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The Renormalized Thermal Mass with Non-Zero Charge Density

H. F. Jones·Philip Parkin
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Abstract

The linear $δ$ expansion is used to obtain corrections up to O$(δ^2)$ to the self-energy for a complex scalar field theory with a $λ(ϕ^{\star}ϕ)^2$ 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 $μ$ is obtained.

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H. F. Jones, Philip Parkin. 2000-05-08. The Renormalized Thermal Mass with Non-Zero Charge Density. https://doi.org/10.1016/s0550-3213(00)00662-3

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