Journal of High Energy Physics (Nov 2017)

Double trace interfaces

  • Charles M. Melby-Thompson,
  • Cornelius Schmidt-Colinet

DOI
https://doi.org/10.1007/JHEP11(2017)110
Journal volume & issue
Vol. 2017, no. 11
pp. 1 – 55

Abstract

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Abstract We introduce and study renormalization group interfaces between two holographic conformal theories which are related by deformation by a scalar double trace operator. At leading order in the 1/N expansion, we derive expressions for the two point correlation functions of the scalar, as well as the spectrum of operators living on the interface. We also compute the interface contribution to the sphere partition function, which in two dimensions gives the boundary g factor. Checks of our proposal include reproducing the g factor and some defect overlap coefficients of Gaiotto’s RG interfaces at large N , and the two-point correlation function whenever conformal perturbation theory is valid.

Keywords