multi-Camera Extrinsic Calibration on Legged Robots
Creators: name: Reinke, Andrzej
name: Camurri, Marco
name: Semini, Claudio
Publisher: name: arXiv
Year: 2018
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Legged robots are becoming popular not only in research, but also in industry, where they can demonstrate their superiority over wheeled machines in a variety of applications. Either when acting as mobile manipulators or just as all-terrain ground vehicles, these machines need to precisely track the desired base and end-effector trajectories, perform Simultaneous Localization and Mapping (SLAM), and move in challenging environments, all while keeping balance. A crucial aspect for these tasks is that all onboard sensors must be properly calibrated and synchronized to provide consistent signals for all the software modules they feed. In this paper, we focus on the problem of calibrating the relative pose between a set of cameras and the base link of a quadruped robot. This pose is fundamental to successfully perform sensor fusion, state estimation, mapping, and any other task requiring visual feedback. To solve this problem, we propose an approach based on factor graphs that jointly optimizes the mutual position of the cameras and the robot base using kinematics and fiducial markers. We also quantitatively compare its performance with other state-of-the-art methods on the hydraulic quadruped robot HyQ. The proposed approach is simple, modular, and independent from external devices other than the fiducial marker.
description: To appear on "The Third IEEE International Conference on Robotic Computing (IEEE IRC 2019)"
Generalized Crossover in Interacting Fermions within the Low-Energy Expansion
Creators: name: Tajima, Hiroyuki
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We generalize the Bardeen-Cooper-Schrieffer-Bose-Einstein-condensation (BCS-BEC) crossover of two-component fermions, which is realized by tuning the $s$-wave scattering length $a$ between the fermions, to the case of an arbitrary effective range $r_{\rm e}$. By using the Nozières-Schmitt-Rink (NSR) approach, we show another crossover by changing $r_{\rm e}$ and present several similarities and differences between these two crossovers. Furthermore, the region ($r_{\rm e}>a/2$) where the effective range expansion breaks down and the Hamiltonian becomes non-Hermitian is found, being consistent with the Wigner's causality bound. Our results are universal for low-density interacting fermions with low-energy constants $a$ and $r_{\rm e}$ and are directly relevant to ultracold Fermi atomic gases as well as dilute neutron matter.
description: 6 pages, 4 figures, accepted by J. Phys. Soc. Jpn
Dynamically Driven Renormalization Group
Creators: name: Vespignani, Alessandro
name: Zapperi, Stefano
name: Loreto, Vittorio
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We present a detailed discussion of a novel dynamical renormalization group scheme: the Dynamically Driven Renormalization Group (DDRG). This is a general renormalization method developed for dynamical systems with non-equilibrium critical steady-state. The method is based on a real space renormalization scheme driven by a dynamical steady-state condition which acts as a feedback on the transformation equations. This approach has been applied to open non-linear systems such as self-organized critical phenomena, and it allows the analytical evaluation of scaling dimensions and critical exponents. Equilibrium models at the critical point can also be considered. The explicit application to some models and the corresponding results are discussed.
description: Revised version, 50 LaTex pages, 6 postscript figures
Soil carbon-concentration and carbon-climate feedbacks in CMIP6 Earth system models
Creators: name: Varney, Rebecca
Publisher: name: Zenodo
Year: 2024

description: Python code for 'Soil carbon-concentration and carbon-climate feedbacks in CMIP6 Earth system models' in Biogeosciences (https://doi.org/10.5194/egusphere-2023-2666).