Results 1 to 10 of about 16,674 (148)
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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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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Critical 1- and 2-point spin correlations for the O(2) model in 3d bounded domains
Journal of High Energy Physics, 2021 We study the critical properties of the 3d O(2) universality class in bounded domains through Monte Carlo simulations of the clock model. We use an improved version of the latter, chosen to minimize finite-size corrections at criticality, with 8 ...
Alessandro Galvani +2 more
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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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Two point functions in defect CFTs
Journal of High Energy Physics, 2021 This paper is designed to be a practical tool for constructing and investigating two-point correlation functions in defect conformal field theory, directly in physical space, between any two bulk primaries or between a bulk primary and a defect primary ...
Christopher P. Herzog, Abhay Shrestha
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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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Harvesting correlations from vacuum quantum fields in the presence of a reflecting boundary
Journal of High Energy Physics, 2023 We explore correlations harvesting by two static detectors locally interacting with vacuum massless scalar fields in the presence of an infinite perfectly reflecting boundary.
Zhihong Liu, Jialin Zhang, Hongwei Yu
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O(N) models with boundary interactions and their long range generalizations
Journal of High Energy Physics, 2020 We study the critical properties of scalar field theories in d + 1 dimensions with O(N) invariant interactions localized on a d-dimensional boundary. By a combination of large N and epsilon expansions, we provide evidence for the existence of non-trivial
Simone Giombi, Himanshu Khanchandani
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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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Bootstrapping boundary-localized interactions
Journal of High Energy Physics, 2020 We study conformal boundary conditions for the theory of a single real scalar to investigate whether the known Dirichlet and Neumann conditions are the only possibilities.
Connor Behan +3 more
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