quinta-feira, 18 de junho de 2009

Gabriel Lopes Cardoso

Gabriel Cardoso oferece:

1) Atractores e a equação da anomalia holomorfa na teoria das cordas topologicas (dissertação)

Attractors and the holomorphic anomaly equation in topological string theory (thesis)

Abstract:

The Topological string partition function can be interpreted as a wave function [1].
In this context, the non-holomorphic anomaly equation of the topological string is reinterpreted as an apparent dependence of the wave function on the background due to the choice of a complex polarization. Other choices of polarization are, however, possible. The attractor equations for BPS black holes, for instance, suggest using real polarization, in which case the backround dependence is absent [2].

Literature:

[1] E. Witten arXiv:hep-th/9306122
[2] Erik Verlinde arXiv:hep-th/0412139


2) Dualidade AdS_2/CFT_1 e função de entropia quântica (dissertação)

AdS_2/CFT_1 duality and the quantum entropy function (thesis)

Abstract:

The quantum entropy function is a recent proposal [1] for computing the microstate degeneracy of extremal black holes. It is also related [2] to the AdS/CFT correspondence [3] that expresses the entropy of these black holes in terms of the ground state degeneracy of a dual quantum mechanical system.

[1] Ashoke Sen, arXiv:0805.0095
[2] Ashoke Sen, arXiv:0809.3304
[3] O. Aharony, S.S. Gubser, J. Maldacena, H. Ooguri, Y. Oz, arXiv:hep-th/9905111



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