cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Topological walking bipeds with and without cargo
Creators: name: Mirzaee Kakhki, Mahla
Publisher: name: University of Bayreuth
Year: 2021
Subjects: subject: Experimental Physics
subject: Topology
subject: Walking
subject: Bipeds
subject: Colloids
subject: 530

description: This cumulative thesis is dedicated to the experimental study of the adiabatic and nonadiabatic transport of colloidal bipeds that walk on top of periodic magnetic patterns. It builds on work on the transport of single colloidal particles on top of the same magnetic patterns. Colloidal bipeds are rods self assembled from single colloidal particles. We may theoretically view such bipeds as single particles obtained from a single isotropic colloidal particle by deforming it from the isotropic shape towards the length of the experimental colloidal biped. The rod lengths is a continuous parameter. I address the question how a continuous change of the biped lengths effects the topological nature of the biped transport that occurs if I periodically modulate a homogeneous external magnetic field as a function of time. I will sort bipeds of certain length ranges into different topological classes that are transported differently but commensurate with the period of the magnetic pattern. I will show, how to invert the relation between the external modulation loop and the resulting transport directions. The inversion allows to a priori know the parallel polyglot commands in form of the external field loops given the desired transport directions of the different topological classes of bipeds. I will use the so developed polyglot language to program polymerization addition reactions between bipeds and I will program the simultaneous writing of different letters to form a word. I will extend a gauge theory on transport in low Reynolds number fluids to the situation of bipeds on a pattern and explain what we can learn about the physics of walking bipeds by analyzing their motion in two different gauges. I will explain what happens if we leave the adiabatic regime and how hydrodynamic friction alters the walking character of the bipeds. Finally I will use non-adiabatic modulation to transfer the topological transport from bipeds still able to walk to single colloids that if left separated from the bipeds are no longer able to move.
Uncertainty in hybrid gravitational waveforms: Optimizing initial orbital frequencies for binary black-hole simulations
Creators: name: Boyle, Michael
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A general method is presented for estimating the uncertainty in hybrid models of gravitational waveforms from binary black-hole systems with arbitrary physical parameters, and thence the highest allowable initial orbital frequency for a numerical-relativity simulation such that the combined analytical and numerical waveform meets some minimum desired accuracy. The key strength of this estimate is that no prior numerical simulation in the relevant region of parameter space is needed, which means that these techniques can be used to direct future work. The method is demonstrated for a selection of extreme physical parameters. It is shown that optimal initial orbital frequencies depend roughly linearly on the mass of the binary, and therefore useful accuracy criteria must depend explicitly on the mass. The results indicate that accurate estimation of the parameters of stellar-mass black-hole binaries in Advanced LIGO data or calibration of waveforms for detection will require much longer numerical simulations than are currently available or more accurate post-Newtonian approximations -- or both -- especially for comparable-mass systems with high spin.
description: Corrected figures (only large mismatches are affected); added references; accepted in Phys. Rev. D
SUSY Ward identities, Superamplitudes, and Counterterms
Creators: name: Elvang, Henriette
name: Freedman, Daniel Z.
name: Kiermaier, Michael
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Ward identities of SUSY and R-symmetry relate n-point amplitudes in supersymmetric theories. We review recent work in which these Ward identities are solved in N=4 SYM and N=8 supergravity. The solution, valid at both tree and loop level, expresses any (Next-to)^K MHV superamplitude in terms of a basis of ordinary amplitudes. Basis amplitudes are classified by semi-standard tableaux of rectangular N-by-K Young diagrams. The SUSY Ward identities also impose constraints on the matrix elements of candidate ultraviolet counterterms in N=8 supergravity, and they can be studied using superamplitude basis expansions. This leads to a novel and quite comprehensive matrix element approach to counterterms, which we also review. This article is an invited review for a special issue of Journal of Physics A devoted to "Scattering Amplitudes in Gauge Theories".
description: 33 pages. Invited review for a special issue of Journal of Physics A devoted to "Scattering Amplitudes in Gauge Theories." v2: references added
Snow sport head injury : characterization of clinical presentation and design of a relevant head impact apparatus
Creators: name: Stuart, Cameron Andrew
Publisher: name: University of British Columbia
Year: 2017

