Strings in Horizons, Dissipation and a Possible Interpretation of the Hagedorn Temperature

Abdalla, M. C. Batoni; Cantcheff, M. Botta; Nedel, D. L.

Strings in Horizons, Dissipation and a Possible Interpretation of the Hagedorn Temperature

Authors

Abdalla, M. C. Batoni

Cantcheff, M. Botta

Nedel, D. L.

Description

We consider the entanglement of closed bosonic strings intersecting the event horizon of a Rindler spacetime and, by using some simplified (rather semiclassical) arguments and some elements of the string field theory, we show the existence of a critical temperature beyond which closed strings \emph{cannot be in thermal equilibrium}. The order of magnitude of this critical value coincides with the Hagedorn temperature, which suggests an interpretation consistent with the fact of having a partition function which is bad defined for temperatures higher than it. Possible implications of the present approach on the microscopical structure of stretched horizons are also pointed out.
A detailed description of string boundary states in a Rindler horizon was added, and their relation with the stretched horizon microscopic structure was emphasized. References added. To appear in Eur. Phys. J. C