cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Trace formula for the magnetic Laplacian
Creators: name: Kordyukov, Yuri A.
name: Taimanov, Iskander A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The Guillemin-Uribe trace formula is a semiclassical version of the Selberg trace formula and more general Duistermaat-Guillemin formula for elliptic operators on compact manifolds, which reflects the dynamics of magnetic geodesic flows in terms of eigenvalues of a natural differential operator (the magnetic Laplacian) associated with the magnetic field. In this paper, we give a survey of basic notions and results related with the Guillemin-Uribe trace formula and provide concrete examples of its computation for two-dimensional constant curvature surfaces with constant magnetic fields and for the Katok example.
description: 37 pages, v2: minor corrections, references added
How loud are neutron star mergers?
Creators: name: Bernuzzi, Sebastiano
name: Radice, David
name: Ott, Christian D.
name: Roberts, Luke F.
name: Moesta, Philipp
name: Galeazzi, Filippo
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present results from the first large parameter study of neutron star mergers using fully general relativistic simulations with finite-temperature microphysical equations of state and neutrino cooling. We consider equal and unequal-mass binaries drawn from the galactic population and simulate each binary with three different equations of state. Our focus is on the emission of energy and angular momentum in gravitational waves in the postmerger phase. We find that the emitted gravitational-wave energy in the first $\sim$$10\,\mathrm{ms}$ of the life of the resulting hypermassive neutron star (HMNS) is about twice the energy emitted over the entire inspiral history of the binary. The total radiated energy per binary mass is comparable to or larger than that of nonspinning black hole inspiral-mergers. About $0.8-2.5\%$ of the binary mass-energy is emitted at kHz frequencies in the early HMNS evolution. We find a clear dependence of the postmerger GW emission on binary configuration and equation of state and show that it can be encoded as a broad function of the binary tidal coupling constant $κ^T_2$. Our results also demonstrate that the dimensionless spin of black holes resulting from subsequent HMNS collapse are limited to $\lesssim0.7-0.8$. This may significantly impact the neutrino pair annihilation mechanism for powering short gamma-ray bursts (sGRB).
description: 6 pages, 3 figures. Waveforms available at https://zenodo.org/record/57844
Comment on "Topological Nodal-Net Semimetal in a Graphene Network Structure"
Creators: name: Song, Tielei
name: Liu, Zhifeng
name: Cui, Xin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recently, a distinct topological semimetal, nodal-net semimetal, has been identified by Wang et al. through ab initio calculations [Phys. Rev. Lett. 120, 026402 (2018)]. The authors claimed that a new body-centered tetragonal carbon allotrope with I4/mmm symmetry, termed bct-C40, can host this novel state exhibiting boxed-astrisk shaped nodal nets. In this Comment, we demonstrate that bct-C40 is in fact a nodal surface semimetal, the concept of which has been proposed as early as 2016 [Phys. Rev. B 93, 085427 (2016)].
description: Although the quasi-nodal surface has been identified in our preprint, there is a tiny band gap (millivolt-level) in the non high symmetry k-line (e.g.,K1-K5). In this regard, the proposed bct-C40 should be a nodal net semimetal based on the strict definition of topological semimetal. We would like to withdraw this work to avoid misleading the readers from Arxiv
Heavy-quark spin symmetry partners of the $X(3872)$ revisited
Creators: name: Baru, V.
name: Epelbaum, E.
name: Filin, A. A.
name: Hanhart, C.
name: Meißner, Ulf-G.
name: Nefediev, A. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We revisit the consequences of the heavy-quark spin symmetry for the possible spin partners of the $X(3872)$. We confirm that, if the $X(3872)$ were a $D\bar{D}^*$ molecular state with the quantum numbers $J^{PC}=1^{++}$, then in the strict heavy-quark limit there should exist three more hadronic molecules degenerate with the $X(3872)$, with the quantum numbers $0^{++}$, $1^{+-}$, and $2^{++}$ in line with previous results reported in the literature. We demonstrate that this result is robust with respect to the inclusion of the one-pion exchange interaction between the $D$ mesons. However, this is true only if all relevant partial waves as well as particle channels which are coupled via the pion-exchange potential are taken into account. Otherwise, the heavy-quark symmetry is destroyed even in the heavy-quark limit. Finally, we solve the coupled-channel problem in the $2^{++}$ channel with nonperturbative pions beyond the heavy-quark limit and, contrary to the findings of previous calculations with perturbative pions, find for the spin-2 partner of the $X(3872)$ a significant shift of the mass as well as a width of the order of 50 MeV.