description: With head injury being the leading cause of death from skiing and snowboarding in North America, a better understanding of the mechanisms at play and improved preventative measures are necessary. Safety certification standards exist for snow sport helmets in an effort to evaluate potential technologies as well as ensure helmets offer protection to the user. However, current protocols are seen to be oversimplifications of real world head impacts, particularly from skiing and snowboarding. The purpose of this work is to mechanistically characterize snow sport head injury and design a test apparatus capable of representing these real world head impact scenarios. In an effort to characterize the fall mechanisms and injuries of snow sport head impact, a clinical investigation was performed. A 6 year retrospective clinical case review yielded a database of 760+ incidents for which basic demographic information, gross mechanism detail, nature and severity of injuries sustained and helmet use data was collected. In addition to epidemiological insight, the database highlighted the need for a revised standard testing protocol through observation of several general fall scenarios, a high prevalence of concussion (considered a low-energy injury) and the majority of impacts occurring to snow or ice surfaces. This information, in conjunction with existing biomechanics literature, informed the design of a helmet testing apparatus capable of recreating snow sport head impact mechanisms. Through a formal design process involving stakeholder discovery, development of design requirements, concept generation and evaluation, and detailed design, a final apparatus was decided upon and fabricated. To investigate if the test apparatus was capable of satisfying the requirements set forth, namely impact velocity and repeatability, verification testing was performed. Recommendations are made for conditions that remained either partially met or unmet. To address the need for an improved understanding of snow sport head injury mechanisms in the context of helmet testing, clinical data and existing literature was used. As a result, a test apparatus capable of more representative impact testing protocols was developed. Aspects of this work can be adopted by the head injury research and helmet standards communities in order to improve design and evaluation of preventative equipment.
Impact of shell crossing and scope of perturbative approaches in real and redshift space
Creators: name: Valageas, Patrick
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the effect of nonperturbative corrections associated with the behavior of particles after shell crossing on the matter power spectrum. We compare their amplitude with the perturbative terms that can be obtained within the fluid description of the system, to estimate the range of scales where such perturbative approaches are relevant. We use the simple Zeldovich dynamics as a benchmark, as it allows the exact computation of the full nonlinear power spectrum and of perturbative terms at all orders. Then, we introduce a "sticky model" that coincides with the Zeldovich dynamics before shell crossing but shows a different behavior afterwards. Thus, their power spectra only differ in their nonperturbative terms. We consider both the real-space and redshift-space power spectra. We find that the potential of perturbative schemes is greater at higher redshift for a $Λ$CDM cosmology. For the real-space power spectrum, one can go up to order $66$ of perturbation theory at $z=3$, and to order $9$ at $z=0$, before the nonperturbative correction surpasses the perturbative correction of that order. This allows us to increase the upper bound on $k$ where systematic theoretical predictions may be obtained by perturbative schemes, beyond the linear regime, by a factor $\sim 26$ at $z=3$ and $\sim 6.5$ at $z=0$. This provides a strong motivation to study perturbative resummation schemes, especially at high redshifts $z \geq 1$. We find similar results for the redshift-space power spectrum, with characteristic wavenumbers that are shifted to lower values as redshift-space distortions amplify higher order terms of the perturbative expansions while decreasing the resummed nonlinear power at high $k$.
description: 16 pages
title: Förderpreis schafft Förderung – abiLehre und die VÖB
title: Statement
Creators: name: Feitsch, Nathalie
name: Habermayer-Sandner, Andreas
name: Linninger, Jennifer
Publisher: name: Graz University Library Publishing
Year: 2021

description: 75 Jahre VÖB. 1946–2021, Hg. v. Alker-Windbichler, Bauer und Köstner-Pemsel, 2021, S. 343–345
Routh Reduction by Stages
Creators: name: Langerock, Bavo
name: Mestdag, Tom
name: Vankerschaver, Joris
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This paper deals with the Lagrangian analogue of symplectic or point reduction by stages. We develop Routh reduction as a reduction technique that preserves the Lagrangian nature of the dynamics. To do so we heavily rely on the relation between Routh reduction and cotangent symplectic reduction. The main results in this paper are: (i) we develop a class of so called magnetic Lagrangian systems and this class has the property that it is closed under Routh reduction; (ii) we construct a transformation relating the magnetic Lagrangian system obtained after two subsequent Routh reductions and the magnetic Lagrangian system obtained after Routh reduction w.r.t. to the full symmetry group.
Heliimonas
Creators: name: Albuquerque, Luciana
name: Egas, Conceição
Publisher: name: Zenodo
Year: 2020
Subjects: Bacteroidetes
Chitinophagaceae
Mesophilic
Aerobic
Chemoorganotrophic

