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

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

2004-12-07

arxiv.org/abs/hep-th/0412073v1

Phys.Atom.Nucl. 68 (2005) 892-898; Yad.Fiz. 68 (2005) 927-934

Physics

High Energy Physics

High Energy Physics - Theory

15 pages, volume in honor of prof.Yu.A.Simonov

Scientific paper

10.1134/1.1935021

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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