Results 41 to 50 of about 344,162 (327)
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 radiation by an Unruh-DeWitt detector in oscillatory motion
Journal of High Energy Physics, 2017 Quantum radiated power emitted by an Unruh-DeWitt (UD) detector in linear oscillatory motion in (3+1)D Minkowski space, with the internal harmonic oscillator minimally coupled to a massless scalar field, is obtained non-perturbatively by numerical method.
Shih-Yuin Lin
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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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Berry phase in quantum field theory: Diabolical points and boundary phenomena [PDF]
Physical Review B, 2020 We study aspects of Berry phase in gapped many-body quantum systems by means of effective field theory. Once the parameters are promoted to spacetime-dependent background fields, such adiabatic phases are described by Wess-Zumino-Witten (WZW) and similar terms.
Po-Shen Hsin +2 more
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Boundary energy and boundary states in integrable quantum field theories [PDF]
Nuclear Physics B, 1995 3 figures in the separate compressed file, 42 ...
LECLAIR A +3 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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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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Scalar Field with Robin Boundary Conditions in the Worldline Formalism [PDF]
, 2007 The worldline formalism has been widely used to compute physical quantities in quantum field theory. However, applications of this formalism to quantum fields in the presence of boundaries have been studied only recently.
Bastianelli, Fiorenzo +2 more
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Two dimensional general covariance from three dimensions [PDF]
, 1993 A 3d generally covariant field theory having some unusual properties is described. The theory has a degenerate 3-metric which effectively makes it a 2d field theory in disguise.
Arnowitt A +20 more
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Boundary reflection matrix in perturbative quantum field theory [PDF]
Physics Letters B, 1995 We study boundary reflection matrix for the quantum field theory defined on a half line using Feynman's perturbation theory. The boundary reflection matrix can be extracted directly from the two-point correlation function. This enables us to determine the boundary reflection matrix for affine Toda field theory with the Neumann boundary condition modulo
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