description: The genus Heliimonas comprises one species named Heliimonas saccharivorans. The organism forms pleomorphic cells. The species is nonmotile and has no gliding motility. The organism stain Gram-negative and the colonies are cream-coloured. The species H. saccharivorans is mesophilic and strictly aerobic. Possess cytochrome c oxidase and is catalase positive. Chemoorganotrophic. Growth factors are necessary for growth in minimal medium. Carbohydrates are used as carbon and energy source, but amino acids, organic acids and polyols are not assimilated. Amino acids are used as nitrogen source. Menaquinone 7 (MK-7) is the only respiratory quinone. The major polar lipids are phosphatidylethanolamine (PE), one unidentified phospholipid (PL) and one unidentified lipid (UL). Acyl chains are predominantly iso-branched and 3-OH fatty acids, namely iso-C17:0 3-OH, iso-C15:0, and iso-C15:1 G. The type strain was isolated from a deep aquifer. DNA G+C content (mol%): 41.4–42.0 (HPLC). Type species: Heliimonas saccharivorans Leandro et al. 2013VP
Phase diagram and a possible unified description of intercalated iron selenide superconductors
Creators: name: You, Yi-Zhuang
name: Yang, Fan
name: Kou, Su-Peng
name: Weng, Zheng-Yu
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose a theoretical description of the phase diagram and physical properties in A2Fe4Se5-type (A=K, Tl) compounds based on a coexistent local moment and itinerant electron picture. Using neutron scattering and ARPES measurements to fix the general structure of the local moment and itinerant Fermi pockets, we find a superconducting (SC) regime with s-wave pairing at the M pockets and an incipient sign-change s-wave near the Gamma point, which is adjacent to an insulating state at low doping and a charge-density-wave (CDW) state at high doping. The uniform susceptibility and resistivity are found to be consistent with the experiment. The main distinction with iron pnictide superconductors is also discussed.
description: 4 pages, 5 figures
Parent formulation at the Lagrangian level
Creators: name: Grigoriev, Maxim
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The recently proposed first-order parent formalism at the level of equations of motion is specialized to the case of Lagrangian systems. It is shown that for diffeomorphism-invariant theories the parent formulation takes the form of an AKSZ-type sigma model. The proposed formulation can be also seen as a Lagrangian version of the BV-BRST extension of the Vasiliev unfolded approach. We also discuss its possible interpretation as a multidimensional generalization of the Hamiltonian BFV--BRST formalism. The general construction is illustrated by examples of (parametrized) mechanics, relativistic particle, Yang--Mills theory, and gravity.
description: 26 pages, discussion of the truncation extended, typos corrected, references added
Large-scale bias of dark matter halos
Creators: name: Valageas, Patrick
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We build a simple analytical model for the bias of dark matter halos that applies to objects defined by an arbitrary density threshold, $200\leq\deltas\leq 1600$, and that provides accurate predictions from low-mass to high-mass halos. We point out that it is possible to build simple and efficient models, with no free parameter for the halo bias, by using integral constraints that govern the behavior of low-mass and typical halos, whereas the properties of rare massive halos are derived through explicit asymptotic approaches. We also describe how to take into account the impact of halo motions on their bias, using their linear displacement field. We obtain a good agreement with numerical simulations for the halo mass functions and large-scale bias at redshifts $0\leq z \leq 2.5$, for halos defined by a nonlinear density threshold $200\leq\deltas\leq 1600$. We also evaluate the impact on the halo bias of two common approximations, i) neglecting halo motions, and ii) linearizing the halo two-point correlation.
description: 12 pages
title: Ehre, wem Ehre gebührt!
title: Statement
Creators: name: Hamedinger, Wolfgang
Publisher: name: Graz University Library Publishing
Year: 2021

