Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/12456
Title: New phase of QED?
Author: Peccei, R.D.
Solà Peracaula, Joan
Wetterich, C.
Keywords: Reaccions nuclears
Electrodinàmica quàntica
Partícules (Física nuclear)
Nuclear reactions
Quantum electrodynamics
Particles (Nuclear physics)
Issue Date: 1988
Publisher: The American Physical Society
Abstract: We discuss the speculation that the sharp positron lines and correlated e/sup +/e/sup -/ and ..gamma gamma.. signals seen in heavy-ion collisions may be evidence for a new phase of QED. We examine several characteristics of the data which argue for this interpretation and point out further experimental observations which would favor this hypothesis. However, we detail also theoretical difficulties and experimental contradictions which considerably weaken the basis for this speculation. In particular, we argue that for the formation of a new phase or a solitonlike structure in QED it is necessary that nonlinear effects in electrodynamics become important. Even though Z..cap alpha.. is large, these effects always entail a suppression factor of ..cap alpha.., which is difficult to overcome.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.37.2492
It is part of: Physical Review D, 1988, vol. 37, núm. 9, p. 2492-2498
Related resource: http://dx.doi.org/10.1103/PhysRevD.37.2492
URI: http://hdl.handle.net/2445/12456
ISSN: 0556-2821
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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