Geodesic
Black holes and particles with zero or negative energy
Teoretičeskaâ i matematičeskaâ fizika, Tome 190 (2017) no. 2, pp. 312-324

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We study properties of particles with zero or negative energy and a nonzero orbital angular momentum in the ergosphere of a rotating black hole. We show that the sign of the particle energy is uniquely determined by the angular velocity of its rotation in the ergosphere. We give a simple proof of the fact that extreme black holes cannot exist. We investigate the question of the possibility of an unlimited energy increase in the center-of-mass system of two colliding particles, one or both of which have negative or zero energy.
Keywords: black hole, Kerr metric, negative-energy particle, geodesic.
Mots-clés : particle collision 
@article{TMF_2017_190_2_a7,
     author = {A. A. Grib and Yu. V. Pavlov},
     title = {Black holes and particles with zero or negative energy},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {312--324},
     publisher = {mathdoc},
     volume = {190},
     number = {2},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2017_190_2_a7/}
}
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A. A. Grib; Yu. V. Pavlov. Black holes and particles with zero or negative energy. Teoretičeskaâ i matematičeskaâ fizika, Tome 190 (2017) no. 2, pp. 312-324. http://geodesic.mathdoc.fr/item/TMF_2017_190_2_a7/