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Path integrals and degrees of freedom in many-body systems and relativistic field theories

F. Palumbo
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Abstract

The identification of physical degrees of freedom is sometimes obscured in the path integral formalism, and this makes it difficult to impose some constraints or to do some approximations. I review a number of cases where the difficulty is overcame by deriving the path integral from the operator form of the partition function after such identification has been made.

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F. Palumbo. 2004-12-07. Path integrals and degrees of freedom in many-body systems and relativistic field theories. https://doi.org/10.1134/1.1935021

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