Results 11 to 20 of about 1,999 (196)
THERMAL RENORMALONS IN SCALAR FIELD THEORY [PDF]
Modern Physics Letters A, 2000 In the framework of the scalar theory gϕ4, we explore the occurrence of thermal renormalons, i.e. temperature-dependent singularities in the Borel plane. The discussion of a particular renormalon type diagram at finite temperature, using Thermofield Dynamics, allows us to establish that these singularities actually get a temperature dependence.
Loewe, M., Valenzuela, C.
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Thermalization of Strongly Coupled Field Theories
Physical Review Letters, 2011 4 pages, 4 figures + 1 figure (v2), v2: new results added on entanglement entropy in 4d field theories and on entropy growth rate, v3: published ...
Balasubramanian V +9 more
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On thermalization in classical scalar field theory [PDF]
Nuclear Physics B, 2000 Thermalization of classical fields is investigated in a ϕ^4 scalar field theory in 1+1 dimensions, discretized on a lattice. We numerically integrate the classical equations of motion using initial conditions sampled from various nonequilibrium probability distributions.
Aarts, Gert +2 more
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Holographic thermal correlators: a tale of Fuchsian ODEs and integration contours
Journal of High Energy Physics, 2023 We analyze real-time thermal correlation functions of conserved currents in holographic field theories using the grSK geometry, which provides a contour prescription for their evaluation.
R. Loganayagam +2 more
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THERMAL FIELD THEORY IN NON-EQUILIBRIUM STATES [PDF]
International Journal of Modern Physics B, 1996 Conventional transport theory is not really applicable to nonequilibrium systems which exhibit strong quantum effects. We present two different approaches to overcome this problem. Firstly we point out how transport equations may be derived that incorporate a nontrivial spectral function as a typical quantum effect, and test this approach in a toy ...
Henning, P. A. +2 more
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Nuclearity and Thermal States in Conformal Field Theory [PDF]
Communications in Mathematical Physics, 2006 We introduce a new type of spectral density condition, that we call L^2-nuclearity. One formulation concerns lowest weight unitary representations of SL(2,R) and turns out to be equivalent to the existence of characters. A second formulation concerns inclusions of local observable von Neumann algebras in Quantum Field Theory.
Buchholz, D, D'Antoni, C, LONGO, ROBERTO
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Real-time spin systems from lattice field theory
Journal of High Energy Physics, 2023 We construct a lattice field theory method for computing the real-time dynamics of spin systems in a thermal bath. This is done by building on previous work of Takano with Schwinger-Keldysh and functional differentiation techniques. We derive a Schwinger-
Neill C. Warrington
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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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