Results 11 to 20 of about 345,713 (293)
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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General boundary quantum field theory: Timelike hypersurfaces in Klein-Gordon theory [PDF]
Physical Review D, 2005 We show that the real massive Klein-Gordon theory admits a description in terms of states on various timelike hypersurfaces and amplitudes associated to regions bounded by them. This realizes crucial elements of the general boundary framework for quantum
M. Abramowitz, R. Jackiw, Robert Oeckl
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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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The g-theorem and quantum information theory [PDF]
Journal of High Energy Physics, 2016 We study boundary renormalization group flows between boundary conformal field theories in $1+1$ dimensions using methods of quantum information theory. We define an entropic $g$-function for theories with impurities in terms of the relative entanglement
Casini, Horacio +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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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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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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Quantum statistical correlations in thermal field theories: Boundary effective theory [PDF]
Physical Review D, 2010 13 pages, 1 ...
Moreira, André Bessa +3 more
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