Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2007-07-26
JHEP0802:034,2008
Physics
High Energy Physics
High Energy Physics - Theory
46 pages, JHEP style. v2: Comments, references added
Scientific paper
10.1088/1126-6708/2008/02/034
The worldsheet of a macroscopic fundamental superstring in the Green-Schwarz light-cone gauge is viewed as a possible boundary hologram of the near horizon region of a small black string. For toroidally compactified strings, the hologram has global symmetries of AdS_3 \times S^{d-1} \times T^{8-d}, (d =3,..,8), only some of which extend to local conformal symmetries. We construct the bulk string theory in detail for the particular case of d=3. The symmetries of the hologram are correctly reproduced from this exact worldsheet description in the bulk. Moreover, the central charge of the boundary Virasoro algebra obtained from the bulk agrees with the Wald entropy of the associated small black holes. This construction provides an exact CFT description of the near horizon region of small black holes both in Type-II and heterotic string theory arising from multiply wound fundamental superstrings.
Dabholkar Atish
Murthy Sameer
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