description: 17 pages, 3 figures, 1 table, version published in Phys.Lett.B
Low degree points on curves
Creators: name: Smith, Geoffrey
name: Vogt, Isabel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11G30, 14H51

description: In this paper we investigate an arithmetic analogue of the gonality of a smooth projective curve $C$ over a number field $k$: the minimal $e$ such there are infinitely many points $P \in C(\bar{k})$ with $[k(P):k] \leq e$. Developing techniques that make use of an auxiliary smooth surface containing the curve, we show that this invariant can take any value subject to constraints imposed by the gonality. Building on work of Debarre--Klassen, we show that this invariant is equal to the gonality for all sufficiently ample curves on a surface $S$ with trivial irregularity.
description: 15 pages. Final version, in IMRN (2022)
A decomposition of equivariant K-theory in twisted equivariant K-theories
Creators: name: Gómez, José Manuel
name: Uribe, Bernardo
Publisher: name: arXiv
Year: 2016
Subjects: subject: K-Theory and Homology (math.KT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 19L47

description: For G a finite group and X a G-space on which a normal subgroup A acts trivially, we show that the G-equivariant K-theory of X decomposes as a direct sum of twisted equivariant K-theories of X parametrized by the orbits of the conjugation action of G on the irreducible representations of A. The twists are group 2-cocycles which encode the obstruction of lifting an irreducible representation of A to the subgroup of G which fixes the isomorphism class of the irreducible representation.
description: Shorter version version. 20 pages. Accepted for publication in IJM
Krumwiede, Hans-Walter (Hrsg.): Evangelische Kirche und Theologie in der Weimarer Republik
Creators: name: Padberg, Lutz Von
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1822649900
description: Jahrbuch für evangelikale Theologie, V. 4 (1990): Jahrbuch für evangelikale Theologie, Band 4
Local realistic interpretation of entangled photon pairs in the Weyl-Wigner formalism
Creators: name: Santos, Emilio
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A polarization correlation experiment with two maximally entangled photons created by spontaneous parametric down-conversion is studied in the Weyl-Wigner formalism, that reproduces the quantum predictions. An interpretation is proposed in terms of stochastic processes assuming that the quantum vacuum fields are real. This proves that local realism is compatible with the violation of Bell inequalities, thus rebutting the claim that local realism has been refuted by entangled photon experiments. Entanglement appears as a correlation between fluctuations of a signal field and vacuum fields.
description: 19 pages. Errors corrected. arXiv admin note: text overlap with arXiv:1905.08238
Bjorken flow in one-dimensional relativistic magnetohydrodynamics with magnetization
Creators: name: Pu, Shi
name: Roy, Victor
name: Rezzolla, Luciano
name: Rischke, Dirk H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the one-dimensional, longitudinally boost-invariant motion of an ideal fluid with infinite conductivity in the presence of a transverse magnetic field, i.e., in the ideal transverse magnetohydrodynamical limit. In an extension of our previous work Roy et al., [Phys. Lett. B 750, 45 (2015)], we consider the fluid to have a non-zero magnetization. First, we assume a constant magnetic susceptibility $χ_{m}$ and consider an ultrarelativistic ideal gas equation of state. For a paramagnetic fluid (i.e., with $χ_{m}>0$), the decay of the energy density slows down since the fluid gains energy from the magnetic field. For a diamagnetic fluid (i.e., with $χ_{m}<0$), the energy density decays faster because it feeds energy into the magnetic field. Furthermore, when the magnetic field is taken to be external and to decay in proper time $τ$ with a power law $\simτ^{-a}$, two distinct solutions can be found depending on the values of $a$ and $χ_m$. Finally, we also solve the ideal magnetohydrodynamical equations for one-dimensional Bjorken flow with a temperature-dependent magnetic susceptibility and a realistic equation of state given by lattice-QCD data. We find that the temperature and energy density decay more slowly because of the non-vanishing magnetization. For values of the magnetic field typical for heavy-ion collisions, this effect is, however, rather small. Only for magnetic fields which are about an order of magnitude larger than expected for heavy-ion collisions, the system is substantially reheated and the lifetime of the quark phase might be extended.
description: 12 pages, 9 figures; minor revisions, two references added, journal version accepted by PRD
Magnetic States, Correlation Effects and Metal-Insulator Transition in FCC Lattice
Creators: name: Timirgazin, M. A.
name: Igoshev, P. A.
name: Arzhnikov, A. K.
