Black hole entropy as T-duality invariant

Details Black hole entropy as T-duality invariant Black hole entropy as T-duality invariant

1997-12-24

arxiv.org/abs/hep-th/9712224v2

Phys.Rev. D58 (1998) 064025

Physics

High Energy Physics

High Energy Physics - Theory

15 pages, Revtex

Scientific paper

10.1103/PhysRevD.58.064025

We study the Euler numbers and the entropies of the non-extremal intersecting D-branes in ten-dimensions. We use the surface gravity to constrain the compactification radii. We correctly obtain the integer valued Euler numbers for these radii. Moreover, the entropies are found to be invariant under the T-duality transformation. In the extremal limit, we obtain the finite entropies only for two intersecting D-branes. We observe that these entropies are proportional to the product of the charges of each D-brane. We further study the entropies of the boosted metrics. We find that their entropies can be interpreted in term of the microscopic states of D-branes.

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