Results 1 to 10 of about 1,558,740 (225)
The Unruh Effect in General Boundary Quantum Field Theory [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2013 In the framework of the general boundary formulation (GBF) of scalar quantum field theory we obtain a coincidence of expectation values of local observables in the Minkowski vacuum and in a particular state in Rindler space.
Dennis Rätzel, Daniele Colosi
doaj +9 more sources
Boundary Operators in Quantum Field Theory [PDF]
International Journal of Modern Physics A, 2000 The fundamental laws of physics can be derived from the requirement of invariance under suitable classes of transformations on the one hand, and from the need for a well-posed mathematical theory on the other hand.
Esposito G. +5 more
core +11 more sources
Quantum field theory on manifolds with a boundary [PDF]
Journal of Physics A: Mathematical and General, 2005 We discuss quantum theory of fields \phi defined on (d+1)-dimensional manifold {\cal M} with a boundary {\cal B}. The free action W_{0}(\phi) which is a bilinear form in \phi defines the Gaussian measure with a covariance (Green function) {\cal G}.
Abramowitz M +17 more
core +6 more sources
BOUNDARY INTEGRABLE QUANTUM FIELD THEORIES [PDF]
Non-Perturbative QFT Methods and Their Applications, 2001 A brief survey of recent results in the study of boundary integrable quantum field theories, indicating some currently open problems. Based on lectures given at the 2000 Eotvos Summer School in Physics on `Nonperturbative QFT methods and their applications'.
Patrick Dorey
arxiv +6 more sources
Some boundary effects in quantum field theory [PDF]
Physical Review D, 2004 We have constructed a quantum field theory in a finite box, with periodic boundary conditions, using the hypothesis that particles living in a finite box are created and/or annihilated by the creation and/or annihilation operators, respectively, of a ...
E. H. Lieb +8 more
core +6 more sources
General boundary quantum field theory: Foundations and probability interpretation [PDF]
Advances in Theoretical and Mathematical Physics, 2008 We elaborate on the proposed general boundary formulation as an extension of standard quantum mechanics to arbitrary (or no) backgrounds. Temporal transition amplitudes are generalized to amplitudes for arbitrary spacetime regions.
Oeckl, Robert
core +5 more sources
BOUNDARY S MATRIX AND BOUNDARY STATE IN TWO-DIMENSIONAL INTEGRABLE QUANTUM FIELD THEORY [PDF]
Int.J.Mod.Phys. A9 (1994) 3841-3886; Erratum-ibid. A9 (1994) 4353, 1994 We study integrals of motion and factorizable S-matrices in two-dimensional integrable field theory with boundary. We propose the ``boundary cross-unitarity equation'' which is the boundary analog of the cross-symmetry condition of the ``bulk'' S-matrix.
Subir Ghoshal +1 more
arxiv +5 more sources
Boundary reflection matrix in perturbative quantum field theory [PDF]
Phys.Lett. B353 (1995) 213-221, 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
J.D Kim
arxiv +6 more sources
Irreversibility in quantum field theories with boundaries [PDF]
Journal of High Energy Physics, 2019 We study conformal field theories with boundaries, and their boundary renormalization group (RG) flows, using methods from quantum information theory. Positivity of the relative entropy, together with unitarity and Lorentz invariance, give rise to bounds
Horacio Casini +2 more
doaj +7 more sources
Quantum field theory with an interaction on the boundary
Annals of Physics, 2006 We consider quantum theory of fields \phi defined on a D dimensional manifold (bulk) with an interaction V(\phi) concentrated on a ...
Abramowitz +36 more
core +5 more sources