name: Irkhin, V. Yu.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The ground-state magnetic phase diagram (including collinear and spiral states) of the single-band Hubbard model for the face-centered cubic lattice and related metal-insulator transition (MIT) are investigated within the slave-boson approach by Kotliar and Ruckenstein. The correlation induced electronic spectrum narrowing and a comparison with a generalized Hartree-Fock approximation allow one to estimate the strength of correlation effects. This, as well as the MIT scenario, depends dramatically on the ratio of the next-nearest and nearest electron hopping integrals $t'/t$. In contrast with metallic state, possessing strong band narrowing, insulator one is only weakly correlated. The magnetic (Slater) scenario of MIT is found to be superior over the Mott one. Unlike simple and body-centered cubic lattices, MIT is the first order transition for most $t'/t$. The insulator state is type-II or type-III antiferromagnet, and the metallic state is spin-spiral, collinear antiferromagnet or paramagnet depending on $t'/t$. The picture of magnetic ordering is compared with that in the standard localized-electron (Heisenberg) model.
description: 10 pages, final version, Journal of Physics: Condensed Matter
Solution to sign problems in models of interacting fermions and quantum spins
Creators: name: Huffman, Emilie
name: Chandrasekharan, Shailesh
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We show that solutions to fermion sign problems in the CT-INT formulation can be extended to systems involving fermions interacting with dynamical quantum spins. While these sign problems seem unsolvable in the auxiliary field approach, solutions emerge in the worldline representation of quantum spins. Combining the idea with meron-cluster methods, we are able to extend the solvable models even further. We demonstrate these novel solutions to sign problems by considering several examples of strongly correlated systems.
description: 9 pages, 4 figures
Period differential equations for the families of $K3$ surfaces with $2$ parameters derived from the reflexive polytopes
Creators: name: Nagano, Atsuhira
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: In this paper, we study the period mappings for the families of $K3$ surfaces derived from the $3$-dimensional $5$-verticed reflexive polytopes. We determine the lattice structures, the period differential equations and the projective monodromy groups. Moreover, we show that one of our period differential equations coincides with the unifomizing differential equation of the Hilbert modular orbifold for the field $\mathbb{Q}(\sqrt{5})$.
description: 43 pages, 6 figures. This paper was published in March 2012. But, on Proposition 4.1 and Theorem 4.1, there exist some typos. Here, these errors are corrected. On 5 September 2016, typos in page 28 are corrected. arXiv admin note: substantial text overlap with arXiv:1009.5725, arXiv:1001.5312, arXiv:1012.0156
Diffeomorphism type via aperiodicity in Reeb dynamics
Creators: name: Kwon, Myeonggi
name: Wiegand, Kevin
name: Zehmisch, Kai
Publisher: name: arXiv
Year: 2019
Subjects: subject: Symplectic Geometry (math.SG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 53D35 (primary) 37C27, 37J55, 57R17 (secondary)

description: We characterise boundary shaped disc like neighbourhoods of certain isotropic submanifolds in terms of aperiodicity of Reeb flows. We prove uniqueness of homotopy and diffeomorphism type of such contact manifolds assuming non-existence of short periodic Reeb orbits.
Fractal Impedance for Passive Controllers: A Framework for Interaction Robotics
Creators: name: Babarahmati, Keyhan Kouhkiloui
name: Tiseo, Carlo
name: Smith, Joshua
name: Lin, Hsiu Chin
name: Erden, Mustafa Suphi
name: Mistry, Michael
Publisher: name: arXiv
Year: 2019
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: There is increasing interest in control frameworks capable of moving robots from industrial cages to unstructured environments and coexisting with humans. Despite significant improvement in some specific applications (e.g., medical robotics), there is still the need for a general control framework that improves interaction robustness and motion dynamics. Passive controllers show promising results in this direction; however, they often rely on virtual energy tanks that can guarantee passivity as long as they do not run out of energy. In this paper, a Fractal Attractor is proposed to implement a variable impedance controller that can retain passivity without relying on energy tanks. The controller generates a Fractal Attractor around the desired state using an asymptotic stable potential field, making the controller robust to discretization and numerical integration errors. The results prove that it can accurately track both trajectories and end-effector forces during interaction. Therefore, these properties make the controller ideal for applications requiring robust dynamic interaction at the end-effector.
description: Nonlinear Dyn (2022). Video Available at https://youtu.be/Ny8zNyPS8AM
Radiative Model of Neutrino Mass with Neutrino Interacting MeV Dark Matter
Creators: name: Arhrib, Abdesslam
name: Bœhm, Céline
name: Ma, Ernest
name: Yuan, Tzu-Chiang
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the radiative generation of neutrino mass through the interactions of neutrinos with MeV dark matter. We construct a realistic renormalizable model with one scalar doublet and one complex singlet together with three light singlet Majorana fermions, all transforming under a dark U(1) symmetry which breaks softly to Z_2. We study in detail the scalar sector which supports this specific scenario and its rich phenomenology.
