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this paper
Do Black Holes End up as Quark Stars ?
R.K.Thakur
(Submitted on 25 Feb 2007)
The possibility of the existence of quark stars has been discussed by several authors since 1970. Recently, it has been pointed out that two putative neutron stars, RXJ 1856.5 - 3754 in Corona Australis and 3C58 in Cassiopeia are too small and too dense to be neutron stars; they show evidence of being quark stars. Apart from these two objects, there are several other compact objects which fit neither in the category of neutron stars nor in that of black holes. It has been suggested that they may be quark stars.In this paper it is shown that a black hole cannot collapse to a singularity, instead it may end up as a quark star. In this context it is shown that a gravitationally collapsing black hole acts as an ultrahigh energy particle accelerator, hitherto inconceivable in any terrestrial laboratory, that continually accelerates particles comprising the matter in the black hole. When the energy \textit{E} of the particles in the black hole is ≥102GeV, or equivalently the temperature \textit{T} of the matter in the black holes is ≥1015K, the entire matter in the black hole will be converted into quark-gluon plasma permeated by leptons. Since quarks and leptons are spin 1/2 particles,they are governed by Pauli's exclusion principle. Consequently, one of the two possibilities will occur; either Pauli's exclusion principle would be violated and the black hole would collapse to a singularity, or the collapse of the black hole to a singularity would be inhibited by Pauli's exclusion principle, and the black hole would eventually explode with a mini bang of a sort. After explosion, the remnant core would stabilize as a quark star.
Comments: 6 pages
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0702671
(or arXiv:astro-ph/0702671v1 for this version) If this paper's conclusion is correct, and collapsing stars result in quark stars rather than black holes, that gravity cannot overcome fermion quark Pauli's exclusion principle astrophysical black holes are really quark stars. increasing its density simply results in excess energy being radiated away.
if the paper is correct, how would this affect black hole physics and quantum gravity theories? how would this effect black hole entropy, black hole information paradox, black hole firewalls, hawking radiation, event horizon, reconciling gravity with quantum mechanics, if black holes are actually quark stars as argued in the paper.
specifically, how would hawking calculation of hawking radiation, black hole entropy, structure of spacetime, holographic principle be modified if
every astrophysical "black hole" is actually a quark star, general relativity and gravity cannot over come Pauli exclusion principle of fermions, and that quark degenerate matter, quark-gluon plasma represents the upper limit possible for density as argued in paper above. above this density the quark gluon plasma simply radiates away excess energy.
string theory and lqg
Do Black Holes End up as Quark Stars ?
R.K.Thakur
(Submitted on 25 Feb 2007)
The possibility of the existence of quark stars has been discussed by several authors since 1970. Recently, it has been pointed out that two putative neutron stars, RXJ 1856.5 - 3754 in Corona Australis and 3C58 in Cassiopeia are too small and too dense to be neutron stars; they show evidence of being quark stars. Apart from these two objects, there are several other compact objects which fit neither in the category of neutron stars nor in that of black holes. It has been suggested that they may be quark stars.In this paper it is shown that a black hole cannot collapse to a singularity, instead it may end up as a quark star. In this context it is shown that a gravitationally collapsing black hole acts as an ultrahigh energy particle accelerator, hitherto inconceivable in any terrestrial laboratory, that continually accelerates particles comprising the matter in the black hole. When the energy \textit{E} of the particles in the black hole is ≥102GeV, or equivalently the temperature \textit{T} of the matter in the black holes is ≥1015K, the entire matter in the black hole will be converted into quark-gluon plasma permeated by leptons. Since quarks and leptons are spin 1/2 particles,they are governed by Pauli's exclusion principle. Consequently, one of the two possibilities will occur; either Pauli's exclusion principle would be violated and the black hole would collapse to a singularity, or the collapse of the black hole to a singularity would be inhibited by Pauli's exclusion principle, and the black hole would eventually explode with a mini bang of a sort. After explosion, the remnant core would stabilize as a quark star.
Comments: 6 pages
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0702671
(or arXiv:astro-ph/0702671v1 for this version) If this paper's conclusion is correct, and collapsing stars result in quark stars rather than black holes, that gravity cannot overcome fermion quark Pauli's exclusion principle astrophysical black holes are really quark stars. increasing its density simply results in excess energy being radiated away.
if the paper is correct, how would this affect black hole physics and quantum gravity theories? how would this effect black hole entropy, black hole information paradox, black hole firewalls, hawking radiation, event horizon, reconciling gravity with quantum mechanics, if black holes are actually quark stars as argued in the paper.
specifically, how would hawking calculation of hawking radiation, black hole entropy, structure of spacetime, holographic principle be modified if
every astrophysical "black hole" is actually a quark star, general relativity and gravity cannot over come Pauli exclusion principle of fermions, and that quark degenerate matter, quark-gluon plasma represents the upper limit possible for density as argued in paper above. above this density the quark gluon plasma simply radiates away excess energy.
string theory and lqg
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