description: 75 Jahre VÖB. 1946–2021, Hg. v. Alker-Windbichler, Bauer und Köstner-Pemsel, 2021, S. 347–349
Quantum Spectrum of Cherenkov Glue
Creators: name: Alfimov, Mikhail
name: Leonidov, Andrei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Full quantum calculation of Cherenkov gluon radiation by quark and gluon currents and a Cherenkov decay of a gluon into a pair of Cherenkov gluons in transparent media is performed. Energy losses due to Cherenkov gluon radiation in high energy nuclear collisions are calculated. The angular distribution of the energy flow due to the radiation of Cherenkov gluons is analyzed.
description: 10 pages, 9 figures, misprints and references corrected, version accepted to Nuclear Physics A
Role of friction-induced torque in stick-slip motion
Creators: name: Scheibert, Julien
name: Dysthe, Dag Kristian
Publisher: name: arXiv
Year: 2010
Subjects: subject: Classical Physics (physics.class-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present a minimal quasistatic 1D model describing the kinematics of the transition from static friction to stick-slip motion of a linear elastic block on a rigid plane. We show how the kinematics of both the precursors to frictional sliding and the periodic stick-slip motion are controlled by the amount of friction-induced torque at the interface. Our model provides a general framework to understand and relate a series of recent experimental observations, in particular the nucleation location of micro-slip instabilities and the build up of an asymmetric field of real contact area.
description: 6 pages, 5 figures
On the Growth Rate of Non-Enzymatic Molecular Replicators
Creators: name: Fellermann, Harold
name: Rasmussen, Steen
Publisher: name: arXiv
Year: 2011
Subjects: subject: Biomolecules (q-bio.BM)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: It is well known that non-enzymatic template directed molecular replicators X + nO ---> 2X exhibit parabolic growth d[X]/dt = k [X]^{1/2}. Here, we analyze the dependence of the effective replication rate constant k on hybridization energies, temperature, strand length, and sequence composition. First we derive analytical criteria for the replication rate k based on simple thermodynamic arguments. Second we present a Brownian dynamics model for oligonucleotides that allows us to simulate their diffusion and hybridization behavior. The simulation is used to generate and analyze the effect of strand length, temperature, and to some extent sequence composition, on the hybridization rates and the resulting optimal overall rate constant k. Combining the two approaches allows us to semi-analytically depict a fitness landscape for template directed replicators. The results indicate a clear replication advantage for longer strands at low temperatures.
description: Submitted to: Entropy
An investigation of magnetic field distortions in accretion discs around neutron stars - II. Analysis of the toroidal field component
Creators: name: Naso, L.
name: Miller, J. C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Millisecond pulsars are believed to be old pulsars spun up by a surrounding accretion disc. Magnetic fields are thought to play a leading role in this, both by determining the location of the inner edge of the disc and by exerting an additional torque on the star (as a result of the interaction between the stellar magnetic field and the disc plasma motion, which creates a toroidal component B_phi). In some well-known analytic models, developed in the 1980s, the B_phi profile was taken to be proportional to the relative angular velocity between the disc plasma and the neutron star, multiplied by a vertical dipolar field. The present work stands in the line of improving those models, suggesting a new profile for B. In a previous paper, we discussed the poloidal component of the magnetic field and here we consider the toroidal component, again making the kinematic approximation and looking for steady solutions of the induction equation for axisymmetric models. The poloidal magnetic field is not assumed to be dipolar and the poloidal velocity field is not taken to be zero everywhere. We also do not use the thin disc approximation to simplify the induction equation but instead solve it numerically in full 2D. The profile obtained in the earlier analytic models is shown to have very limited validity and a more general semi-analytic solution is proposed.
description: Published in A&A - 13 pages, 17 figures and one table - Changes with respect to previous version: added comment on magnetic Prandtl number; minor modifications (added comment on mean field induction equation, removed confusion about the names of some variables, updated references, merged two figures, removed references from abstract)
Possible Origin of Rapid Variability of Gamma-Ray Bursts due to Convective Energy Transfer in Hyperaccretion Disks
Creators: name: Kawanaka, Norita
name: Kohri, Kazunori
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We investigate the effects of the convection in the hyperaccretion disk around a stellar-mass black hole, which is considered to be the central engine of gamma-ray bursts (GRBs), with simple analytical calculations. If the convective energy transfer in the vertical direction becomes efficient compared with the inward advective energy transport, the hyperaccretion disk is expected to be hotter and the neutrino emission due to the electron-positron annihilation becomes the most efficient cooling process. We find that the sequence of the thermal equilibrium solutions for the convective hyperaccretion disk would have a viscously unstable branch, especially when the viscosity parameter is relatively small (alpha
description: 5 pages, 2 figures, accepted for publication in MNRAS
On the nature of the X(3872) from QCD
Creators: name: Narison, S.
name: Navarra, F. S.
name: Nielsen, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We have studied some possible four-quark and molecule contents of the X(3872) using double ratios of sum rules, which are more accurate than the usual simple ratios often used in the literature for getting the hadron masses. We found that the different structures (\bar 3-3 and \bar 6-6 tetraquarks and D-D^{(*)} molecule) lead to the same prediction for the mass (within the accuracy of the method), indicating that the alone prediction of the X mass may not be sufficient to reveal its nature. In doing these analyses, we also find that (within our approximation) the use of the \bar{MS} running {\bar m}_c(m_c^2), rather than the on-shell mass, is more appropriate to obtain the J/ψand X meson masses. Using vertex sum rules to roughly estimate the X(3872) hadronic and radiative widths, we found that the available experimental data does not exclude a λ-J/ψ-like molecule current.
description: Latex sources, 9 pages, 5 figures, 1 table. Improved version to be published in Phys. Rev. D with the inclusion of the estimate of the X radiative width. More references added
DNA translocation through nanopores with salt gradients: The role of osmotic flow
Creators: name: Hatlo, Marius M.
name: Panja, Debabrata
name: van Roij, René
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Recent experiments of translocation of double stranded DNA through nanopores [M. Wanunu \textit{et al.} Nature Nanotech. {\bf 5}, 160 (2010)] reveal that the DNA capture rate can be significantly influenced by a salt gradient across the pore. We show that osmotic flow combined with electrophoretic effects can quantitatively explain the experimental data on the salt-gradient dependence of the capture rate.
description: 4 pages, 2 figures, 2 pages of supplementary online material with 2 figures, extra material added, to appear in Phys. Rev. Lett
Half-metallic Surface States and Topological Superconductivity in NaCoO$_2$ from first principles
Creators: name: Weng, Hongming
name: Xu, Gang
name: Zhang, Haijun
name: Zhang, Shou-Cheng
name: Dai, Xi
name: Fang, Zhong
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Based on first-principles calculations, we predict a half-metallic surface state in layered bulk insulator NaCoO2, with tunable surface hole concentration. The half-metallic surface has a single Fermi surface with a helical spin texture, similar to the surface state of topological insulators, but with the key difference of time-reversal symmetry breaking in the present case. We propose the realization of topological superconductivity and Majorana fermions when the half-metallic surface states are in proximity contact with a conventional superconductor.
description: Published as Rapid Communications in Phys. Rev. B 84, 060408(R) (2011) [4 pages]
Limits on the production of the Standard Model Higgs Boson in pp collisions at sqrt(s) =7 TeV with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for the Standard Model Higgs boson at the Large Hadron Collider (LHC) running at a centre-of-mass energy of 7 TeV is reported, based on a total integrated luminosity of up to 40 pb^-1 collected by the ATLAS detector in 2010. Several Higgs boson decay channels: H -> γγ, H -> ZZ (*) -> llll, H -> ZZ -> llνν, H -> ZZ -> llqq, H -> W W (*) -> lνlν and H -> W W -> lνqq (l is e, μ) are combined in a mass range from 110 GeV to 600 GeV. The highest sensitivity is achieved in the mass range between 160 GeV and 170 GeV, where the expected 95% CL exclusion sensitivity is at Higgs boson production cross sections 2.3 times the Standard Model prediction. Upper limits on the cross section for its production are determined. Models with a fourth generation of heavy leptons and quarks with Standard Model-like couplings to the Higgs boson are also investigated and are excluded for a Higgs boson mass in the range from 140 GeV to 185 GeV.
description: 19 pages plus author list (31 pages total), 12 figures, 10 tables, final version as it appears in EPJC
Modifying Faugère's F5 Algorithm to ensure termination
Creators: name: Eder, Christian
name: Gash, Justin
name: Perry, John
Publisher: name: arXiv
Year: 2010
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: I.1.2
subject: 13P10