description: 34 pages, 4 figures, references added, journal version published in JCAP
Classifying the behavior of noncanonical quintessence
Creators: name: Li, Dan
name: Scherrer, Robert J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive general conditions for the existence of stable scaling solutions for the evolution of noncanonical quintessence, with a Lagrangian of the form $\mathcal{L}(X,ϕ)=X^α-V(ϕ)$, for power-law and exponential potentials when the expansion is dominated by a background barotropic fluid. Our results suggest that in most cases, noncanonical quintessence with such potentials does not yield interesting models for the observed dark energy. When the scaling solution is not an attractor, there is a wide range of model parameters for which the evolution asymptotically resembles a zero-potential solution with equation of state parameter $w = 1/(2α-1)$, and oscillatory solutions are also possible for positive power-law potentials; we derive the conditions on the model parameters which produce both types of behavior. We investigate thawing noncanonical models with a nearly-flat potential and derive approximate expressions for the evolution of $w(a)$. These forms for $w(a)$ differ in a characteristic way from the corresponding expressions for canonical quintessence.
description: 6 pages, 1 figure, minor clarifications and corrections
The Effect of Next-Nearest Neighbour Hopping in the One, Two, and Three Dimensional Holstein Model
Creators: name: Chandler, Carl J.
name: Prosko, Christian
name: Marsiglio, F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Allowing a single electron to hop to next-nearest neighbours (NNN) in addition to the closest atomic sites in the Holstein model, a modified Trugman method is applied to exactly calculate the effect on the polaronic effective mass in one, two, and three dimensions, building on the previous study of the one-dimensional NNN Holstein model. We also present perturbative calculations and a heuristic scaling factor for the coupling strength and ion frequency to nearly map the NNN Holstein model back onto the original Holstein model. When account is taken of the modified electronic bandwidth near the electron energy, we find that including NNN hopping effectively increases the polaron effective mass.
description: 9 pages, 8 figures, published version --- see http://www.nature.com/articles/srep32591
MARVEL - D7.2: Market Analysis and Preliminary Business Modelling
Creators: name: González, Elena
Publisher: name: Zenodo
Year: 2021
Subjects: smart cities
market analysis
market definition
competitors
stakeholders
business models
PEST
SWOT

description: This deliverable presents the work performed in WP7, Task7.1 “Market Definition and Analysis” that supports the activities of T1.1, by determining the market context of MARVEL and the relevant business and societal challenges. Moreover, it will conduct a comprehensive market study using different analytical tools as necessary (PEST and SWOT analysis, questionnaires, annual company reports, analysis reports, etc.). This study will quantify the size of the market, identify key competitors, market needs and trends, identify stakeholders, possible clients and users, and formulate potential business models to exploit project outcomes. It will also drive both the business and the technical activities of the ecosystem and prepare for the long-term sustainability and potential commercialisation uptake to the primary market segments.
Exploring soft constraints on effective actions
Creators: name: Bianchi, Massimo
name: Guerrieri, Andrea L.
name: Huang, Yu-tin
name: Lee, Chao-Jung
name: Wen, Congkao
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study effective actions for simultaneous breaking of space-time and internal symmetries. Novel features arise due to the mixing of Goldstone modes under the broken symmetries which, in contrast to the usual Adler's zero, leads to non-vanishing soft limits. Such scenarios are common for spontaneously broken SCFT's. We explicitly test these soft theorems for $\mathcal{N}=4$ sYM in the Coulomb branch both perturbatively and non-perturbatively. We explore the soft constraints systematically utilizing recursion relations. In the pure dilaton sector of a general CFT, we show that all amplitudes up to order $s^{n} \sim \partial^{2n}$ are completely determined in terms of the $k$-point amplitudes at order $s^k$ with $k \leq n$. Terms with at most one derivative acting on each dilaton insertion are completely fixed and coincide with those appearing in the conformal DBI, i.e. DBI in AdS. With maximal supersymmetry, the effective actions are further constrained, leading to new non-renormalization theorems. In particular, the effective action is fixed up to eight derivatives in terms of just one unknown four-point coefficient and one more coefficient for ten-derivative terms. Finally, we also study the interplay between scale and conformal invariance in this context.
description: 20+4 pages, 1 figure; v2: references added, typos corrected; v3: typos corrected, JHEP version
Scalable Group Secret Key Generation over Wireless Channels
Creators: name: Altun, Ufuk
name: Basaran, Semiha T.
name: Kurt, Gunes K.
name: Ozdemir, Enver
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cryptography and Security (cs.CR)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we consider the problem of secret key generation for multiple parties. Multi-user networks usually require a trusted party to efficiently distribute keys to the legitimate users and this process is a weakness against eavesdroppers. With the help of the physical layer security techniques, users can securely decide on a secret key without a trusted party by exploiting the unique properties of the channel. In this context, we develop a physical layer group key generation scheme that is also based on the ideas of the analog function computation studies. We firstly consider the key generation as a function to be computed over the wireless channel and propose two novel methods depending on the users transmission capability (i.e. half-duplex and full-duplex transmissions). Secondly, we exploit the uniqueness of the prime integers in order to enable the simultaneous transmission of the users for key generation. As a result, our approach contributes to the scalability of the existing physical layer key generation algorithms since all users transmit simultaneously rather than using pairwise communications. We prove that our half-duplex network model reduces the required number of communications for group key generation down to a linear scale. Furthermore, the full-duplex network model reduces to a constant scale.
