Universal threshold enhancement

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

By assuming certain analytic properties of the propagator, it is shown that universal features of the spectral function, including threshold enhancement, arise if a pole describing a particle at high temperature approaches in the complex energy plane the threshold position of its two-body decay with the variation of T. The case is considered when one can disregard any other decay processes. The quality of the proposed description is demonstrated by comparing it with the detailed large N solution of the linear σ model around the pole-threshold coincidence.

Original languageEnglish
Article number047701
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume68
Issue number4
DOIs
Publication statusPublished - 2003

Fingerprint

Enhancement
thresholds
Pole
augmentation
poles
Decay
Spectral Function
decay
Coincidence
Propagator
Linear Model
propagation
Energy
energy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics

Cite this

Universal threshold enhancement. / Patkós, A.; Szép, Z.; Szépfalusy, P.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 68, No. 4, 047701, 2003.

Research output: Contribution to journalArticle

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