Adam, ChristophNaya Rodríguez, CarlosSánchez Guillén, José JoaquínVázquez López, Ricardo AntonioWereszczynski, Andrzej2020-04-142020-04-142015Adam, C., Naya, C., Sanchez-Guillen, J., Vazquez, R. and Wereszczynski, A., 2015. BPS Skyrmions as neutron stars. Physics Letters B, 742, 136-1420370-2693http://hdl.handle.net/10347/21367The 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 kmeng© 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)http://creativecommons.org/licenses/by/4.0/journal article10.1016/j.physletb.2015.01.0271873-2445open access