Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-05-13
JHEP 0808:079,2008
Physics
High Energy Physics
High Energy Physics - Theory
12 pages, latex file; V2: typos corrected, refs added. V3: Corrections and clarifications in section two; conclusion didn't ch
Scientific paper
10.1088/1126-6708/2008/08/079
We study 2D Maxwell-dilaton gravity on AdS(2). We distinguish two distinctive cases depending on whether the AdS(2) solution can be lifted to an AdS(3) geometry. In both cases, in order to get a consistent boundary condition we need to work with a twisted energy momentum tensor which has non-zero central charge. With this central charge and the explicit form of the twisted Virasoro generators we compute the entropy of the system using the Cardy formula. The entropy is found to be the same as that obtained from gravity calculations for a specific value of the level of the U(1) current. The agreement is an indication of $AdS(2)/CFT(1) correspondence.
Alishahiha Mohsen
Ardalan Farhad
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