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Thermal Operator Representation of Finite-Temperature Amplitudes in the Presence of Chemical Potential

M. Inui·H. Kohyama·A. Niegawa
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Abstract

In a recent paper [Phys. Rev. D {\bf 72}, 085006 (2005)], Brandt {\em et al}. deduced the thermal operator representation for a thermal $N$-point amplitude, both in the imaginary-time and real-time formalisms. In the case when a chemical potential present, however, the representation is not as simple as in the case with vanishing chemical potential. We propose a much simpler and transparent representation for the case of non-zero chemical potential.

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M. Inui, H. Kohyama, A. Niegawa. 2006-01-25. Thermal Operator Representation of Finite-Temperature Amplitudes in the Presence of Chemical Potential. https://doi.org/10.1103/physrevd.73.047702

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