Entropy function and AdS_{2}/CFT_{1} correspondence
Abstract
Wald's formula for black hole entropy, applied to extremal black holes, leads to the entropy function formalism. We manipulate the entropy computed this way to express it as the logarithm of the ground state degeneracy of a dual quantum mechanical system. This provides a natural definition of the extremal black hole entropy in the full quantum theory. Our analysis also clarifies the relationship between the entropy function formalism and the Euclidean action formalism.
 Publication:

Journal of High Energy Physics
 Pub Date:
 November 2008
 DOI:
 10.1088/11266708/2008/11/075
 arXiv:
 arXiv:0805.0095
 Bibcode:
 2008JHEP...11..075S
 Keywords:

 High Energy Physics  Theory
 EPrint:
 LaTeX file, 13 pages