Results 31 to 40 of about 345,713 (293)

Boundary energy and boundary states in integrable quantum field theories [PDF]

open access: yesNuclear Physics B, 1995
3 figures in the separate compressed file, 42 ...
LECLAIR A   +3 more
openaire   +2 more sources

Connecting Fisher information to bulk entanglement in holography

open access: yesJournal 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
doaj   +1 more source

Complexity in the presence of a boundary

open access: yesJournal 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
doaj   +1 more source

Scalar Field with Robin Boundary Conditions in the Worldline Formalism [PDF]

open access: yes, 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
core   +3 more sources

Generalized Wentzell Boundary Conditions and Quantum Field Theory [PDF]

open access: yesAnnales Henri Poincaré, 2017
27 pages; v2: minor corrections, references added; v3: final version, title ...
openaire   +2 more sources

On the quantum reflection factor for the sinh-Gordon model with general boundary conditions [PDF]

open access: yes, 2000
The one loop quantum corrections to the classical reflection factor of the sinh-Gordon model are calculated partially for general boundary conditions.
Chenaghlou A., Corrigan E.
core   +2 more sources

Boundary reflection matrix in perturbative quantum field theory [PDF]

open access: yesPhysics 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
openaire   +2 more sources

Supersymmetric graphene on squashed hemisphere

open access: yesJournal of High Energy Physics, 2021
We compute the partition function of N $$ \mathcal{N} $$ = 2 supersymmetric mixed dimensional QED on a squashed hemisphere using localization. Mixed dimensional QED is an abelian gauge theory coupled to charged matter fields at the boundary.
Rajesh Kumar Gupta   +2 more
doaj   +1 more source

Quantum gravity in three dimensions, Witten spinors and the quantisation of length

open access: yesNuclear 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
doaj   +1 more source

Composite operators near the boundary

open access: yesJournal of High Energy Physics, 2020
We use renormalization group methods to study composite operators existing at a boundary of an interacting conformal field theory. In particular we relate the data on boundary operators to short-distance (near-boundary) divergences of bulk two-point ...
Vladimír Procházka   +1 more
doaj   +1 more source

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