BH7 - Black Holes in Higher Dimensions (Black Rings and Black Strings) |
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Speaker |
Maia, Clovis |
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Coauthors |
Maia, Clovis |
| Talk Title |
Hawking Radiation in Black Holes with Torsion |
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Abstract |
Theories of gravity with torsion have been in consideration since the inception of general relativity. Many of the observable effects arising from torsion are negligible for most known astrophysical settings, leading to consideration of other possible scenarios, such as cosmological singularities with high spin density fluids, or classical and quantum effects due to spin-torsion coupling of gyroscopes and Dirac particles in strong and weak field regimes. Condensed matter physics may offer yet another window to probe torsion gravity, as defects in liquid crystals and vortices in fluids, for example, have been previously considered as sources of torsion in their gravitational analogues counterpart. To the best of our knowledge, such analogue gravity models with torsion have been only explored in their classical regime, without proper consideration of the implications of torsion to the emission of Hawking radiation in solutions with horizons. We here present a reanalysis of Hawking radiation in the presence of generic background torsion, taking in account only quantum fields allowed by renormalization. We show that torsion may change the Hawking spectra and flux. Though its contribution is negligible for most realistic astrophysical black hole scenarios, it may be observable for analogue black holes in laboratory. |
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