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Universe 2016, 2(2), 8; doi:10.3390/universe2020008

Black Holes and Exotic Spinors

1
Departamento de Física e Química, Universidade Estadual Paulista, Guaratinguetá, São Paulo 19060-900, Brazil
2
Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, UFABC, 09210-580 Santo André, Brazil
*
Author to whom correspondence should be addressed.
Academic Editor: Gonzalo J. Olmo
Received: 24 March 2016 / Revised: 11 May 2016 / Accepted: 17 May 2016 / Published: 26 May 2016
(This article belongs to the Collection Open Questions in Black Hole Physics)
View Full-Text   |   Download PDF [408 KB, uploaded 26 May 2016]   |  

Abstract

Exotic spin structures are non-trivial liftings, of the orthogonal bundle to the spin bundle, on orientable manifolds that admit spin structures according to the celebrated Geroch theorem. Exotic spin structures play a role of paramount importance in different areas of physics, from quantum field theory, in particular at Planck length scales, to gravity, and in cosmological scales. Here, we introduce an in-depth panorama in this field, providing black hole physics as the fount of spacetime exoticness. Black holes are then studied as the generators of a non-trivial topology that also can correspond to some inequivalent spin structure. Moreover, we investigate exotic spinor fields in this context and the way exotic spinor fields branch new physics. We also calculate the tunneling probability of exotic fermions across a Kerr-Sen black hole, showing that the exotic term does affect the tunneling probability, altering the black hole evaporation rate. Finally we show that it complies with the Hawking temperature universal law. View Full-Text
Keywords: exotic spinor; black holes exotic spinor; black holes
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da Silva, J.M.H.; Villalobos, C.H.C.; da Rocha, R. Black Holes and Exotic Spinors. Universe 2016, 2, 8.

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