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Nuclear Theory·nucl-th

Monday·December 3, 2018

6 papers—2 primary·4 cross-listed

All6Primary2Cross-lists4
  1. 01

    Quarkyonic Matter and Neutron Stars

    Larry McLerran🇺🇸 · Sanjay Reddy🇺🇸

    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 , 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 non-monotonic function of density -- it reaches a maximum at relatively low density, decreases, and then increases again to its asymptotic value of .

    nucl-thPRL(2019)·397 citations
  2. 02

    Light vector mesons (, and ) in strong magnetic fields: A QCD sum rule approach

    Amruta Mishra🇮🇳 · Ankit Kumar🇮🇳 · Pallabi Parui🇮🇳 · Sourodeep De🇮🇳

    The mass modifications of the light vector mesons (, and ) are investigated in asymmetric nuclear matter in the presence of strong magnetic fields, using a QCD sum rule approach. These are computed from the medium modifications of the non-strange and strange light quark condensates as well as scalar gluon condensate. The quark and gluon condensates are calculated from the medium changes of the scalar fields (non-strange and strange) and a scalar dilaton field in the magnetized nuclear matter, within a chiral SU(3) model. The scalar dilaton field within the model breaks the scale invariance of QCD and simulates the gluon condensate. The anomalous magnetic moments for the nucleons are taken into account in the present study.

    nucl-thhep-phPRC(2019)·17 citations

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first authorsco-authorsvia INSPIRE