Quarkyonic Matter and Neutron Stars

McLerran, Larry; Reddy, Sanjay

doi:10.1103/physrevlett.122.122701

Quarkyonic Matter and Neutron Stars

Journal Article · Tue Mar 26 00:00:00 EDT 2019 · Physical Review Letters

DOI:https://doi.org/10.1103/physrevlett.122.122701· OSTI ID:1609325

McLerran, Larry ^[1]; Reddy, Sanjay ^[2]

Univ. of Washington, Seattle, WA (United States); DOE/OSTI
Univ. of Washington, Seattle, WA (United States)

We consider quarkyonic matter to naturally explain the observed properties of neutron stars. We argue that such matter might exist at densities close to that of nuclear matter, and at the onset, the pressure and the sound velocity in quarkyonic matter increase rapidly. In the limit of large number of quark colors N_c, this transition is characterized by a discontinuous change in pressure as a function of baryon number density. We make a simple model of quarkyonic matter and show that generically the sound velocity is a nonmonotonic function of density—it reaches a maximum at relatively low density, decreases, and then increases again to its asymptotic value of 1/√3 .

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Washington, Seattle, WA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: FG02-00ER41132

OSTI ID:: 1609325

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 12 Vol. 122; ISSN 0031-9007; ISSN PRLTAO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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