Results 1 to 10 of about 94,441 (263)

Finite size effects in thermal field theory [PDF]

Journal of Mathematical Physics, 2004
We consider a neutral self-interacting massive scalar field defined in a d-dimensional Euclidean space. Assuming thermal equilibrium, we discuss the one-loop perturbative renormalization of this theory in the presence of rigid boundary surfaces (two parallel hyperplanes), which break translational symmetry.
Nami Fux Svaiter, Svaiter N F
exaly   +4 more sources

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
doaj   +2 more sources

Introduction to Thermal Field Theory: From First Principles to Applications

Universe
This review article provides the basics and discusses some important applications of thermal field theory, namely, the combination of statistical mechanics and relativistic quantum field theory.
Alberto Salvio
doaj   +3 more sources

Scalar thermal field theory for a rotating plasma

European Physical Journal C: Particles and Fields
This paper initiates the systematic study of thermal field theory for generic equilibrium density matrices, which feature arbitrary values not only of temperature and chemical potentials, but also of average angular momentum.
Alberto Salvio
doaj   +4 more sources

Quantum and thermal fluctuations in field theory [PDF]

Physical Review D, 1995
27pp+7 figures, MIT-CTP ...
Liao, Sen-Ben, Polonyi, Janos, Xu, Dapeng   +2 more
openaire   +3 more sources

Interplay between improved interaction rates and modified cosmological histories for dark matter

Frontiers in Physics, 2023
A novel particle has been and still is an intriguing option to explain the strong evidence for dark matter in our universe. To quantitatively predict the dark matter energy density, two main ingredients are needed: interaction rates and the history of ...
Simone Biondini
doaj   +1 more source

Feynman rules for forced wave turbulence

Journal of High Energy Physics, 2023
It has long been known that weakly nonlinear field theories can have a late-time stationary state that is not the thermal state, but a wave turbulent state with a far-from-equilibrium cascade of energy.
Vladimir Rosenhaus, Michael Smolkin
doaj   +1 more source

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
doaj   +1 more source

Equilibrium States in Thermal Field Theory and in Algebraic Quantum Field Theory [PDF]

Annales Henri Poincaré, 2019
40 ...
Braga de GoesVasconcellos J., Drago N., Pinamonti N.   +2 more
openaire   +5 more sources

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
openaire   +6 more sources