Negative modes and the thermodynamics of Reissner-Nordstrom black holes

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• Jorge Santos (DAMTP, Cambridge)
• Friday 23 January 2009, 13:00-14:00
• Pavilion B Potter Room (B1.19).

If you have a question about this talk, please contact Dr H K Kunduri.

We analyse the problem of negative modes of the Euclidean section of the Reissner-Nordstr\”om black hole in four dimensions. We find analytically that a negative mode disappears when the specific heat at constant charge becomes positive. The sector of perturbations analysed here is included in the canonical partition function of the magnetically charged black hole. The result obeys the usual rule that the partition function is only well-defined when there is local thermodynamical equilibrium. We point out the difficulty in quantising Einstein-Maxwell theory, where the so-called conformal factor problem is considerably more intricate. Our method, inspired by hep-th/0608001, allows us to decouple the divergent gauge volume and treat the metric perturbations sector in a gauge-invariant way

This talk is part of the DAMTP Friday GR Seminar series.

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