Results 11 to 20 of about 189,255 (150)
Finite temperature gluon propagator in Landau gauge: non-zero Matsubara frequencies and spectral densities [PDF]
EPJ Web of Conferences, 2018 We report on the lattice computation of the Landau gauge gluon propagator at finite temperature, including the non-zero Matsubara frequencies. Moreover, the corresponding Källén-Lehmann spectral density is computed, using a Tikhonov regularisation together with the Morozov discrepancy principle. Implications for gluon confinement are also discussed.
Paulo J. Silva +3 more
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Lattice QCD at non-zero temperature and density
, 2022 Article to appear in a special EPJC Volume in celebration of 50 Years of Quantum Chromodynamics, edited by Franz Gross and Eberhard Klempt [arXiv:2212.11107]
Frithjof Karsch
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N-Representable one-electron reduced density matrices reconstruction at non-zero temperatures [PDF]
Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, 2021 This article retraces different methods that have been explored to account for the atomic thermal motion in the reconstruction of one-electron reduced density matrices from experimental X-ray structure factors (XSF) and directional Compton profiles (DCP).
Yoann L. Launay, Jean‐Michel Gillet
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The Energy Density of a Gas of Photons Surrounding a Spherical Mass $M$ at a Non-Zero Temperature
, 1993 The equations determining the energy density $ $ of a gas of photons in thermodynamic equilibrium with a spherical mass $M$ at a non-zero temperature $T_s>0$ is derived from Einstein's equations. It is found that for large $r$, $ \sim 1/r^2$ where the proportionality constant is a {\it fundamental constant\/} and is the same for all spherical ...
Achilles D. Speliotopoulos
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Bounding the QCD Equation of State with the Lattice
Journal of High Energy Physics, 2023 The equation of state of QCD matter at high densities is relevant for neutron star structure and for neutron star mergers and has been a focus of recent work.
Guy D. Moore, Tyler Gorda
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The sphaleron rate from 4D Euclidean lattices
Journal of High Energy Physics, 2023 We develop a new method to determine thermal activation rates, such as for bubble nucleation, topology change, etc., using 4-dimensional Euclidean methods. This allows nonperturbative study on the lattice. We then investigate the strong sphaleron rate in
Marc Barroso Mancha, Guy D. Moore
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Pion spectral properties above the chiral crossover of QCD
Journal of High Energy Physics, 2022 Spectral functions encode a wealth of information about the dynamics of any given system, and the determination of their non-perturbative characteristics is a long-standing problem in quantum field theory.
Peter Lowdon, Owe Philipsen
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Stabilizing complex Langevin for real-time gauge theories with an anisotropic kernel
Journal of High Energy Physics, 2023 The complex Langevin (CL) method is a promising approach to overcome the sign problem that occurs in real-time formulations of quantum field theories. Using the Schwinger-Keldysh formalism, we study SU(N c ) gauge theories with CL.
Kirill Boguslavski +2 more
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Fate of the topological susceptibility in two-color dense QCD
Journal of High Energy Physics, 2023 We explore the topological susceptibility at finite quark chemical potential and zero temperature in two-color QCD (QC2D) with two flavors. Through the Ward-Takahashi identities of QC2D, we find that the topological susceptibility in the vacuum solely ...
Mamiya Kawaguchi, Daiki Suenaga
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Chiral symmetry restoration in the three-dimensional four-fermion model at nonzero temperature and density [PDF]
Physical Review D, 2001 The three-dimensional four-fermion model with a Z_2 chiral symmetry and N=4 fermion species in the system is investigated numerically at non-zero temparature and chemical potential. The phase diagram in the (chemical potential, temperature) plane is mapped out quantitatively.
John B. Kogut +2 more
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