Results 11 to 20 of about 344,162 (327)
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
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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
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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
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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
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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
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Boundary quantum field theories with infinite resonance states [PDF]
Nuclear Physics B, 2002 18 pages, 11 figures, LATEX ...
P. Mosconi, G. Mussardo, V. Riva
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Classical and Quantum Lagrangian Field Theories with Boundary [PDF]
Proceedings of Proceedings of the Corfu Summer Institute 2011 — PoS(CORFU2011), 2012 This note gives an introduction to Lagrangian field theories in the presence of boundaries. After an overview of the classical aspects, the cohomological formalisms to resolve singularities in the bulk and in the boundary theories (the BV and the BFV formalisms, respectively) are recalled. One of the goals here (and in [arXiv:1201.0290]) is to show how
Alberto S. Cattaneo +2 more
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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
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BOUNDARY S MATRIX AND BOUNDARY STATE IN TWO-DIMENSIONAL INTEGRABLE QUANTUM FIELD THEORY [PDF]
International Journal of Modern Physics A, 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 crossing-symmetry condition of the "bulk" S matrix.
SUBIR GHOSHAL, ALEXANDER ZAMOLODCHIKOV
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On perturbative quantum field theory with boundary [PDF]
Nuclear Physics B, 2004 Boundary quantum field theory is investigated in the Lagrangian framework. Models are defined perturbatively around the Neumann boundary condition. The analyticity properties of the Green functions are analyzed: Landau equations, Cutkosky rules together with the Coleman-Norton interpretation are derived.
Zoltán Bajnok +2 more
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