description: 11 pages, 7 figures
Invertible Gaussian Reparameterization: Revisiting the Gumbel-Softmax
Creators: name: Potapczynski, Andres
name: Loaiza-Ganem, Gabriel
name: Cunningham, John P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The Gumbel-Softmax is a continuous distribution over the simplex that is often used as a relaxation of discrete distributions. Because it can be readily interpreted and easily reparameterized, it enjoys widespread use. We propose a modular and more flexible family of reparameterizable distributions where Gaussian noise is transformed into a one-hot approximation through an invertible function. This invertible function is composed of a modified softmax and can incorporate diverse transformations that serve different specific purposes. For example, the stick-breaking procedure allows us to extend the reparameterization trick to distributions with countably infinite support, thus enabling the use of our distribution along nonparametric models, or normalizing flows let us increase the flexibility of the distribution. Our construction enjoys theoretical advantages over the Gumbel-Softmax, such as closed form KL, and significantly outperforms it in a variety of experiments. Our code is available at https://github.com/cunningham-lab/igr.
description: Accepted at NeurIPS 2020
Topological recursion for monotone orbifold Hurwitz numbers: a proof of the Do-Karev conjecture
Creators: name: Kramer, Reinier
name: Popolitov, Alexandr
name: Shadrin, Sergey
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 14H10, 05A15, 14N10

description: We prove the conjecture of Do and Karev that the monotone orbifold Hurwitz numbers satisfy the Chekhov-Eynard-Orantin topological recursion.
description: 11 pages. V2: Updated grant acknowledgments of A.P. and mail address of R.K. V3: Improved exposition
Higher Order QCD predictions for Associated Higgs production with anomalous couplings to gauge bosons
Creators: name: Mimasu, Ken
name: Sanz, Veronica
name: Williams, Ciaran
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present predictions for the associated production of a Higgs boson at NLO+PS accuracy, including the effect of anomalous interactions between the Higgs and gauge bosons. We present our results in different frameworks, one in which the interaction vertex between the Higgs boson and Standard Model $W$ and $Z$ bosons is parameterized in terms of general Lorentz structures, and one in which Electroweak symmetry breaking is manifestly linear and the resulting operators arise through a six-dimensional effective field theory framework. We present analytic calculations of the Standard Model and Beyond the Standard Model contributions, and discuss the phenomenological impact of the higher order pieces. Our results are implemented in the NLO Monte Carlo program MCFM, and interfaced to shower Monte Carlos through the {\sc Powheg} box framework.
description: 24 pages, 10 figures, v2 matches published version, includes fixes to figures and text and added discussion of effect of the EFT operators on EW parameters
Characterization of generalized Young measures generated by symmetric gradients
Creators: name: De Philippis, Guido
name: Rindler, Filip
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 49J45 (primary), 28B05, 46G10

description: This work establishes a characterization theorem for (generalized) Young measures generated by symmetric derivatives of functions of bounded deformation (BD) in the spirit of the classical Kinderlehrer-Pedregal theorem. Our result places such Young measures in duality with symmetric-quasiconvex functions with linear growth. The "local" proof strategy combines blow-up arguments with the singular structure theorem in BD (the analogue of Alberti's rank-one theorem in BV), which was recently proved by the authors. As an application of our characterization theorem we show how an atomic part in a BD-Young measure can be split off in generating sequences.
description: 34 pages
Quasiclassical approximation for magnetic monopoles
Creators: name: Kordyukov, Yuri A.
name: Taimanov, Iskander A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: A quasiclassical approximation is constructed to describe the eigenvalues of the magnetic Laplacian on a compact Riemannian manifold in the case when the magnetic field is not given by an exact 2-form. For this, the multidimensional WKB method in the form of Maslov canonical operator is applied. In this case, the canonical operator takes values in sections of a nontrivial line bundle. The constructed approximation is demonstrated for the Dirac magnetic monopole on the two-dimensional sphere.
