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- W3104369971 abstract "We consider a Dirac field on a $(1 + 2)$-dimensional uncharged BTZ black hole background. We first find out the Dirac Hamiltonian, and study its self-adjointness properties. We find that, in analogy to the Kerr-Newman-AdS Dirac Hamiltonian in $(1+3)$ dimensions, essential self-adjointness on $C_0^{infty}(r_+,infty)^2$ of the reduced (radial) Hamiltonian is implemented only if a suitable relation between the mass $mu$ of the Dirac field and the cosmological radius $l$ holds true. The very presence of a boundary-like behaviour of $r=infty$ is at the root of this problem. Also, we determine in a complete way qualitative spectral properties for the non-extremal case, for which we can infer the absence of quantum bound states for the Dirac field. Next, we investigate the possibility of a quantum loss of angular momentum for the $(1 + 2)$-dimensional uncharged BTZ black hole. Unlike the corresponding stationary four-dimensional solutions, the formal treatment of the level crossing mechanism is much simpler. We find that, even in the extremal case, no level crossing takes place. Therefore, no quantum loss of angular momentum via particle pair production is allowed." @default.
- W3104369971 created "2020-11-23" @default.
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- W3104369971 date "2010-12-08" @default.
- W3104369971 modified "2023-10-16" @default.
- W3104369971 title "Quantum properties of the Dirac field on BTZ black hole backgrounds" @default.
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- W3104369971 doi "https://doi.org/10.1088/1751-8113/44/2/025202" @default.
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