The Renormalized Thermal Mass with Non-Zero Charge Density

Details The Renormalized Thermal Mass with Non-Zero Charge Density The Renormalized Thermal Mass with Non-Zero Charge Density

2000-05-08

arxiv.org/abs/hep-th/0005069v1

Nucl.Phys.B594:518-532,2001

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, 7 figures

Scientific paper

10.1016/S0550-3213(00)00662-3

The linear $\delta$ expansion is used to obtain corrections up to O$(\delta^2)$ to the self-energy for a complex scalar field theory with a $\lambda (\phi^{\star}\phi)^2$ interaction at high temperature and non-zero charge density. The calculation is done in the imaginary-time formalism via the Hamiltonian form of the path integral. Nonperturbative results are generated by a systematic order by order variational procedure and the dependence of the critical temperature on the chemical potential $\mu$ is obtained.

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