Results 1 to 10 of about 598 (95)

An interacting, higher derivative, boundary conformal field theory

Journal of High Energy Physics
We consider a higher derivative scalar field theory in the presence of a boundary and a classically marginal interaction. We first investigate the free limit where the scalar obeys the square of the Klein-Gordon equation.
Christopher P. Herzog, Yanjun Zhou
doaj   +2 more sources

Entanglement asymmetry and symmetry defects in boundary conformal field theory

Journal of High Energy Physics
A state in a quantum system with a given global symmetry, G, can be sensitive to the presence of boundaries, which may either preserve or break this symmetry.
Yuya Kusuki, Sara Murciano, Hirosi Ooguri, Sridip Pal   +3 more
doaj   +2 more sources

Holographic boundary conformal field theory with T T ¯ $$ T\overline{T} $$ deformation

Journal of High Energy Physics
We propose a holographic dual of boundary conformal field theory (BCFT) with T T ¯ $$ T\overline{T} $$ deformation, i.e. of T T ¯ $$ T\overline{T} $$ BCFT.
Zhi Wang, Feiyu Deng
doaj   +2 more sources

Non-relativistic conformal field theory in the presence of boundary

Journal of High Energy Physics, 2022
We study non-relativistic conformal field theory on a flat space in the presence of a planar boundary. We compute correlation functions of primary operators and obtain the expression for the boundary conformal block.
Rajesh Kumar Gupta, Ramanpreet Singh
doaj   +1 more source

Boundary conformal field theory at large charge

Journal of High Energy Physics, 2021
We study operators with large internal charge in boundary conformal field theories (BCFTs) with internal symmetries. Using the state-operator correspondence and the existence of a macroscopic limit, we find a non-trivial relation between the scaling ...
Gabriel Cuomo, Márk Mezei, Avia Raviv-Moshe   +2 more
doaj   +1 more source

A sum rule for boundary contributions to the trace anomaly

Journal of High Energy Physics, 2022
In the context of boundary conformal field theory, we derive a sum rule that relates two and three point functions of the displacement operator. For four dimensional conformal field theory with a three dimensional boundary, this sum rule in turn relates ...
Christopher P. Herzog, Vladimir Schaub
doaj   +1 more source

Symmetry-resolved entanglement entropy, spectra & boundary conformal field theory

Journal of High Energy Physics, 2023
We perform a comprehensive analysis of the symmetry-resolved (SR) entanglement entropy (EE) for one single interval in the ground state of a 1 + 1D conformal field theory (CFT), that is invariant under an arbitrary finite or compact Lie group, G.
Yuya Kusuki, Sara Murciano, Hirosi Ooguri, Sridip Pal   +3 more
doaj   +1 more source

On marginal operators in boundary conformal field theory

Journal of High Energy Physics, 2019
The presence of a boundary (or defect) in a conformal field theory allows one to generalize the notion of an exactly marginal deformation. Without a boundary, one must find an operator of protected scaling dimension ∆ equal to the space-time dimension d ...
Christopher P. Herzog, Itamar Shamir
doaj   +1 more source

Effects of non-conformal boundary on entanglement entropy

Journal of High Energy Physics, 2020
Spacetime boundaries with canonical Neuman or Dirichlet conditions preserve conformal invarience, but “mixed” boundary conditions which interpolate linearly between them can break conformal symmetry and generate interesting Renormalization Group flows ...
Andrew Loveridge
doaj   +1 more source

Chern-Simons gravity dual of BCFT

Journal of High Energy Physics, 2021
In this paper we provide a Chern-Simons gravity dual of a two dimensional conformal field theory on a manifold with boundaries, so called boundary conformal field theory (BCFT).
Tadashi Takayanagi, Takahiro Uetoko
doaj   +1 more source