Results 21 to 30 of about 13,323,592 (307)
Quantum statistical correlations in thermal field theories: Boundary effective theory [PDF]
Physical Review D, 2010 We show that the one-loop effective action at finite temperature for a scalar field with quartic interaction has the same renormalized expression as at zero temperature if written in terms of a certain classical field $ϕ_c$, and if we trade free propagators at zero temperature for their finite-temperature counterparts.
Moreira, André Bessa +3 more
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Integrable quantum field theory with boundaries: the exact g-function [PDF]
Nuclear Physics B, 2004 The g-function was introduced by Affleck and Ludwig in the context of critical quantum systems with boundaries. In the framework of the thermodynamic Bethe ansatz (TBA) method for relativistic scattering theories, all attempts to write an exact integral equation for the off-critical version of this quantity have, up to now, been unsuccesful.
DOREY P +3 more
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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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Complexity in the presence of a boundary
Journal of High Energy Physics, 2020 The effects of a boundary on the circuit complexity are studied in two dimensional theories. The analysis is performed in the holographic realization of a conformal field theory with a boundary by employing different proposals for the dual of the ...
Paolo Braccia +2 more
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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 quantum harmonic oscillator on a circle.
Bezerra, V. B., Rego-Monteiro, M. A.
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Duality and transport for supersymmetric graphene from the hemisphere partition function
Journal of High Energy Physics, 2020 We use localization to compute the partition function of a four dimensional, supersymmetric, abelian gauge theory on a hemisphere coupled to charged matter on the boundary.
Rajesh Kumar Gupta +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 +2 more
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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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Nonequilibrium Quantum Field Theory [PDF]
, 2009 Bringing together the key ideas from nonequilibrium statistical mechanics and powerful methodology from quantum field theory, this 2008 book captures the essence of nonequilibrium quantum field theory.
Calzetta, Esteban A., Hu, Bei-Lok B.
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