Journal
PHYSICAL REVIEW D
Volume 98, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.98.034031
Keywords
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Funding
- National Natural Science Foundation of China [11705163, 11621131001, 11575201, 11575190, 11525524, 11505157, 11475110]
- Physics Research and Development Program of Zhengzhou University [32410017]
- U.S. National Science Foundation [PHY 1608959]
- HPC Cluster of SKLTP/ITP-CAS
- Supercomputing Center, CNIC, of the CAS
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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-circle dot strange star, the surface tension is similar to 2.4 MeV= fm(2), 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.
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