description: 18 pages, v2: minor revisions
Panel - Emerging publishing models
Creators: name: Gaillard, Vinciane
name: Kulczycki, Emanuel
name: de la Cueva, Javier
name: Torny, Didier
Publisher: name: Zenodo
Year: 2023
Subjects: Scholarly Publishing, Open Access, Open Science, Scholarly Communication

description: Academic communication plays a pivotal role in ensuring the smooth functioning of science and technology systems. It operates through two distinct paradigms - the robust, highly profitable publishing industry backed by major conglomerates, and the non-commercial model championed by universities, public research centers, scientific societies, and non-profit organizations. The coexistence of these options is sustained by public funds dedicated to research and development (R&D) and university library budgets, with each embodying a unique approach to ensuring the sustainability of our research systems. This session seeks to delve deep into the intricacies of the scientific information market, shedding light on how these divergent models interact with the principles of open science. By examining their impacts, we will better understand the dynamics of academic communication and its implications for fostering a more inclusive and sustainable research landscape. Join us as we explore the transformative potential of open science practices in reshaping the future of academic communication. Key topics of this panel session will include: Diamond academic publishing model Challenges and opportunities for multilingual publishing: language barriers, translation technologies, and cultural nuances. The multifaceted dimensions of sustainability in the ever-evolving knowledge communication ecosystem. Research infrastructures and open software emerged as pivotal elements in reshaping the academic publishing landscape.
Hourglass Fermions
Creators: name: Wang, Zhijun
name: Alexandradinata, A.
name: Cava, R. J.
name: Bernevig, B. Andrei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spatial symmetries in crystals are distinguished by whether they preserve the spatial origin. We show how this basic geometric property gives rise to a new topology in band insulators. We study spatial symmetries that translate the origin by a fraction of the lattice period, and find that these nonsymmorphic symmetries protect a novel surface fermion whose dispersion is shaped like an hourglass; surface bands connect one hourglass to the next in an unbreakable zigzag pattern. These exotic fermions are materialized in the large-gap insulators: KHgX (X=As,Sb,Bi), which we propose as the first material class whose topology relies on nonsymmorphic symmetries. Beside the hourglass fermion, another surface of KHgX manifests a 3D generalization of the quantum spin Hall effect, which has only been observed in 2D crystals. To describe the bulk topology of nonsymmorphic crystals, we propose a non-Abelian generalization of the geometric theory of polarization. Our nontrivial topology originates from an inversion of the rotational quantum numbers, which we propose as a fruitful criterion in the search for topological materials.
description: Published in Nature 532,189-194 (14 April 2016). Press release can be found here: http://www.eurekalert.org/pub_releases/2016-04/pu-est041316.php
Cohomology of automorphism groups of free groups with twisted coefficients
Creators: name: Randal-Williams, Oscar
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Topology (math.AT)
subject: Geometric Topology (math.GT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20F28, 20J06, 57R20

description: We compute the groups $H^*(\mathrm{Aut}(F_n); M)$ and $H^*(\mathrm{Out}(F_n); M)$ in a stable range, where $M$ is obtained by applying a Schur functor to $H_\mathbb{Q}$ or $H^*_\mathbb{Q}$, respectively the first rational homology and cohomology of $F_n$. For reasons which are not conceptually clear, taking coefficients in $H_\mathbb{Q}$ and its related modules behaves in a far less trivial way than taking coefficients in $H^*_\mathbb{Q}$ and its related modules. The answer may be described in terms of stable multiplicities of irreducibles in the plethysm $\mathrm{Sym}^k \circ \mathrm{Sym}^l$ of symmetric powers. We also compute the stable integral cohomology groups of $\mathrm{Aut}(F_n)$ with coefficients in $H$ or $H^*$, respectively the first integral homology and cohomology of $F_n$, and compute the stable cohomology with coefficients in Schur functors of $H$ or $H^*$ modulo small primes.
description: 20 pages. Supersedes arXiv:1012.1433. v2 21 pages, to appear in Selecta Mathematica
Dead or Alive? Implications of the Muon Anomalous Magnetic Moment for 3-3-1 Models
Creators: name: de Jesus, Alvaro S.
name: Kovalenko, Sergey
name: Queiroz, Farinaldo S.
name: Pires, Carlos A. de S.
name: Villamizar, Yoxara S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have witnessed a persistent puzzling anomaly in the muon magnetic moment that cannot be accounted for in the Standard Model even considering the large hadronic uncertainties. A new measurement is forthcoming, and it might give rise to a $5σ$ claim for physics beyond the Standard Model. Motivated by it, we explore the implications of this new result to five models based on the $SU(3)_C \times SU(3)_L \times U(1)_N$ gauge symmetry and put our conclusions into perspective with LHC bounds. We show that previous conclusions found in the context of such models change if there are more than one heavy particle running in the loop. Moreover, having in mind the projected precision aimed by the g-2 experiment at FERMILAB, we place lower mass bounds on the particles that contribute to muon anomalous magnetic moment assuming the anomaly is resolved otherwise. Lastly, we discuss how these models could accommodate such anomaly in agreement with existing bounds.
