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Sedrakian, D. M.; Blaschke, D.; Shahabasyan, K. M.; Voskresensky, D. N.

doi:10.1023/a:1012823913050

Cited by 12 publications

(16 citation statements)

References 14 publications

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“…The resultant energy corrections may possibly compete with the bulk corrections listed in Table I. Magnetic structures have been examined for boundaries of various shapes [11,12]. On the other hand, the influence of boundaries on rotational structures remains an interesting problem.…”

Section: Discussionmentioning

confidence: 99%

“…Table I summarizes our main conclusions on the responses and corresponding energies. In neutron stars, the presence of the isoscalar phase would affect the magnetic fields of the star via the combined effects of Meissner screening, London magnetic fields, and possible magnetic vortices [10][11][12], while the color-flavor locked phase could play a role [13] in the pinning and depinning of rotational vortices that give rise to pulsar glitches [14].…”

Section: Introductionmentioning

confidence: 99%

“…The response of the system to uniform magnetic fields is characterized by Meissner screening and free propagation of gluon-photon mixed fields, together with possible formation of magnetized vortices [10][11][12]. In clarifying the magnetic structures of the superconductor, we calculate the Ginzburg-Landau coherence length and the penetration depth, as well as the various critical fields.…”

Section: Introductionmentioning

confidence: 99%

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Superfluid phases of quark matter. III. Supercurrents and vortices

2002

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We study, within Ginzburg-Landau theory, the responses of three-flavor superfluid quark-gluon plasmas to external magnetic fields and rotation, in both the color-flavor locked and isoscalar colorantitriplet diquark phases near the critical temperature. Fields are incorporated in the gradient energy arising from long wavelength distortions of the condensate, via covariant derivatives to satisfy local gauge symmetries associated with color and electric charge. Magnetic vortex formation, in response to external magnetic fields, is possible only in the isoscalar phase; in the color-flavor locked phase, external magnetic fields are incompletely screened by the Meissner effect. On the other hand, rotation of the superfluid produces vortices in the color-flavor locked phase; in the isoscalar phase, it produces a London gluon-photon mixed field. We estimate the coherence and Meissner lengths and critical magnetic fields for the two phases.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Superfluid phases of quark matter. III. Supercurrents and vortices

2002

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“…Depending on the ratio of the X -flux penetration depth to the coherence length of the condensate, the 2SC phase may be type-I or type-II with respect to the X magnetic field [24,25]. A superconductor is of type II if it obeys the condition κ ≡ λ /ξ > 1/ √ 2, where κ is the Ginzburg-Landau (GL) parameter, λ is the penetration depth, and ξ is the coherence length of the superconductor.…”

Section: Color-magnetic Flux Tubesmentioning

confidence: 99%

Cold quark matter in astrophysics of compact stars

Sedrakian¹,

Angelini²,

Colangelo³

et al. 2010

AIP Conference Proceedings

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“…The existence of the magnetic Meissner effect in colour superconductors is a matter of some debate (Alford et al 2000;Sedrakian et al 2001;Iida & Baym 2002) but we will proceed on the assumption that there is a Meissner effect in the CFL phase, and that at least part of the magnetic field is expelled from the surface layers of the star. The model we consider assumes that the star intially consists of uniform density strange quark matter with an associated surface electric field Alcock et al (1986).…”

Section: Giant Burst: Expulsion and Decay Of The Magnetic Fieldmentioning

confidence: 99%

Meissner effect and vortex dynamics in quark stars

Ouyed

Elgarøy

Dahle

et al. 2004

A&A

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Abstract. We present a new model for soft gamma-ray repeaters based on a quark star born with temperatures above the critical value (T c ) for the onset of the colour-flavor locked superconductivity. The quark star then quickly cools below T c , expelling a fraction of the surface magnetic field via the Meissner effect. We show that if a small fraction (≤10%) of the surface magnetic field (10 14 −10 15 G) is expelled, it quickly decays via magnetic reconnection and heats up the quark star surface to temperatures >10 9 K. Created (e + , e − ) pairs annihilate into gamma rays emitted in a giant burst (the first burst in our model), with a luminosity of ∼10 45 erg s −1 . Subsequent bursts result from the restructuring of the surface magnetic field following the formation and relaxation of a vortex lattice which confines the internal magnetic field. During this phase, energy is sporadically released as a consequence of magnetic reconnection events in the entangled surface magnetic field as it evolves into a smooth, more stable, configuration. The star eventually enters a quiescent phase in which energy is continuously supplied by vortex annihilation at the surface. As the star spins down, the outermost vortex lines will be pushed to the surface where they annihilate and release their confined magnetic field. We show that the corresponding luminosity is L v ∼ 10 36 erg s −1 for a typical soft gamma-ray repeater spinning with a period of 8 s and a surface magnetic field not exceeding 10 15 G. Our model can be applied to any situation where a T > T c quark star is generated. We discuss the connection between anomalous X-ray pulsars and soft gamma-ray repeaters in the context of our model.

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Cited by 12 publications

References 14 publications

Superfluid phases of quark matter. III. Supercurrents and vortices

Superfluid phases of quark matter. III. Supercurrents and vortices

Cold quark matter in astrophysics of compact stars

Meissner effect and vortex dynamics in quark stars

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