Results 31 to 40 of about 13,864,114 (205)
Quantum field theories with boundaries and novel instabilities [PDF]
Physical Review D, 2014 Quantum physics on manifolds with boundary brings novel aspects due to boundary conditions. One important feature is the appearance of localised negative eigenmodes for the Laplacian on the boundary. These can potentially lead to instabilities. We consider quantum field theories on such manifolds and interpret these as leading to the onset of phase ...
Govindarajan, T. R., Nair, V. P.
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Quantum field theory on manifolds with a boundary [PDF]
Journal of Physics A: Mathematical and General, 2005 The version to appear in Journal of Physics A, a discussion on the relation to other works in the field is ...
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Connecting Fisher information to bulk entanglement in holography
Journal of High Energy Physics, 2018 In the context of relating AdS/CFT to quantum information theory, we propose a holographic dual of Fisher information metric for mixed states in the boundary field theory.
Souvik Banerjee +2 more
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Properties of RG interfaces for 2D boundary flows
Journal of High Energy Physics, 2021 We consider RG interfaces for boundary RG flows in two-dimensional QFTs. Such interfaces are particular boundary condition changing operators linking the UV and IR conformal boundary conditions. We refer to them as RG operators.
Anatoly Konechny
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A Lorentzian inversion formula for defect CFT
Journal of High Energy Physics, 2020 We present a Lorentzian inversion formula valid for any defect CFT that extracts the bulk channel CFT data as an analytic function of the spin variable.
Pedro Liendo +2 more
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Taking Particle Physics Seriously: a Critique of the Algebraic Approach to Quantum Field Theory [PDF]
, 2011 I argue against the currently-prevalent view in philosophy of physics that algebraic quantum field theory (AQFT) is the correct framework for philosophy of quantum field theory and that "conventional" quantum field theory (CQFT), of the sort used in ...
Wallace, David, David Wallace
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Quantum gravity in three dimensions, Witten spinors and the quantisation of length
Nuclear Physics B, 2018 In this paper, I investigate the quantisation of length in euclidean quantum gravity in three dimensions. The starting point is the classical hamiltonian formalism in a cylinder of finite radius. At this finite boundary, a counter term is introduced that
Wolfgang Wieland
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Overlap singularity and time evolution in integrable quantum field theory
Journal of High Energy Physics, 2018 We study homogeneous quenches in integrable quantum field theory where the initial state contains zero-momentum particles. We demonstrate that the two-particle pair amplitude necessarily has a singularity at the two-particle threshold.
D. X. Horváth, M. Kormos, G. Takács
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Recent Mathematical Developments in Quantum Field Theory [PDF]
, 2016 This workshop has focused on three areas in mathematical quantum field theory and their interrelations: 1) conformal field theory, 2) constructions of interacting models of quantum field theory by various methods, and 3) several approaches studying the ...
Kopper, Christoph +8 more
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Generalized Wentzell Boundary Conditions and Quantum Field Theory [PDF]
Annales Henri Poincaré, 2017 27 pages; v2: minor corrections, references added; v3: final version, title ...
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