Sound Velocity in Dense Matter Such as Neutron Stars

Oğurol, Leyla
Properties of matter at ultra-high density, called dense matter, is an important subject that has been studied theoretically and experimentally in recent years. In a very dense system, a composite matter consisting of nucleons, pions, hadrons would overlap, so the new form of matter constituting quarks and gluons would occur at a baryon density of around ten times the ordinary nuclear density. Such a transition could have appeared in the early universe during the first microsecond of the Big Bang, in the core of a Neutron Star, or during high energy collisions of massive nuclei in terrestrial particle accelerators. In this thesis, we will analyze some approaches addressing the equation of state (EoS) of dense matter. Specifically, the speed of sound, which is a complicated function of state functions such as density and pressure in dense matter, will be studied within various approaches by considering the fact that the speed of sound should not exceed the speed of light, which puts a constraint on possible equations of state.


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Citation Formats
L. Oğurol, “Sound Velocity in Dense Matter Such as Neutron Stars,” M.S. - Master of Science, Middle East Technical University, 2022.