Ansari, Saeid (2011): Microscopic CalabiYau Black Holes in String Theory. Dissertation, LMU München: Faculty of Physics 

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Abstract
In this thesis we study microscopic aspects of CalabiYau black holes in string theory. We compute the absorption crosssection of the spacetime massless scalars by the worldvolume of D2branes, wrapped on the S2 of an AdS_2 x S^2 x CY_3 geometry of a fourdimensional D4D0 CalabiYau black hole. The D2brane can also have a generic D0 probebrane charge. However, we restrict ourselves to D2branes with small D0charge so that the perturbation theory is applicable. According to the proposed AdS_2/QM correspondence the candidate for the dual theory is the quantum mechanics of a set of probe D0branes in the AdS2 geometry. For small but nonzero probe D0charge we find the quantum mechanical absorption crosssection seen by an asymptotic antide Sitter observer. We repeat the calculations for vanishing probe D0charge as well and discuss our result by comparing with the classical absorption crosssection. In other project, for a given fourdimensional CalabiYau black hole with generic D6D4D2D0 charges we identify a set of supersymmetric branes, which are static or stationary in the global coordinates, of the corresponding elevendimensional near horizon geometry. The set of these BPS states, which include the branes partially or fully wrap the horizon, should play a role in understanding the partition function of black holes with D6charge.
Item Type:  Thesis (Dissertation, LMU Munich) 

Subjects:  600 Natural sciences and mathematics 600 Natural sciences and mathematics > 530 Physics 
Faculties:  Faculty of Physics 
Language:  English 
Date Accepted:  22. July 2011 
1. Referee:  Sachs, Ivo 
Persistent Identifier (URN):  urn:nbn:de:bvb:19123020 
MD5 Checksum of the PDFfile:  5f05aa596d93eedb24bb98decbc51e04 
Signature of the printed copy:  0001/UMC 19718 
ID Code:  12302 
Deposited On:  19. Sep 2011 11:41 
Last Modified:  20. Jul 2016 10:26 