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Incompressibility of strange matter |
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| Authors: | Monika Sinha Manjari Bagchi Jishnu Dey Mira Dey Subharthi Ray Siddhartha Bhowmick |
| Institution: | a Deptartment of Physics, Presidency College, 86/1 College Street, Kolkata 700073, India b Deptartment of Physics, Maulana Azad College, 8 Rafi Ahmed Kidwai Road, Kolkata 700013, India c Inter University Centre for Astronomy and Astrophysics, Post bag 4, Ganeshkhind, Pune 411007, India d Department of Physics, Barasat Government College, Kolkata 700124, India |
| Abstract: | Strange stars (ReSS) calculated from a realistic equation of state (EOS), that incorporate chiral symmetry restoration as well as deconfinement at high density Phys. Lett. B 438 (1998) 123; Phys. Lett. B 447 (1999) 352, Addendum; Phys. Lett. B 467 (1999) 303, Erratum; Indian J. Phys. B 73 (1999) 377] show compact objects in the mass radius curve. We compare our calculations of incompressibility for this EOS with that of nuclear matter. One of the nuclear matter EOS has a continuous transition to ud-matter at about five times normal density. Another nuclear matter EOS incorporates density dependent coupling constants. From a look at the consequent velocity of sound, it is found that the transition to ud-matter seems necessary. |
| Keywords: | Compact stars Realistic strange stars Dense matter Elementary particles Equation of state |
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