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Out-of-horizon correlations following a quench in a relativistic quantum field theory

open access: yesJournal of High Energy Physics, 2020
One of the manifestations of relativistic invariance in non-equilibrium quantum field theory is the “horizon effect” a.k.a. light-cone spreading of correlations: starting from an initially short-range correlated state, measurements of two observers at ...
I. Kukuljan, S. Sotiriadis, G. Takács
doaj   +1 more source

Quantum Gravity as Topological Quantum Field Theory [PDF]

open access: yes, 1995
The physics of quantum gravity is discussed within the framework of topological quantum field theory. Some of the principles are illustrated with examples taken from theories in which space-time is three dimensional.Comment: 23 pages, amstex, JMP special
Barrett, John W.
core   +3 more sources

Finslerian quantum field theory [PDF]

open access: yesNonlinear Analysis: Theory, Methods & Applications, 2005
Invited plenary lecture at the Fourth World Congress of Nonlinear Analysts in the session: Applications of Finsler Differential Geometry (in Engineering, Physics and Biology), July 5, 2004, Orlando ...
openaire   +2 more sources

Running of effective dimension and cosmological entropy in early universe

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
In this paper, we suggest that the early universe starts from a high-energetic state with a two dimensional description and the state recovers to be four dimensional when the universe evolves into the radiation dominated phase.
Yong Xiao
doaj   +1 more source

Phase transition and piezoelectric property of (Ag,K)NbO3 ceramics

open access: yesJournal of Materiomics, 2022
AgNbO3 is an antiferroelectric (AFE) material with double hysteresis loop. Both the antiferroelectricity and ferroelectricity can be enhanced by doping.
Lin Chen   +5 more
doaj   +1 more source

On Bethe vectors in gl3 $$ \mathfrak{g}{\mathfrak{l}}_3 $$-invariant integrable models

open access: yesJournal of High Energy Physics, 2018
We consider quantum integrable models solvable by the nested algebraic Bethe ansatz and possessing gl3 $$ \mathfrak{g}{\mathfrak{l}}_3 $$-invariant R-matrix.
A. Liashyk, N. A. Slavnov
doaj   +1 more source

Quantum Field Theory Representation in Quantum Computation

open access: yesApplied Sciences, 2021
Recently, from the deduction of the result MIP* = RE in quantum computation, it was obtained that Quantum Field Theory (QFT) allows for different forms of computation in quantum computers that Quantum Mechanics (QM) does not allow. Thus, there must exist
Nicolás Lori   +2 more
doaj   +1 more source

Emergence of string-like physics from Lorentz invariance in loop quantum gravity [PDF]

open access: yes, 2014
We consider a quantum field theory on a spherically symmetric quantum space time described by loop quantum gravity. The spin network description of space time in such a theory leads to equations for the quantum field that are discrete.
Gambini, Rodolfo, Pullin, Jorge
core   +3 more sources

Locally covariant quantum field theory with external sources [PDF]

open access: yes, 2014
We provide a detailed analysis of the classical and quantized theory of a multiplet of inhomogeneous Klein-Gordon fields, which couple to the spacetime metric and also to an external source term; thus the solutions form an affine space.
Fewster, Christopher J.   +1 more
core   +3 more sources

Shuffling Quantum Field Theory

open access: yesLetters in Mathematical Physics, 2000
13p, 5 fig.(eps), ref.
openaire   +3 more sources

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