Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-07-29
Phys.Rev. D68 (2003) 116007
Physics
High Energy Physics
High Energy Physics - Phenomenology
57 pages
Scientific paper
10.1103/PhysRevD.68.116007
We construct perturbative frameworks for studying nonequilibrium spin-polarized quark matter. We employ the closed-time-path formalism and use the gradient approximation in the derivative expansion. After constructing self-energy-part resummed quark and gluon propagators, we formulate two kind of mutually equivalent perturbative frameworks: The first one is formulated on the basis of the initial-particle distribution function, and the second one is formulated on the basis of `` physical''-particle distribution function. In the course of construction of the second framework, the generalized Boltzmann equations and their relatives {\em directly} come out, which describe the evolution of the system. The frameworks are relevant to the study of a magnetic character of quark matters, e.g., possible quark stars.
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