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Non-equilibrium Effective Field Theory for Gravity

open access: yesNon-equilibrium Effective Field Theory for Gravity
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Quasi-fixed points in non-equilibrium field theory

AIP Conference Proceedings, 2003
I summarize progress in describing classical and quantum fields out of equilibrium. Real‐time Monte Carlo methods play an important role in assessing various approximation schemes.
G. Aarts
semanticscholar   +3 more sources

Non-equilibrium quantum field theory and perturbation theory

Nuclear Physics A, 1995
Abstract The perturbation theory is studied for a non-equilibrium situation of an interacting fermion-boson system. The structure of the Green function expansion is represented in the Keldysh-Schwinger formalism. A non-equilibrium Wick theorem is derived by expressing the expectation values of normal-ordered products, which do not vanish in non ...
H H Wolter
exaly   +2 more sources

Non-equilibrium effective field theory and second sound [PDF]

open access: yesJournal of High Energy Physics, 2021
AbstractWe investigate the phenomenon of second sound in various states of matter from the perspective of non-equilibrium effective field theory (EFT). In particular, for each state of matter considered, we find that at least two (though sometimes multiple) qualitatively different EFTs exist at finite temperature such that there is always at least one ...
exaly   +4 more sources

Quantum Field Theory of Non-equilibrium States

, 2007
Quantum field theory is the application of quantum mechanics to systems with infinitely many degrees of freedom. This 2007 textbook presents quantum field theoretical applications to systems out of equilibrium. It introduces the real-time approach to non-equilibrium statistical mechanics and the quantum field theory of non-equilibrium states in general.
Jörgen Rammer
semanticscholar   +2 more sources

A non-equilibrium superradiant phase transition in free space

Nature Physics, 2022
A class of systems exists in which dissipation, external drive and interactions compete and give rise to non-equilibrium phases that would not exist without the drive.
G. Ferioli   +3 more
semanticscholar   +1 more source

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