Quantum field propagator for extended-objects in the microcanonical ensemble and the S-matrix formulation

Details Quantum field propagator for extended-objects in the microcanonical ensemble and the S-matrix formulation Quantum field propagator for extended-objects in the microcanonical ensemble and the S-matrix formulation

2007-05-31

arxiv.org/abs/0705.4533v1

Phys.Lett.B637:133-138,2006

Physics

High Energy Physics

High Energy Physics - Theory

Seminar at BLTP, Non-Pertuirbative methods in QFT (Scientific Leaders:A. Dorokhov, E. Kuraev)

Scientific paper

10.1016/j.physletb.2006.04.004

Starting with the well-known Nambu-Goto action for an N-extended body system the propagator in the microcanonical ensemble is explicitly computed. This propagator is independent of the temperature and, in contrast with the previous references, takes account on all the non-local effects produced by the extended objects (e.g., strings) in interaction. The relation between relativistic quantum field theories in the microcanonical approach and the pure S-matrix formulation is stablished and analyzed.

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