Photon Intensity Interferometry for Expanding Sources

Details Photon Intensity Interferometry for Expanding Sources Photon Intensity Interferometry for Expanding Sources

1995-08-17

arxiv.org/abs/hep-ph/9508318v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX209, 12 pages, 2 PostScript figures, requires 'epsfig.sty'. More information is available at http://www.gsi.de/groups/the

Scientific paper

10.1016/0370-2693(96)00323-1

Using Quantum Field Theory we derive a general formula for the double inclusive spectra of photons radiated by a system in local equilibrium. The derived expression differs significantly from the one mostly used up to now in photon intensity interferometry of heavy--ion collisions. We present a covariant expression for double inclusive spectra adapted for usage in numerical simulations. Application to a schematic model with a Bj\o rken type expansion gives strong evidence for the need of reinvestigating photon--photon correlations for expanding sources.

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