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Titolo:
Magnetic fields within color superconducting neutron star cores
Autore:
Alford, M; Berges, J; Rajagopal, K;
Indirizzi:
MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA MIT Cambridge MA USA 02139MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA
Titolo Testata:
NUCLEAR PHYSICS B
fascicolo: 1-2, volume: 571, anno: 2000,
pagine: 269 - 284
SICI:
0550-3213(20000403)571:1-2<269:MFWCSN>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
CRUSTAL PLATE-TECTONICS; X-RAY; EVOLUTION; MATTER; TRANSPORT; GLITCHES; BINARIES; DENSITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
52
Recensione:
Indirizzi per estratti:
Indirizzo: Alford, M MIT, Ctr Theoret Phys, 77 Massachusetts Ave, Cambridge, MA 02139USA MIT 77 Massachusetts Ave Cambridge MA USA 02139 ge, MA 02139 USA
Citazione:
M. Alford et al., "Magnetic fields within color superconducting neutron star cores", NUCL PHYS B, 571(1-2), 2000, pp. 269-284

Abstract

We discuss the Meissner effect for a color superconductor formed by cold dense quark matter. Though color and ordinary electromagnetism are broken ina color superconductor, there is a linear combination of the photon and a gluon that remains massless. Consequently, a color superconducting region may be penetrated by an external magnetic field. We show that at most a small fraction of the magnetic field is expelled, and if the screening distanceis the smallest length scale in the problem there is no expulsion at all. We calculate the behavior of the magnetic field for a spherical geometry relevant for compact stars. If a neutron star contains a quark matter core, this core is a color superconductor. Our results demonstrate that such coresadmit magnetic fields without restricting them to quantized flux tubes. Such magnetic fields within color superconducting neutron star cores are stable on time scales longer than the age of the universe, even if the spin period of the neutron star is changing. (C) 2000 Elsevier Science B.V. All rights reserved.

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Documento generato il 14/08/20 alle ore 08:12:13