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arXiv · hep-th/9902058

String Thermodynamics in D-Brane Backgrounds

S. A. Abel·J. L. F. Barbon·I. I. Kogan·E. Rabinovici
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Abstract

We discuss the thermal properties of string gases propagating in various D-brane backgrounds in the weak-coupling limit, and at temperatures close to the Hagedorn temperature. We determine, in the canonical ensemble, whether the Hagedorn temperature is limiting or non-limiting. This depends on the dimensionality of the D-brane, and the size of the compact dimensions. We find that in many cases the non-limiting behaviour manifest in the canonical ensemble is modified to a limiting behaviour in the microcanonical ensemble and show that, when there are different systems in thermal contact, the energy flows into open strings on the `limiting' D-branes of largest dimensionality. Such energy densities may eventually exceed the D-brane intrinsic tension. We discuss possible implications of this for the survival of Dp-branes with large values of p in an early cosmological Hagedorn regime. We also discuss the general phase diagram of the interacting theory, as implied by the holographic and black-hole/string correspondence principles.

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S. A. Abel, J. L. F. Barbon, I. I. Kogan, E. Rabinovici. 1999-03-08. String Thermodynamics in D-Brane Backgrounds. https://doi.org/10.1088/1126-6708%2F1999%2F04%2F015

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