Results 41 to 50 of about 13,864,114 (205)
Casimir energy in terms of boundary quantum field theory: The QED case [PDF]
Physical Review D, 2020 We revisit the path integral computation of the Casimir energy between two infinite parallel plates placed in a QED vacuum. We implement perfectly magnetic conductor boundary conditions (as a prelude to the dual superconductor picture of the QCD vacuum) via constraint fields and show how an effective gauge theory can be constructed for the constraint ...
Dudal, David, Pais, Pablo, Rosa, Luigi
openaire +4 more sources
Nonequilibrium Quantum Field Theory [PDF]
, 2009 Bringing together the key ideas from nonequilibrium statistical mechanics and powerful methodology from quantum field theory, this 2008 book captures the essence of nonequilibrium quantum field theory.
Calzetta, Esteban A., Hu, Bei-Lok B.
core +1 more source
Rényi entanglement entropies for the compactified massless boson with open boundary conditions
Journal of High Energy Physics, 2019 We investigate the Rényi entanglement entropies for the one-dimensional massless free boson compactified on a circle, which describes the low energy sector of several interacting many-body 1d systems (Luttinger Liquid).
Alvise Bastianello
doaj +1 more source
On the Non-local Boundary Condition in Quantum Field Theory [PDF]
Progress of Theoretical Physics, 1960 The non-local boundary condition introduced by Bogolyubov et al. is useful for eliminating the difficulty of negative probability concerning the indefinite metric in Hilbert space. Their theory is developed in the S-matrix formalism and does not give a causal description of the physical state.
openaire +1 more source
Boundary energy and boundary states in integrable quantum field theories [PDF]
Nuclear Physics B, 1995 3 figures in the separate compressed file, 42 ...
LECLAIR A +3 more
openaire +2 more sources
Composite operators near the boundary
Journal of High Energy Physics, 2020 We use renormalization group methods to study composite operators existing at a boundary of an interacting conformal field theory. In particular we relate the data on boundary operators to short-distance (near-boundary) divergences of bulk two-point ...
Vladimír Procházka +1 more
doaj +1 more source
Boundary reflection matrix in perturbative quantum field theory [PDF]
Physics Letters B, 1995 We study boundary reflection matrix for the quantum field theory defined on a half line using Feynman's perturbation theory. The boundary reflection matrix can be extracted directly from the two-point correlation function. This enables us to determine the boundary reflection matrix for affine Toda field theory with the Neumann boundary condition modulo
openaire +2 more sources
Entanglement harvesting in the presence of a reflecting boundary
Journal of High Energy Physics, 2021 We study, in the framework of the entanglement harvesting protocol, the entanglement harvesting of both a pair of inertial and uniformly accelerated detectors locally interacting with vacuum massless scalar fields subjected to a perfectly reflecting ...
Zhihong Liu, Jialin Zhang, Hongwei Yu
doaj +1 more source
Tunneling in quantum wires: A boundary conformal field theory approach [PDF]
Nuclear Physics B, 1994 32 pages, REVTEX 3.0, 1 postscript file appended, UBCTP-93 ...
Wong, Eugene, Affleck, Ian
openaire +3 more sources
Quantum corrections to the classical reflection factor of the sinh-Gordon model [PDF]
, 2000 This thesis studies the quantum reflection factor of the sinh-Gordon model under boundary conditions consistent with integrability. First, we review the affine Toda field theory in Chapter One.
Chenaghlou, A., Chenaghlou, Alireza
core