Results 41 to 50 of about 357,046 (309)

Conformal field theory on top of a breathing one-dimensional gas of hard core bosons [PDF]

open access: yesSciPost Physics, 2019
The recent results of [J. Dubail, J.-M. Stéphan, J. Viti, P. Calabrese, Scipost Phys. 2, 002 (2017)], which aim at providing access to large scale correlation functions of inhomogeneous critical one-dimensional quantum systems —e.g.
P. Ruggiero, Y. Brun, J. Dubail
semanticscholar   +1 more source

Quantum kinetic theory for spin transport of quarks with background chromo-electromagnetic fields [PDF]

open access: yesJournal of High Energy Physics, 2021
We derive the quantum kinetic equations for massive and massless quarks coupled with the background chromo-electromagnetic fields from the Wigner-function approach with the n expansion and effective power-counting scheme.
Di-Lun Yang
semanticscholar   +1 more source

Quantum theory of superfluorescence based on two-point correlation functions [PDF]

open access: yesPhysical Review A, 2018
Irradiation of a medium by short intense pulses from x-ray / XUV free electron lasers can result in saturated photoionization of inner electronic shells. As a result an inversion of populations between core levels appears.
A. Benediktovitch   +2 more
semanticscholar   +1 more source

Correlation function of modular Hamiltonians [PDF]

open access: yesJournal of High Energy Physics, 2019
We investigate varies correlation functions of modular Hamiltonians defined with respect to spatial regions in quantum field theory. These correlation functions are divergent in general.
J. Long
semanticscholar   +1 more source

Kinetic theory with Berry curvature from quantum field theories [PDF]

open access: yes, 2012
A kinetic theory can be modified to incorporate triangle anomalies and the chiral magnetic effect by taking into account the Berry curvature flux through the Fermi surface.
D. Son, N. Yamamoto
semanticscholar   +1 more source

Subdynamics of relevant observables: a field theoretical approach [PDF]

open access: yes, 2002
An approach to the description of subdynamics inside non-relativistic quantum field theory is presented, in which the notions of relevant observable, time scale and complete positivity of the time evolution are stressed. A scattering theory derivation of
BASSANO VACCHINI   +4 more
core   +2 more sources

Cosmological perturbations from stochastic gravity [PDF]

open access: yes, 2008
In inflationary cosmological models driven by an inflaton field the origin of the primordial inhomogeneities which are responsible for large scale structure formation are the quantum fluctuations of the inflaton field.
A. A. Starobinsky   +18 more
core   +10 more sources

Quantum kinetic theory of metal clusters in an intense electromagnetic field

open access: yesCondensed Matter Physics, 2004
A quantum kinetic theory for weakly inhomogeneous charged particle systems is derived within the framework of nonequilibrium Green's functions. The results are of relevance for valence electrons of metal clusters as well as for confined Coulomb systems ...
M.Bonitz, J.W.Dufty
doaj   +1 more source

Low energy effective theory of Fermi surface coupled with U(1) gauge field in 2+1 dimensions [PDF]

open access: yes, 2009
We study the low energy effective theory for a non-Fermi liquid state in 2+1 dimensions, where a transverse U(1) gauge field is coupled with a patch of Fermi surface with N flavors of fermion in the large N limit.
E. Witten   +3 more
core   +1 more source

Positivity, low twist dominance and CSDR for CFTs

open access: yesSciPost Physics, 2023
We consider a crossing symmetric dispersion relation (CSDR) for CFT four point correlation with identical scalar operators, which is manifestly symmetric under the cross-ratios $u,v$ interchange.
Agnese Bissi, Aninda Sinha
doaj   +1 more source

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