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Perturbative nonequilibrium thermal field theory [PDF]
Physical Review D, 2013 We present a new perturbative formulation of non-equilibrium thermal field theory, based upon non-homogeneous free propagators and time-dependent vertices. Our approach to non-equilibrium dynamics yields time-dependent diagrammatic perturbation series that are free of pinch singularities, without the need to resort to quasi-particle approximation or ...
Millington, P; id_orcid 0000-0001-6942-8257 +1 more
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Spectral form factor of a quantum spin glass
Journal of High Energy Physics, 2022 It is widely expected that systems which fully thermalize are chaotic in the sense of exhibiting random-matrix statistics of their energy level spacings, whereas integrable systems exhibit Poissonian statistics.
Michael Winer +4 more
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Universality of quantum information in chaotic CFTs
Journal of High Energy Physics, 2018 We study the Eigenstate Thermalization Hypothesis (ETH) in chaotic conformal field theories (CFTs) of arbitrary dimensions. Assuming local ETH, we compute the reduced density matrix of a ball-shaped subsystem of finite size in the infinite volume limit ...
Nima Lashkari +2 more
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Thermalization and chaos in a 1+1d QFT
Journal of High Energy Physics, 2023 We study aspects of chaos and thermodynamics at strong coupling in a scalar model using LCT numerical methods. We find that our eigenstate spectrum satisfies Wigner-Dyson statistics and that the coefficients describing eigenstates in our basis satisfy ...
Luca V. Delacrétaz +3 more
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Global symmetries and partial confinement
Journal of High Energy Physics, 2022 In gauge theories, spontaneous breaking of the centre symmetry provides a precise definition of deconfinement. In large-N gauge theories, evidence has emerged recently that between confined and deconfined phases a partially-deconfined phase can appear ...
Masanori Hanada +3 more
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Leontovich relations in thermal field theory [PDF]
The European Physical Journal C, 2000 14 pages, 4 ...
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Some information theoretic aspects of de-Sitter holography
Journal of High Energy Physics, 2020 Built on our observation that entangling surfaces of the boundary field theory are great co-dimension one spheres in the context of DS/dS correspondence, we study some information theoretic quantities of the field theory dual intensively using ...
Hao Geng
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The Journal of Chemical PhysicsSeveral closely related ab initio thermal mean-field theories for fermions, both well-established and new ones, are compared with one another at the formalism level and numerically. The theories considered are Fermi–Dirac theory; thermal Hartree–Fock (HF) theory; two modifications of the thermal single-determinant approximation of Kaplan and Argyres ...
Pinhao Gu, So Hirata
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Kubo formulas for thermodynamic transport coefficients
Journal of High Energy Physics, 2018 Uncharged relativistic fluids in 3+1 dimensions have three independent thermodynamic transport coefficients at second order in the derivative expansion. Fluids with a single global U(1) current have nine, out of which seven are parity preserving.
Pavel Kovtun, Ashish Shukla
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Constructing an entangled Unruh Otto engine and its efficiency
Journal of High Energy Physics, 2022 Uniformly accelerated frame mimics a thermal bath whose temperature is proportional to the proper acceleration. Using this phenomenon we give a detailed construction of an Otto cycle between two energy eigenstates of a system, consists of two entangled ...
Dipankar Barman, Bibhas Ranjan Majhi
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