description: The structure of the F5 algorithm to compute Gröbner bases makes it very efficient. However, while it is believed to terminate for so-called regular sequences, it is not clear whether it terminates for all inputs. This paper has two major parts. In the first part, we describe in detail the difficulties related to a proof of termination. In the second part, we explore three variants that ensure termination. Two of these have appeared previously only in dissertations, and ensure termination by checking for a Gröbner basis using traditional criteria. The third variant, F5+, identifies a degree bound using a distinction between "necessary" and "redundant" critical pairs that follows from the analysis in the first part. Experimental evidence suggests this third approach is the most efficient of the three.
description: 19 pages, 1 table
Toward a Universal Formulation of the Halo Mass Function
Creators: name: Corasaniti, P. S.
name: Achitouv, I.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the dark matter halo mass function using the excursion set formalism for a diffusive barrier with linearly drifting average which captures the main features of the ellipsoidal collapse model. We evaluate the non-Markovian corrections due to the sharp filtering of the linear density field in real space with a path-integral method. We find an unprecedented agreement with N-body simulation data with deviations within ~5% level over the range of masses probed by the simulations. This indicates that the Excursion Set in combination with a realistic modelling of the collapse threshold can provide a robust estimation of the halo mass function.
description: 5 pages, 2 figures; substantial corrections, results unchanged. Matches PRL published version
A combinatorial model for tame frieze patterns
Creators: name: Cuntz, Michael
Publisher: name: Mathematisches Institut (Universität Münster)
Year: 2019
Subjects: 510 Mathematik

description: Let R be an arbitrary subset of a commutative ring. We introduce a combinatorial model for the set of tame frieze patterns with entries in R based on a notion of irreducibility of frieze patterns. When R is a ring, then a frieze pattern is reducible if and only if it contains an entry (not on the border) which is 1 or −1. To my knowledge, this model generalizes simultaneously all previously presented models for tame frieze patterns bounded by 0s and 1s.
LEA_D6.2 LEA stakeholder base
Creators: name: Stiger, Dominika
Publisher: name: Zenodo
Year: 2019
Subjects: learning technology, innovation procurement, stakeholder, data base

description: This document presents LEA Stakeholder base which is a table of LEA partners’

relevant contacts. All partners were asked to complete a stakeholder pool form,

which, when combined, forms the LEA project’s stakeholder base. The stakeholder

pool form is a list of organisations and people in the partners’ networks, regions,

cities, countries etc. who are interested in the LEA project and its results and who

can be valuable stakeholders for the project.

