Results 11 to 20 of about 147,787 (297)

Thermodynamic Properties of Non-equilibrium States in Quantum Field Theory [PDF]

Annals of Physics, 2002
29 pages, minor changes, reference added; version as to appear in Annals of ...
Buchholz, D., Ojima, I., Roos, H.
openaire   +5 more sources

Quantum Mechanics and Quantum Field Theory: Algebraic and Geometric Approaches [PDF]

, 2023
This is a non-standard exposition of the main notions of quantum mechanics and quantum field theory, including recent results. It is based on the algebraic approach in which the starting point is a star-algebra and on the geometric approach in which the ...
Igor Frolov, Albert Schwarz
core   +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

Supersymmetric field theory of non-equilibrium thermodynamic system [PDF]

Physica A: Statistical Mechanics and its Applications, 1999
On the basis of Langevin equation the optimal SUSY field scheme is formulated to discribe a non-equilibrium thermodynamic system with quenched disorder and non-ergodicity effects. Thermodynamic and isothermal susceptibilities, memory parameter and irreversible response are determined at different temperatures and quenched disorder intensities.
Olemskoi, Alexander I., Brazhnyi, Valerii A.   +1 more
openaire   +2 more sources

Goldstone bosons and fluctuating hydrodynamics with dipole and momentum conservation

Journal of High Energy Physics, 2023
We develop a Schwinger-Keldysh effective field theory describing the hydrodynamics of a fluid with conserved charge and dipole moments, together with conserved momentum.
Paolo Glorioso, Xiaoyang Huang, Jinkang Guo, Joaquin F. Rodriguez-Nieva, Andrew Lucas   +4 more
doaj   +1 more source

Ghostbusters: unitarity and causality of non-equilibrium effective field theories [PDF]

Journal of High Energy Physics, 2020
Abstract: For a non-equilibrium physical system defined along a closed time path (CTP), a key constraint is the so-called largest time equation, which is a consequence of unitarity and implies causality. In this paper, we present a simple proof that if the propagators of a non-equilibrium effective action have the proper pole structure, the largest ...
Ping Gao, Paolo Glorioso, Hong Liu
openaire   +6 more sources

QFT approach to dressed particle processes in preheating and non-perturbative mechanism in kinematically-forbidden regime

Journal of High Energy Physics, 2023
We provide a quantum-field theoretic formulation of dressed particle dynamics that systematically includes particle production and scattering/decay processes in the preheating era.
Hidetoshi Taya, Yusuke Yamada
doaj   +1 more source

Analogues of Non-Gibbsianness in Joint Measures of Disordered Mean Field Models [PDF]

, 2002
It is known that the joint measures on the product of spin-space and disorder space are very often non-Gibbsian measures, for lattice systems with quenched disorder, at low temperature.
Külske, Christof, Külske, Christof,
core   +1 more source

Non-cancellation of the parity anomaly in the strong-field regime of QED2+1

Physics Letters B, 2020
Quantum fluctuations lead to an anomalous violation of parity symmetry in quantum electrodynamics for an even number of spatial dimensions. While the leading parity-odd electric current vanishes in vacuum, we uncover a non-cancellation of the anomaly for
R. Ott, T.V. Zache, N. Mueller, J. Berges   +3 more
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Aspects of entanglement in non-local field theories with fractional Laplacian

Journal of High Energy Physics, 2022
In recent years, various aspects of theoretical models with long range interactions have attracted attention, ranging from out-of-time-ordered correlators to entanglement.
Pratim Roy
doaj   +1 more source