RT Journal Article
T1 BPS Skyrmions as neutron stars
A1 Adam, Christoph
A1 Naya Rodríguez, Carlos
A1 Sánchez Guillén, José Joaquín
A1 Vázquez López, Ricardo Antonio
A1 Wereszczynski, Andrzej
AB The BPS Skyrme model has been demonstrated already to provide a physically intriguing and quantita-tively reliable description of nuclear matter. Indeed, the model has both the symmetries and the energy–momentum tensor of a perfect fluid, and thus represents a field theoretic realization of the “liquid droplet” model of nuclear matter. In addition, the classical soliton solutions together with some obvious corrections (spin–isospin quantization, Coulomb energy, proton–neutron mass difference) provide an accurate modeling of nuclear binding energies for heavier nuclei. These results lead to the rather natural proposal to try to describe also neutron stars by the BPS Skyrme model coupled to gravity. We find that the resulting self-gravitating BPS Skyrmions provide excellent results as well as some new perspectives for the description of bulk properties of neutron stars when the parameter values of the model are extracted from nuclear physics. Specifically, the maximum possible mass of a neutron star before black-hole formation sets in is a few solar masses, the precise value of which dependson the precise values of the model parameters, and the resulting neutron star radius is of the order of 10 km
PB Elsevier
SN 0370-2693
YR 2015
FD 2015
LK http://hdl.handle.net/10347/21367
UL http://hdl.handle.net/10347/21367
LA eng
NO Adam, C., Naya, C., Sanchez-Guillen, J., Vazquez, R. and Wereszczynski, A., 2015. BPS Skyrmions as neutron stars. Physics Letters B, 742, 136-142
DS Minerva
RD 22 abr 2026