The list includes procurers, suppliers, Learning Technology experts and schools,

universities and other educational facilities, but also in addition key figures in a

public office, regional and national networks etc. LEA Stakeholder base is a starting

point for the LEA-Network creation: these organisations can become LEA followers

and partners can disseminate LEA related information to them.
Low mass dimuons within a hybrid approach
Creators: name: Santini, Elvira
name: Bleicher, Marcus
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We analyse dilepton emission from hot and dense hadronic matter using a hybrid approach based on the Ultrarelativistic Quantum Molecular Dynamics (UrQMD) transport model with an intermediate hydrodynamic stage for the description of heavy-ion collisions at relativistic energies. Focusing on the enhancement with respect to the contribution from long-lived hadron decays after freeze-out observed at the SPS in the low mass region of the dilepton spectra (often referred to as "the excess"), the relative importance of the emission from the equilibrium and the non-equilibrium stages is discussed.
description: Proceedings of Hot Quarks 2010, 21-26 June 2010 Las Londe Les Maures; v2: Corrected typos and added a comment
On the classification of Hermitian self-dual additive codes over GF(9)
Creators: name: Danielsen, Lars Eirik
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: Information Theory (cs.IT)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Additive codes over GF(9) that are self-dual with respect to the Hermitian trace inner product have a natural application in quantum information theory, where they correspond to ternary quantum error-correcting codes. However, these codes have so far received far less interest from coding theorists than self-dual additive codes over GF(4), which correspond to binary quantum codes. Self-dual additive codes over GF(9) have been classified up to length 8, and in this paper we extend the complete classification to codes of length 9 and 10. The classification is obtained by using a new algorithm that combines two graph representations of self-dual additive codes. The search space is first reduced by the fact that every code can be mapped to a weighted graph, and a different graph is then introduced that transforms the problem of code equivalence into a problem of graph isomorphism. By an extension technique, we are able to classify all optimal codes of length 11 and 12. There are 56,005,876 (11,3^11,5) codes and 6493 (12,3^12,6) codes. We also find the smallest codes with trivial automorphism group.
description: 12 pages, 6 figures
Dilation of arbitrary symmetric quantum dynamical semigroups on $B(\clh)$
Creators: name: Das, Biswarup
Publisher: name: arXiv
Year: 2010
Subjects: subject: Operator Algebras (math.OA)
subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 81S25 (46L55 46L60 46N50 60J25)

description: We prove the existence of Hudson Parthasarathy dilation of a quantum dynamical semigroup on $B(\clh),$ which is symmetric with respect to the canonical normal trace on it.
Ophrys passionis subsp. passionis Sennen ex Devillers-Tersch. & Devillers, prima segnalazione per l'arcipelago di Malta
Creators: name: Romieg Soca
Publisher: name: Zenodo
Year: 2012
Subjects: Ophrys passionis

