Results 11 to 20 of about 13,323,592 (307)
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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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
Cattaneo, A S, Mnëv, P, Reshetikhin, N
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An Algebraic Construction of Boundary Quantum Field Theory [PDF]
Communications in Mathematical Physics, 2010 We build up local, time translation covariant Boundary Quantum Field Theory nets of von Neumann algebras A_V on the Minkowski half-plane M_+ starting with a local conformal net A of von Neumann algebras on the real line and an element V of a unitary semigroup E(A) associated with A.
Longo, R., Witten, E.
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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.
Bajnok, Z, Bohm, G, Takacs, G
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Quantum field theories on manifolds with curved boundaries: Scalar fields [PDF]
Nuclear Physics B, 1993 50 pages, DAMTP/92 ...
McAvity, D. M., Osborn, H.
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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. As a part of this programme, the present paper shows under which conditions the introduction of pseudodifferential boundary operators in ...
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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'.
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Boundary effects in quantum field theory
Physical Review D, 1979 Electromagnetic and scalar fields are quantized in the region near an arbitrary smooth boundary, and the renormalized expectation value of the stress-energy tensor is calculated. The energy density is found to diverge as the boundary is approached.
Deutsch, D, Candelas, P
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Boundary quantum field theories with infinite resonance states [PDF]
Nuclear Physics B, 2002 18 pages, 11 figures, LATEX ...
Mosconi, P., Mussardo, G., Riva, V.
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