Full metadata record
DC Field | Value | Language |
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dc.contributor.author | 임연환 | - |
dc.date.accessioned | 2021-08-12T16:30:53Z | - |
dc.date.available | 2021-08-12T16:30:53Z | - |
dc.date.issued | 2021 | - |
dc.identifier.issn | 2469-9985 | - |
dc.identifier.issn | 2469-9993 | - |
dc.identifier.other | OAK-30021 | - |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/258576 | - |
dc.description.abstract | We study the S-1(0) proton pairing gap in beta-equilibrated neutron star matter within the framework of chiral effective field theory. We focus on the role of three-body forces, which strongly modify the effective proton-proton spin-singlet interaction in dense matter. We find that three-body forces generically reduce both the size of the pairing gap and the maximum density at which proton pairing may occur. The pairing gap is computed within Bardeen-Cooper-Schrieffer theory using a single-particle dispersion relation calculated up to second order in perturbation theory. Model uncertainties are estimated by varying the nuclear potential (its order in the chiral expansion and high-momentum cutoff) and the choice of single-particle spectrum in the gap equation. We find that a second-order perturbative treatment of the single-particle spectrum suppresses the proton S-1(0) pairing gap relative to the use of a free spectrum. We estimate the critical temperature for the onset of proton superconductivity to be T-c = (3.2-5.1) x 10(9) K, which is consistent with previous theoretical results in the literature and marginally within the range deduced from a recent Bayesian analysis of neutron star cooling observations. | - |
dc.language | English | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.title | Proton pairing in neutron stars from chiral effective field theory | - |
dc.type | Article | - |
dc.relation.issue | 2 | - |
dc.relation.volume | 103 | - |
dc.relation.index | SCIE | - |
dc.relation.index | SCOPUS | - |
dc.relation.journaltitle | PHYSICAL REVIEW C | - |
dc.identifier.doi | 10.1103/PhysRevC.103.025807 | - |
dc.identifier.wosid | WOS:000620346400005 | - |
dc.author.google | Lim, Yeunhwan | - |
dc.author.google | Holt, Jeremy W. | - |
dc.contributor.scopusid | 임연환(55774205900) | - |
dc.date.modifydate | 20230208114544 | - |