description: Campo V., Souche R., Romolini R. & Giorgi T., 2012. Ophrys passionis subsp. passionis Sennen ex Devillers-Tersch. & Devillers, prima segnalazione per l'arcipelago di Malta. GIROS Notizie 50: 44-45.
Conserved Density Fluctuation and Temporal Correlation Function in HTL Perturbation Theory
Creators: name: Haque, Najmul
name: Mustafa, Munshi G.
name: Thoma, Markus H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Considering recently developed Hard Thermal Loop perturbation theory that takes into account the effect of the variation of the external field through the fluctuations of a conserved quantity we calculate the temporal component of the Euclidian correlation function in the vector channel. The results are found to be in good agreement with the very recent results obtained within the quenched approximation of QCD and small values of the quark mass ($\sim 0.1T$) on improved lattices of size $128^3\times N_τ$ at ($N_τ=40, \ T=1.2T_C$), ($N_τ=48, \ T=1.45T_C$), and ($N_τ=16, \ T=2.98T_C$), where $N_τ$ is the temporal extent of the lattice. This suggests that the results from lattice QCD and Hard Thermal Loop perturbation theory are in close proximity for a quantity associated with the conserved density fluctuation.
description: 16 pages, 4 figures; One para added in introduction, Fig 1 modified; Accepted in Phys. Rev. D
Connection between the renormalization groups of Stückelberg-Petermann and Wilson
Creators: name: Duetsch, Michael
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The Stueckelberg-Petermann renormalization group is the group of finite renormalizations of the S-matrix in the framework of causal perturbation theory. The renormalization group in the sense of Wilson relies usually on a functional integral formalism, it describes the dependence of the theory on a UV-cutoff $Λ$; a widespread procedure is to construct the theory by solving Polchinski's flow equation for the effective potential. To clarify the connection between these different approaches we proceed as follows: in the framework of causal perturbation theory we introduce an UV-cutoff $Λ$, define an effective potential $V_Λ$, prove a pertinent flow equation and compare with the corresponding terms in the functional integral formalism. The flow of $V_Λ$ is a version of Wilson's renormalization group. The restriction of these operators to local interactions can be approximated by a subfamily of the Stueckelberg-Petermann renormalization group.
description: 20 pages; a few formulations improved. To appear in a volume on "Algebraic, geometric and probabilistic aspects of renormalization" in Confluentes Mathematici
Neutrino nonstandard interactions in the supernova
Creators: name: Das, C. R.
name: Pulido, Joao
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Neutrino nonstandard interactions (NSI) were investigated earlier in the solar case and were shown to reduce the tensions between the data and the large mixing angle solution predictions. We extend the previous framework to the supernova and evaluate the appearance probabilities for neutrinos and antineutrinos as a function of their energy after leaving the collapsing star with and without NSI. For normal hierarchy the probability for electron neutrinos and antineutrinos at low energy ($E\lesssim 0.8-0.9 MeV$) is substantially increased with respect to the non-NSI case and joins its value for inverse hierarchy which is constant with energy. Also for inverse hierarchy the NSI and non-NSI probabilities are the same for each neutrino and antineutrino species. Although detection in such a low energy range remains at present an experimental challenge, it will become a visible trace of NSI with normal hierarchy if they exist. On the other hand the neutrino decay probability into an antineutrino and a majoron, an effect previously shown to be induced by dense matter, is, as in the case of the sun, too small to be observed as a direct consequence of NSI.
description: Final version. Journal ref. Phys.Rev.D84, 105040 (2011)
On the corrections to the Casimir effect depending on the resolution of measurement
Creators: name: Altaisky, Mikhail
name: Kaputkina, Natalia
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Casimir force $\cF = -\frac{π^2\hbar c}{240a^4}$, which attracts to each other two perfectly conducting parallel plates separated by the distance $a$ in vacuum, is one of the blueprints of the reality of vacuum fluctuations. Following the recent conjecture, that quantum fields should be described in terms of the fields depending on the resolution of measurement, rather than the position alone (M.V.Altaisky, Phys. Rev. D 81(2010)125003), we derive the correction to the Casimir energy depending on the ratio of the plate displacement amplitude to the distance between plates.
description: RevTex, 5 pages, 2 eps figures. Subm. JETP Lett. V.94, N 5, 2011
Symmetry group of massive Yang-Mills theories without Higgs and their quantization
Creators: name: Aldaya, V.
name: Calixto, M.
name: López-Ruiz, F. F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We analyze the symmetry group of massive Yang-Mills theories and their quantization strongly motivated by an already proposed alternative to the Standard Model of electroweak interactions without Higgs. In these models the mass generation of the intermediate vector bosons is based on a non-Abelian Stueckelberg mechanism where the dynamics of the Goldstone-like bosons is addressed by a partial-trace Non-Linear-Sigma piece of the Lagrangian. In spite of the high non-linearity of the scalar sector, the existence of an infinite number of symmetries, extending the traditional gauge group, allows us to sketch a group-theoretical quantization algorithm specially suited to non-linear systems, which departs from usual canonical quantization. On the quantum representation space of this extended symmetry group, a quantum Hamiltonian preserving the representation is given, whose classical analog reproduces the equations of motion.
description: 24 pages, content modified, structure modified
Search for Heavy Long-Lived Charged Particles with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for long-lived charged particles reaching the muon spectrometer is performed using a data sample of 37 pb^-1 from pp collisions at sqrt(s) = 7 TeV collected by the ATLAS detector at the LHC. No excess is observed above the estimated background. Stable stau's are excluded at 95% CL up to a mass of 136 GeV, in GMSB models with N5 = 3, messenger = 250 TeV, sign(mu) = 1 and tan beta = 5. Electroweak production of sleptons is excluded up to a mass of 110 GeV. Gluino R-hadrons in a generic interaction model are excluded up to masses of 530 GeV to 544 GeV depending on the fraction of R-hadrons produced as gluino-balls
description: 9 pages plus author list (21 pages total), 4 figures, 4 tables, final version as it appears in Physics Letters B
On the Meissner Effect of the Odd-Frequency Superconductivity with Critical Spin Fluctuations: Possibility of Zero Field FFLO pairing
Creators: name: Fuseya, Yuki
name: Miyake, Kazumasa
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the influence of critical spin fluctuations on electromagnetic responses in the odd-frequency superconductivity. It is shown that the Meissner kernel of the odd-frequency superconductivity is strongly reduced by the critical spin fluctuation or the massless spin wave mode in the antiferromagnetic phase. These results imply that the superfluid density is reduced, and the London penetration depth is lengthened for the odd-frequency pairing. It is also shown that the zero field Flude-Ferrell-Larkin-Ovchinnikov pairing is spontaneously realized both for even- and odd-frequency in the case of sufficiently strong coupling with low lying spin-modes.
description: 10 pages, 7 figures
title: Als die VÖB Konsortienstelle spielte oder die Raffinesse des Hintertürls
title: Statement
Creators: name: Hartmann, Helmut
Publisher: name: Universität Graz
Year: 2021

