Effect of the deformation operator in the D1D5 CFT
Abstract
The D1D5 CFT gives a holographic dual description of a nearextremal black hole in string theory. The interaction in this theory is given by a marginal deformation operator, which is composed of supercharges acting on a twist operator. The twist operator links together different copies of a free CFT. We study the effect of this deformation operator when it links together CFT copies with winding numbers M and N to produce a copy with winding M + N, populated with excitations of a particular form. We compute the effect of the deformation operator in the full supersymmetric theory, firstly on a RamondRamond ground state and secondly on states with an initial bosonic or fermionic excitation. Our results generalize recent work which studied only the bosonic sector of the CFT. Our findings are a step towards understanding thermalization in the D1D5 CFT, which is related to black hole formation and evaporation in the bulk.
 Publication:

Journal of High Energy Physics
 Pub Date:
 January 2015
 DOI:
 10.1007/JHEP01(2015)071
 arXiv:
 arXiv:1410.4543
 Bibcode:
 2015JHEP...01..071C
 Keywords:

 Black Holes in String Theory;
 AdSCFT Correspondence;
 High Energy Physics  Theory
 EPrint:
 54 pages, 3 figures, v3: typos corrected