Some considerations about NS5 and LST Hawking radiation
arXiv:1107.0713 · doi:10.1016/j.physletb.2011.08.052
Abstract
We have studied the Hawking radiation corresponding to the NS5 and Little String Theory (LST) black hole models using two semi-classical methods: the complex path method and a gravitational anomaly. After summarizing some known concepts about the thermodynamics of these theories, we have computed the emission rates for the two black hole models. The temperature calculated from, e.g. the well-known surface gravity expression, is shown to be identical to that obtained from both the computation of the gravitational anomaly and the complex path method. Moreover, the two semi-classical methods show that NS5 exhibits non-thermal behavior that contrasts with the thermal behavior of LST. We remark that energy conservation is the key factor leading to a non-thermal profile for NS5. In contrast, LST keeps a thermal profile even when energy conservation is considered because temperature in this model does not depend on energy.
18 pages, acknowledgments included, some concepts clarified, typos corrected, journal reference included
References in corpus (9)
- Hawking Radiation from Charged Black Holes via Gauge and Gravitational Anomalies
- Hawking black body spectrum from tunneling mechanism
- Entropy is Conserved in Hawking Radiation as Tunneling: a Revisit of the Black Hole Information Loss Paradox
- A WKB-like approach to Unruh Radiation
- Notes on a SQCD-like plasma dual and holographic renormalization
- Covariant Anomalies, Horizons and Hawking Radiation
- A silence black hole: Hawking radiation at the Hagedorn temperature
- Davies Critical Point and Tunneling
- A note on the string spectrum at the Hagedorn temperature