description: 14 pages, 12 figures
Searching for hidden-charm baryonium signals in QCD sum rules
Creators: name: Chen, Hua-Xing
name: Zhou, Dan
name: Chen, Wei
name: Liu, Xiang
name: Zhu, Shi-Lin
Publisher: name: arXiv
Year: 2016
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 give an explicit QCD sum rule investigation to hidden-charm baryonium states with the quark content $u\bar u d\bar d c\bar c$, spin $J=0/1/2/3$, and of both positive and negative parities. We systematically construct the relevant local hidden-charm baryonium interpolating currents, which can actually couple to various structures, including hidden-charm baryonium states, charmonium states plus two pions, and hidden-charm tetraquark states plus one pion, etc. We do not know which structure these currents couple to at the beginning, but after sum rule analyses we can obtain some information. We find some of them can couple to hidden-charm baryonium states, using which we evaluate the masses of the lowest-lying hidden-charm baryonium states with quantum numbers $J^P=2^-/3^-/0^+/1^+/2^+$ to be around 5.0 GeV. We suggest to search for hidden-charm baryonium states, especially the one of $J=3^-$, in the $D$-wave $J/ψππ$ and $P$-wave $J/ψρ$ and $J/ψω$ channels in this energy region.
description: 7 pages, 5 figures, 1 table. Accepted by Eur. Phys. J. C
Supervised Learning with Quantum Measurements
Creators: name: González, Fabio A.
name: Vargas-Calderón, Vladimir
name: Vinck-Posada, Herbert
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: This paper reports a novel method for supervised machine learning based on the mathematical formalism that supports quantum mechanics. The method uses projective quantum measurement as a way of building a prediction function. Specifically, the relationship between input and output variables is represented as the state of a bipartite quantum system. The state is estimated from training samples through an averaging process that produces a density matrix. Prediction of the label for a new sample is made by performing a projective measurement on the bipartite system with an operator, prepared from the new input sample, and applying a partial trace to obtain the state of the subsystem representing the output. The method can be seen as a generalization of Bayesian inference classification and as a type of kernel-based learning method. One remarkable characteristic of the method is that it does not require learning any parameters through optimization. We illustrate the method with different 2-D classification benchmark problems and different quantum information encodings.
description: Supplementary material integrated into main text. Typos corrected
Impurity entropy of junctions of multiple quantum wires
Creators: name: Shi, Zheng
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We calculate the zero-temperature impurity entropy of a junction of multiple quantum wires of interacting spinless fermions. Starting from a given single-particle S-matrix representing a fixed point of the renormalization group (RG) flows, we carry out fermionic perturbation theory in the bulk interactions, with the perturbation series summed in the random phase approximation (RPA). The results agree completely with boundary conformal field theory (BCFT) predictions of the ground state degeneracy, and also with known RG flows through the g-theorem.
description: 21 pages, 4 figures
Schnabel, Wolfgang: Grundwissen zur Theologie- und Kirchengeschichte
Creators: name: Padberg, Lutz Von
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1822647339
description: Jahrbuch für evangelikale Theologie, V. 4 (1990): Jahrbuch für evangelikale Theologie, Band 4
On the connection between the Goldbach conjecture and the Elliott-Halberstam conjecture
Creators: name: Huang, Jing-Jing
name: Li, Huixi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: In this paper we prove that the binary Goldbach conjecture for sufficiently large even integers would follow under the assumption that both the Elliott-Halberstam conjecture and a variant of the Elliott-Halberstam conjecture twisted by the Möbius function hold, in which the sum of their levels of distribution exceeds 1. This continues the work of Pan in 1982. An analogous result for the twin prime conjecture is obtained by Ram Murty and Vatwani in 2017.
description: title changed, typos corrected, https://doi.org/10.1007/978-3-030-67996-5_17
Two-dimensional Fröhlich interaction in transition-metal dichalcogenide monolayers: Theoretical modeling and first-principles calculations
Creators: name: Sohier, Thibault
name: Calandra, Matteo
name: Mauri, Francesco
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We perform ab initio calculations of the coupling between electrons and small-momentum polar-optical phonons in monolayer transition metal dichalcogenides of the 2H type: MoS2, MoSe2, MoTe2, WS2, and WSe2. The so-called Fröhlich interaction is fundamentally affected by the dimensionality of the system. In a plane-wave framework with periodic boundary conditions, this coupling is affected by the spurious interaction between the 2D material and its periodic images. To overcome this, we perform density functional perturbation theory calculations with a truncated Coulomb interaction in the out-of-plane direction. We show that the 2D Fröhlich interaction is much stronger than assumed in previous ab initio studies. We provide analytical models depending on the effective charges and dielectric properties of the materials to interpret our ab initio calculations. Screening is shown to play a fundamental role in the phonon-momentum dependency of the polar-optical coupling, with a crossover between two regimes depending on the dielectric properties of the material relative to its environment. The Fröhlich interaction is screened by the dielectric environment in the limit of small phonon momenta and sharply decreases due to stronger screening by the monolayer at finite momenta. The small-momentum regime of the ab initio Fröhlich interaction is reproduced by a simple analytical model, for which we provide the necessary parameters. At larger momenta, however, direct ab initio calculations of electron-phonon interactions are necessary to capture band-specific effects. We compute and compare the carrier relaxation times associated to the scattering by both LO and A1 phonon modes. While both modes are capable of relaxing carriers on timescales under the picosecond at room temperature, their absolute and relative importance vary strongly depending on the material, the band, and the substrate.
