https://doi.org/10.1140/epja/i2013-13001-4
Regular Article - Theoretical Physics
Strange baryonic matter in the Thomas-Fermi theory
1
Department of Physics, University of Tehran, P.O.B 14395-547, Tehran, Iran
2
Department of Physics, Faculty of Science, University of Kashan, P.O.B 87317-51167, Kashan, Iran
* e-mail: hmoshfegh@ut.ac.ir
Received:
29
June
2012
Revised:
10
September
2012
Accepted:
28
September
2012
Published online:
7
January
2013
On the basis of the Thomas-Fermi approximation as a semi-classical mean-field method, by constructing hyperon-nucleon interaction, we find a phenomenological equation of state (EOS) for 
-stable baryonic matter. Our findings have profound consequences for neutron stars (NS) properties and compositions. Among these consequences, strange hyperons in the baryonic structure produce a strong softening of the EOS and also reduce the corresponding maximum mass of neutron stars. We also study hadron-quark phase transition in the interior of neutron stars by using the MIT bag model for the quark phase. We have found that NS have a large population of baryons but they are not dense enough to form a pure quark phase structure in the interior.
© SIF, Springer-Verlag Berlin Heidelberg, 2013
