QUANTUM-ELECTRODYNAMIC PROCESSES IN A STRONG NONCLASSICAL ELECTROMAGNETIC-FIELD

Authors
Citation
Ob. Prepelitsa, QUANTUM-ELECTRODYNAMIC PROCESSES IN A STRONG NONCLASSICAL ELECTROMAGNETIC-FIELD, Journal of experimental and theoretical physics, 85(5), 1997, pp. 838-845
Citations number
27
ISSN journal
10637761
Volume
85
Issue
5
Year of publication
1997
Pages
838 - 845
Database
ISI
SICI code
1063-7761(1997)85:5<838:QPIASN>2.0.ZU;2-9
Abstract
Quantum-electrodynamic processes that take place in the presence of a squeezed electromagnetic field are discussed. Integral formulas are de rived that make it possible to express the probability of any process in a squeezed electromagnetic field in terms of the probability of the same process in a classical electromagnetic field. The main laws that govern processes of first order in the fine-structure constant as fun ctions of the number of photons involved and the quantum fluctuations are examined. Tunneling formulas for the probability of a photon produ cing an electron-positron pair in a strong squeezed field are derived. Also, resonant electron-electron scattering is examined and the scatt ering cross section as a function of the statistical properties of the field (the way the field has been squeezed) is investigated. It is fo und that the quantum fluctuations of the squeezed electromagnetic fiel d give rise to an increase in the scattering cross section, with the p robability of the process in a phase-squeezed electromagnetic field al ways being higher than the probability of the process in an amplitude- squeezed electromagnetic field. (C) 1997 American Institute of Physics .