description: 14 pages, 8 figures
Towards Causal Inference for Spatio-Temporal Data: Conflict and Forest Loss in Colombia
Creators: name: Christiansen, Rune
name: Baumann, Matthias
name: Kuemmerle, Tobias
name: Mahecha, Miguel D.
name: Peters, Jonas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: In many data scientific problems, we are interested in inferring causal relationships in the data generating mechanism. Here, we consider the following real-world question: how has the Colombian conflict influenced tropical forest loss? There is evidence for both enhancing and reducing impacts. Answering such questions requires the use of causal models. In this work, we propose a class of causal models for spatio-temporal stochastic processes. It allows us to formally define and quantify the causal effect of a vector of covariates $X$ on a real-valued response $Y$, even if the causal background knowledge is incomplete. We introduce a procedure for estimating causal effects, and a non-parametric hypothesis test for these effects being zero. The proposed methods do not make strong distributional assumptions, and allow for arbitrarily many latent confounders, given that these confounders do not vary across time (or, alternatively, they do not vary across space). When applying our causal methodology to the problem of conflict and forest loss, using data from 2000 to 2018, we find a reducing but insignificant causal effect of conflict on forest loss. Regionally, both enhancing and reducing effects can be identified. Our theoretical findings are supported by simulations, and code is available online.
description: 33 pages, 11 figures
Regenerative Fuel Cell System technologies development
Creators: name:  CEDRIC DUPONT
name:   LUC LITTRE
name:   PASCAL BARBIER
name:   ALEXIS PAILLET
name:   GREGORY NAVARRO
Publisher: name: Proceedings of the Aerospace Europe Conference - EUCASS - CEAS - 2023
Year: 2023
Subjects: FUEL CELL
ELECTROLYZER
ENERGY STORAGE
MOON

description: Before 2030 the moon Moon should see a return of humans on its soil. This time the aim will be to on our closest satellite and prepare humans for longer missions towards Mars. Thus, the moonMoon will become an exciting playground for testing technologies and assessing permanent human life in space. However, a lot of technological gaps are present and need to be addressed before thinking of a sustainable activity on the moonMoon is a reality. This is especially the case for space transportation (reliable lunar landers and rovers), habitat and human health (to provide efficient shelters for preserving human health) or ISRU (capability to use resources present on the Moon). A common point of all these different fields is the energy storage challenge. Indeed, the Moon\'s environment is known to be harsh with long periods of darkness and cold (many days to permanently). During these lunar nights, the sun cannot provide power anymore but most of the equipment must be maintained at ambient temperature (or even \"On\") requiring electrical (or thermal) power. Thus, energy must be stored during lunar days to be provided during the nights. Most common energy storage systems today rely on mature battery technology. However, when energy for a long Lunar night is to be stored, the presently low energy density of batteries (around 200 Wh/Kg) becomes unattractive: to store enough energy for one rover (3 kW over 14+ days) gives at least 5 tons of batteries). Thus, a higher energy density system must be developed which is the case of RFCS (Regenerative Fuel Cell Systems). The principle is very simple. It consists of splitting the water molecule into H2 and 02 gases when energy from the sun is available and storing them. Then using the H2 and 02 in a Fuel Cell to produce electrical power during the night. An RFCS can reach energy density in a wide range, from 200-300 up to 1000 Wh/kg (low power, very high energy stored). Therefore, the total mass of the energy storage systems can be drastically reduced. In long term vision, H2O value chain can be developed on the Moon and therefore RFCS can constitute a cornerstone for all the future infrastructures. Based on these highly interesting advantages, ALAT is working with CNES on technologies maturation for RCFS. Three axes are pushed in this study: Realisation of a TRL3 breadboard to be used for representative ground test scenarios of lunar activities, development of a test bench and test of a novel passive management system, modelling activities on RFCS. This paper will present the results of this study and the upcoming activities on Air Liquide on RFCS.