Interface effects of strange quark matter with density dependent quark masses

We study the interface effects in strangelets adopting mean-field approximation (MFA). Based on an equivparticle model, the linear confinement and leading-order perturbative interactions are included with density-dependent quark masses. By increasing the confinement strength, the surface tension and...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. D 2018-08, Vol.98 (3), Article 034031
Main Authors: Xia, Cheng-Jun, Peng, Guang-Xiong, Sun, Ting-Ting, Guo, Wan-Lei, Lu, Ding-Hui, Jaikumar, Prashanth
Format: Article
Language:English
Subjects:
Confinement
Curvature
Damping
Quarks
Surface tension
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We study the interface effects in strangelets adopting mean-field approximation (MFA). Based on an equivparticle model, the linear confinement and leading-order perturbative interactions are included with density-dependent quark masses. By increasing the confinement strength, the surface tension and curvature term of strange quark matter (SQM) become larger, while the perturbative interaction does the opposite. For those parameters constrained according to the 2  M⊙ strange star, the surface tension is ∼2.4  MeV/fm2, while unstable SQM indicates a slightly larger surface tension. The obtained results are then compared with those predicted by the multiple reflection expansion (MRE) method. In contrast to the bag model case, it is found that MRE method overestimates the surface tension and underestimates the curvature term. To reproduce our results, the density of states in the MRE approach should be modified by proper damping factors.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.98.034031