On the nonlinear effects in quantum electrodynamics: the coalescence of photons in a nuclear coulomb field

1966 ◽  
Vol 46 (4) ◽  
pp. 684-689 ◽  
Author(s):  
V. Costantini ◽  
G. Pistoni ◽  
B. De Tollis
Keyword(s):  
Quantum Electrodynamics ◽  
Coulomb Field ◽  
Nonlinear Effects

scholarly journals Photon Fission in Intense Laser Fields and in the Coulomb Field of a Nucleus

1979 ◽  
Vol 32 (4) ◽  
pp. 295 ◽  
Author(s):  
JF Lindsey ◽  
HS Perlman ◽  
GJ Troup
Keyword(s):  
Cross Section ◽  
Quantum Electrodynamics ◽  
Vacuum Polarization ◽  
Transition Amplitude ◽  
Coulomb Field ◽  
Fission Cross Section ◽  
Developmental State ◽  
Intense Laser ◽  
Intense Laser Fields ◽  
Laser Technology

A calculation of the photon fission cross section in the Coulomb field of a nucleus reveals that the real part of the transition amplitude is the predominant contributor for photon energies up to 2 MeV. Since it is just this part that is associated with the fourth-order vacuum polarization process, it is suggested, given the present developmental state of laser technology, that coincidence experiments with photon fission might well afford a test of higher order quantum electrodynamics.

Nonlinear effects in quantum electrodynamics

1971 ◽  
Vol 2 (3) ◽  
pp. 733-787 ◽  
Author(s):  
V. Costantini ◽  
B. De Tollis ◽  
G. Pistoni
Keyword(s):  
Quantum Electrodynamics ◽  
Nonlinear Effects

scholarly journals Investigation of nonlinear effects in Josephson parametric oscillators used in circuit quantum electrodynamics

2013 ◽  
Vol 15 (10) ◽  
pp. 105002 ◽  
Author(s):  
Philip Krantz ◽  
Yarema Reshitnyk ◽  
Waltraut Wustmann ◽  
Jonas Bylander ◽  
Simon Gustavsson ◽  
...  
Keyword(s):  
Quantum Electrodynamics ◽  
Nonlinear Effects ◽  
Circuit Quantum Electrodynamics ◽  
Parametric Oscillators

GAUGE-INVARIANT FORMULATION OF QUANTUM ELECTRODYNAMICS

1955 ◽  
Vol 33 (11) ◽  
pp. 650-660 ◽  
Author(s):  
P. A. M. Dirac
Keyword(s):  
Gauge Invariance ◽  
Quantum Electrodynamics ◽  
Coulomb Field ◽  
Gauge Invariant ◽  
Gauge Transformations ◽  
Invariant Formulation ◽  
Invariant Operation ◽  
General Gauge

Electrodynamics is formulated so as to be manifestly invariant under general gauge transformations, through being built up entirely in terms of gauge-invariant dynamical variables. The quantization of the theory can be carried out by the usual rules and meets with the usual difficulties.It is found that the gauge-invariant operation of creation of an electron involves the simultaneous creation of an electron and of the Coulomb field around it. The requirement of manifest gauge invariance prevents one from using the concept of an electron separated from its Coulomb field.

Multiple Crossover Effects and Nonlinear Effects on Socio-Cultural Adjustment

2004 ◽  
Author(s):  
Riki Takeuchi ◽  
David P. Lepak ◽  
Sophia Marinova ◽  
Seokhwa Yun
Keyword(s):  
Nonlinear Effects ◽  
Cultural Adjustment ◽  
Crossover Effects

Energy, Information, and Superluminal Speed in Quantum Electrodynamics

2020 ◽  
pp. 27-33
Author(s):  
Boris A. Veklenko
Keyword(s):  
Electromagnetic Field ◽  
Perturbation Theory ◽  
Quantum Electrodynamics ◽  
Excited Atom ◽  
Standard Quantum ◽  
Energy Information

Without using the perturbation theory, the article demonstrates a possibility of superluminal information-carrying signals in standard quantum electrodynamics using the example of scattering of quantum electromagnetic field by an excited atom.

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