Results 51 to 60 of about 344,162 (327)

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

Protecting the conformal symmetry via bulk renormalization on Anti deSitter space [PDF]

open access: yes, 2010
The problem of perturbative breakdown of conformal symmetry can be avoided, if a conformally covariant quantum field phi on d-dimensional Minkowski spacetime is viewed as the boundary limit of a quantum field Phi on d+1-dimensional anti-deSitter ...
C. Fronsdal   +28 more
core   +3 more sources

Overlap singularity and time evolution in integrable quantum field theory

open access: yesJournal 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
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

Induced Dilaton in Topologically Massive Quantum Field Theory [PDF]

open access: yes, 1998
We consider the conformally-invariant coupling of topologically massive gravity to a dynamical massless scalar field theory on a three-manifold with boundary.
Kogan, I. I., Momen, A., Szabo, R. J.
core   +3 more sources

Duality and transport for supersymmetric graphene from the hemisphere partition function

open access: yesJournal 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
doaj   +1 more source

Rényi entanglement entropies for the compactified massless boson with open boundary conditions

open access: yesJournal of High Energy Physics, 2019
We investigate the Rényi entanglement entropies for the one-dimensional massless free boson compactified on a circle, which describes the low energy sector of several interacting many-body 1d systems (Luttinger Liquid).
Alvise Bastianello
doaj   +1 more source

Tunneling in quantum wires: A boundary conformal field theory approach [PDF]

open access: yesNuclear Physics B, 1994
Tunneling through a localized barrier in a one-dimensional interacting electron gas has been studied recently using Luttinger liquid techniques. Stable phases with zero or unit transmission occur, as well as critical points with universal fractional transmission whose properties have only been calculated approximately, using a type of ``$ $-expansion''
Wong, Eugene, Affleck, Ian
openaire   +3 more sources

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