Results 11 to 20 of about 1,175,324 (279)
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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Topological transport from a black hole
Physics Letters B, 2018 In this paper the low temperature zero-frequency transport in a 2+1-dimensional theory dual to a dyonic black hole is discussed. It is shown that transport exhibits topological features: the transverse electric and heat conductivities satisfy the ...
Dmitry Melnikov
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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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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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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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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.
Kogut, J. B., Strouthos, C. G.
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Chiral And Parity Anomalies At Finite Temperature And Density [PDF]
, 1997 Two closely related topological phenomena are studied at finite density and temperature. These are chiral anomaly and Chern-Simons term. By using different methods it is shown that $\mu^2 = m^2$ is the crucial point for Chern-Simons at zero temperature ...
A.N. Sissakian +26 more
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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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Evidence for BCS Diquark Condensation in the 3+1d Lattice NJL Model [PDF]
, 2002 We present results of numerical simulations of the 3+1d Nambu - Jona-Lasinio model with a non-zero baryon chemical potential mu, with particular emphasis on the superfluid diquark condensate and associated susceptibilities. The results, when extrapolated
Alford +21 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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