Results 11 to 20 of about 858,174 (293)

Modular invariance and thermal effective field theory in CFT

Journal of High Energy Physics
We use thermal effective field theory to derive that the coefficient of the first subleading piece of the thermal free energy, c 1, is equal to the coefficient of the subleading piece of the Casimir energy on S 1 × S d−2 for d ≥ 4.
Kuroush Allameh, Edgar Shaghoulian
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Thermal Effects in Ising Cosmology

Universe, 2023
We consider a real scalar field in de Sitter background and compute its thermal propagators. We propose that in a dS/CFT context, nontrivial thermal effects as seen by an ‘out’ observer can be encoded in the anomalous dimensions of the d=3 Ising model ...
Nikos Irges, Antonis Kalogirou, Fotis Koutroulis   +2 more
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Determining all thermodynamic transport coefficients for an interacting large N quantum field theory

Journal of High Energy Physics, 2023
Thermodynamic transport coefficients can be calculated directly from quantum field theory without requiring analytic continuation to real time. We determine all second-order thermodynamic transport coefficients for the uncharged N-component massless ...
Max Weiner, Paul Romatschke
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Renormalized thermal entropy in field theory [PDF]

Physical Review D, 2009
Standard entropy calculations in quantum field theory, when applied to a subsystem of definite volume, exhibit area-dependent UV divergences that make a thermodynamic interpretation troublesome. In this paper we define a renormalized entropy which is related with the Newton-Wigner position operator. Accordingly, whenever we trace over a region of space,
CACCIATORI, SERGIO LUIGI, Costa F, Piazza F.   +2 more
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INTRODUCTION TO THERMAL FIELD THEORY [PDF]

International Journal of Modern Physics A, 1993
This is a very basic introduction and short (and of course incomplete) overview of thermal field theory. In the first part, I introduce the thermal propagator at a very simple level and give the Feynman rules using the time-path contour method. In the second part, I give examples of these rules in scalar theory and discuss the origin of the thermal ...
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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, Mukund Rangamani, Julio Virrueta   +2 more
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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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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., Nakamura, K., Yamanaka, Y.   +2 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, Richard Barney, Christopher L. Baldwin, Victor Galitski, Brian Swingle   +4 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, A. Liam Fitzpatrick, Emanuel Katz, Matthew T. Walters   +3 more
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