The University of Southampton
University of Southampton Institutional Repository

New color-magnetic defects in dense quark matter

New color-magnetic defects in dense quark matter
New color-magnetic defects in dense quark matter
Color-flavor locked (CFL) quark matter expels color-magnetic fields due to the Meissner effect. One of these fields carries an admixture of the ordinary abelian magnetic field and therefore flux tubes may form if CFL matter is exposed to a magnetic field, possibly in the interior of neutron stars or in quark stars. We employ a Ginzburg-Landau approach for three massless quark flavors, which takes into account the multi-component nature of color superconductivity. Based on the weak-coupling expressions for the Ginzburg-Landau parameters, we identify the regime where CFL is a type-II color superconductor and compute the radial profiles of different color-magnetic flux tubes. Among the configurations without baryon circulation we find a new solution that is energetically preferred over the flux tubes previously discussed in the literature in the parameter regime relevant for compact stars. Within the same setup, we also find a new defect in the 2SC phase, namely magnetic domain walls, which emerge naturally from the previously studied flux tubes if a more general ansatz for the order parameter is used. Color-magnetic defects in the interior of compact stars allow for sustained deformations of the star, potentially strong enough to produce detectable gravitational waves.
hep-ph, astro-ph.HE, nucl-th
0954-3899
Haber, Alexander
e3efa42e-1632-49b5-9fb3-813d8a4c9af3
Schmitt, Andreas
1765159f-255f-45e7-94ea-58c1c883d65f
Haber, Alexander
e3efa42e-1632-49b5-9fb3-813d8a4c9af3
Schmitt, Andreas
1765159f-255f-45e7-94ea-58c1c883d65f

Haber, Alexander and Schmitt, Andreas (2018) New color-magnetic defects in dense quark matter. Journal of Physics G: Nuclear and Particle Physics, 45 (6). (doi:10.1088/1361-6471/aabc1a).

Record type: Article

Abstract

Color-flavor locked (CFL) quark matter expels color-magnetic fields due to the Meissner effect. One of these fields carries an admixture of the ordinary abelian magnetic field and therefore flux tubes may form if CFL matter is exposed to a magnetic field, possibly in the interior of neutron stars or in quark stars. We employ a Ginzburg-Landau approach for three massless quark flavors, which takes into account the multi-component nature of color superconductivity. Based on the weak-coupling expressions for the Ginzburg-Landau parameters, we identify the regime where CFL is a type-II color superconductor and compute the radial profiles of different color-magnetic flux tubes. Among the configurations without baryon circulation we find a new solution that is energetically preferred over the flux tubes previously discussed in the literature in the parameter regime relevant for compact stars. Within the same setup, we also find a new defect in the 2SC phase, namely magnetic domain walls, which emerge naturally from the previously studied flux tubes if a more general ansatz for the order parameter is used. Color-magnetic defects in the interior of compact stars allow for sustained deformations of the star, potentially strong enough to produce detectable gravitational waves.

Text
1712.08587v2 - Accepted Manuscript
Download (1MB)

More information

Accepted/In Press date: 6 April 2018
e-pub ahead of print date: 19 April 2018
Published date: June 2018
Additional Information: 29 pages, 5 figures, v2: small modifications in the text, version accepted for publication in Journal of Physics G
Keywords: hep-ph, astro-ph.HE, nucl-th

Identifiers

Local EPrints ID: 420205
URI: https://eprints.soton.ac.uk/id/eprint/420205
ISSN: 0954-3899
PURE UUID: 88335223-ba22-4170-8c2e-06db6895e65e

Catalogue record

Date deposited: 02 May 2018 16:30
Last modified: 20 Apr 2019 04:01

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×