description: 75 Jahre VÖB. 1946–2021, Hg. v. Alker-Windbichler, Bauer und Köstner-Pemsel, 2021, S. 351–354
Lax equations and Knizhnik-Zamolodchikov connection
Creators: name: Sheinman, Oleg K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Representation Theory (math.RT)
subject: Mathematical Physics (math-ph)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17B66, 17B67, 14H10, 14H15, 14H55, 30F30, 81R10, 81T40

description: Given a Lax system of equations with the spectral parameter on a Riemann surface we construct a projective unitary representation of the Lie algebra of Hamiltonian vector fields by Knizhnik-Zamolodchikov operators. This provides a prequantization of the Lax system. The representation operators of Poisson commuting Hamiltonians of the Lax system projectively commute. If Hamiltonians depend only on action variables then the corresponding operators commute.
description: 21 pages. Corrected misprints. Some arguments revised, results unchanged
PHENIX photons and dileptons
Creators: name: Sakaguchi, Takao
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Electro-magnetic probes such as dileptons and photons are strong probes to investigate the thermodynamical state of the early stages of collisions since they leave the system unscathed. The PHENIX experiment has measured both photons and dileptons in p+p, d+Au and Au+Au collisions. An excess of dilepton yield over the expected hadronic contribution is seen in 0.2-0.8\,GeV/$c^2$ in Au+Au collisions, which is prominent in lower $p_T$ and most central. Direct photons are measured through their internal conversion to electron pairs. We saw a large enhancement in Au+Au collisions over p+p yield scaled by the number of binary collisions. It turned out from the latest results on d+Au collisions that this enhancement is not explainable by a nuclear effect.
description: Proceedings for HardProbe 2010 conference held at Eilat, Israel in Oct 10-15, 2010
The Mixed State of a $π$-Striped Superconductor
Creators: name: Zelli, M.
name: Kallin, Catherine
name: Berlinsky, A. John
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A model of an anti-phase modulated d-wave superconductor has been proposed to describe the decoupling between Cu-O planes in 1/8 doped La$_{2-x}$Ba$_{x}$CuO$_{4}$. Unlike a uniform d-wave superconductor, this model exhibits an extended Fermi surface. Within Bogoliubov-de Gennes theory, we study the mixed state of this model and compare it to the case of a uniform d-wave superconductor. We find a periodic structure of the low-energy density of states, with a period that is proportional to $B$, corresponding to Landau levels that are a coherent mixture of particles and holes. These results are also discussed in the context of experiments which observe quantum oscillations in the cuprates, and are compared to those for models in which the Fermi surface is reconstructed due to translational symmetry breaking in the non-superconducting state and to a model of a Fermi-arc metal.
Fractional generalizations of Young and Brunn-Minkowski inequalities
Creators: name: Bobkov, Sergey
name: Madiman, Mokshay
name: Wang, Liyao
Publisher: name: arXiv
Year: 2010
Subjects: subject: Functional Analysis (math.FA)
subject: Information Theory (cs.IT)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: A generalization of Young's inequality for convolution with sharp constant is conjectured for scenarios where more than two functions are being convolved, and it is proven for certain parameter ranges. The conjecture would provide a unified proof of recent entropy power inequalities of Barron and Madiman, as well as of a (conjectured) generalization of the Brunn-Minkowski inequality. It is shown that the generalized Brunn-Minkowski conjecture is true for convex sets; an application of this to the law of large numbers for random sets is described.
description: 19 pages, numerous typos corrected, exposition improved, and references added, but no other substantial changes
[Letter, 1842 October 3, Montgomery Square] : [manuscript]
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 1842
Subjects: Marriage celebrants.

description: Autograph letter signed, from Silas H. Land, to an unnamed official requesting the performance of a marriage on Thursday, Oct. 1842, and requesting a reply be sent to Montgomery Square by way of Ezra Price, a stage driver who drives between Morristown, N.J. and Doylestown, Pa