Abstract
We calculate the particle ratios K+/π+, K-/π-, and Λ/π- for a strongly interacting hadronic matter using nonlinear Walecka model (NLWM) in relativistic mean field (RMF) approximation. It is found that interactions among hadrons modify K+/π+ and Λ/π- particle ratios, while K-/π- is found to be insensitive to these interactions.
Highlights
Since the discovery of asymptotic freedom [1] in case of nonabelian gauge field theories, it was postulated that a phase transition from nuclear state of matter to quark matter is possible
It was further argued that this phase transition can take place at sufficiently high temperature and/or densities and can result in the transformations of hadrons into a new state of matter dubbed as quark-gluon plasma (QGP)
In order to study the dynamics of any phase transition in general, a complete description of a given state of matter on the basis of some underlying theory is required
Summary
Since the discovery of asymptotic freedom [1] in case of nonabelian gauge field theories, it was postulated that a phase transition from nuclear state of matter to quark matter is possible. It was further argued that this phase transition can take place at sufficiently high temperature and/or densities and can result in the transformations of hadrons into a new state of matter dubbed as quark-gluon plasma (QGP). The description of strongly interacting hadronic phase in terms of fundamental theory of strong interactions has proven to be far from being trivial. One can use another approach to determine the dynamics of strongly interacting hadronic phase and of quark-hadron phase transition. We evaluate the particle ratios K+/π+, K−/π−, and Λ/π− for a strongly interacting hadronic matter and analyse their behaviour near first-order quark-hadron phase transition. To describe the quark-gluon plasma (QGP) phase, we use a Bag model equation of state
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