Massless radiation from heavy rotating string and Kerr/string correspondence

Details Massless radiation from heavy rotating string and Kerr/string correspondence Massless radiation from heavy rotating string and Kerr/string correspondence

2009-09-09

arxiv.org/abs/0909.1617v2

Nucl.Phys.B827:217-236,2010

Physics

High Energy Physics

High Energy Physics - Theory

21 pages, minor corrections, version to appear in Nucl.Phys. B

Scientific paper

10.1016/j.nuclphysb.2009.10.026

We calculate emission rates of a massless state from a highly excited rotating string in perturbative bosonic open string theory. By averaging huge degeneracies of initial string states with specifying the mass and a single component of the angular momentum, we find thermal spectrum in a wide range of the angular momentum. We derive the temperature that characterizes the thermal spectrum from the partition function of a single rotating string from which we also find the entropy and the angular velocity of rotating strings. We also argue based on these quantities the Horowitz-Polchinski correspondence principle between rotating strings/Kerr black holes for non-extremal as well as extremal cases. In the parameter region where the Kerr black holes exist, the thermal spectrum is comparable to scalar emissions from a rotating black hole.

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