59 citations · 102 across the 13 of their papers we have counts for
4 papers · 1 filter
The GHY boundary term from the string worldsheet to linear order
Amr Ahmadain, Shoaib Akhtar, Rifath Khan
Using the method of images we derive the boundary term of the Einstein- action in half-space from the spherical worldsheet to first order in and to linear order in the me…
A Background-Independent Closed String Action at Tree Level
Amr Ahmadain, Alexander Frenkel, Aron C. Wall
We propose an off-shell bosonic string action that removes the renormalization window constraint of [1]. To all orders in conformal perturbation theory, this action allows for defo…
A Comment on Deriving the Gibbons-Hawking-York Term From the String Worldsheet
Amr Ahmadain, Vasudev Shyam, Zihan Yan
In this note, we show that the noncovariant metric boundary term obtained from the nonlinear sigma model worldsheet derivation of the bulk off-shell sphere partition function is cl…
A Worldsheet Derivation of the Classical Off-shell Boundary Action for the Dilaton in Half-Space
Amr Ahmadain, Rifath Khan
We use the method of images to present a worldsheet derivation of the sphere partition function for the dilaton in half-space to leading order in with Neumann boundary conditi…