A path integration approach to relativistic finite density problems and its particle content

S. Ying

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arXiv · hep-th/9611166

A path integration approach to relativistic finite density problems and its particle content

S. Ying

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Abstract

A path integration formulation for the finite density and temperature problems is shown to be consistent with the thermodynamics using an 8 component ``real'' representation for the fermion fields by applying it to a free fermion system. A relativistic quantum field theory is shown to be smoothly approached at zero temperature by a real-time thermal field theory so derived even at a finite density. The analysis leads to a new representation for the fermion fields which is shown to be inequivalent to the conventional 4 component theory at the quantum level by having a mirror universe with observable effects and to be better behaved at short distances.

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S. Ying. 1996-11-21. A path integration approach to relativistic finite density problems and its particle content. https://arxiv.org/abs/hep-th/9611166

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