Spin, torsion and violation of null energy condition in traversable wormholes
INFN, Sezione di Napoli, Complesso Univ. Monte S. Angelo, I-80126, Napoli, Italy
2 Dipartimento di Fisica Ettore Pancini, Università di Napoli Federico II, Complesso Univ. di Monte S. Angelo, I-80126, Napoli, Italy
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Accepted: 16 November 2017
Published online: 22 December 2017
The static spherically symmetric traversable wormholes are analysed in the Einstein-Cartan theory of gravitation. In particular, we computed the torsion tensor for matter fields with different spin . Interestingly, only for certain values of the spin, the torsion contribution to the Einstein-Cartan field equation allows one to satisfy both flaring-out condition and null energy condition. In this scenario, traversable wormholes can be produced by using usual (non-exotic) spinning matter.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2017