Space-Time Contours to Treat the Interaction between an Intense Electric Field and a Molecular System

2006 ◽  
Vol 110 (20) ◽  
pp. 6571-6578 ◽  
Author(s):  
Michael Baer
Keyword(s):  
Electric Field ◽  
Molecular System ◽  
Space Time

scholarly journals SCHWINGER'S RESULT ON PARTICLE PRODUCTION FROM COMPLEX PATHS WKB APPROXIMATION

2000 ◽  
Vol 15 (23) ◽  
pp. 3717-3731 ◽  
Author(s):  
S. BISWAS ◽  
A. SHAW ◽  
B. MODAK
Keyword(s):  
Electric Field ◽  
Particle Production ◽  
Complex Space ◽  
Space Time ◽  
Wkb Approximation ◽  
Uniform Electric Field ◽  
Gauge Invariant ◽  
Transmission Coefficients ◽  
Loop Approximation ◽  
Complex Trajectory

This paper presents the derivation of Schwinger's gauge-invariant result of Im ℒ eff up to one loop approximation, for particle production in an uniform electric field through the method of complex trajectory WKB approximation (CWKB). The CWKB proposed by one of the authors1 looks upon particle production as being due to the motion of a particle in complex space–time plane, thereby requiring tunneling paths both in space and time. Recently2,3 there have been some efforts to calculate the reflection and the transmission coefficients for particle production in an uniform electric field that differ from our expressions for the same. In this paper we clarify the confusion in this regard and establish the correctness of CWKB.

scholarly journals Space/Time Noncommutativity in String Theories without Background Electric Field

2002 ◽  
Vol 2002 (12) ◽  
pp. 031-031 ◽  
Author(s):  
Giuseppe De Risi ◽  
Gianluca Grignani ◽  
Marta Orselli
Keyword(s):  
Electric Field ◽  
Space Time ◽  
String Theories

Characterizing space-time coupling of the electric field of ultrashort pulses using the SPIDER technique

2005 ◽  
Author(s):  
Ellen M. Kosik Williams ◽  
Christophe Dorrer ◽  
Aleksander S. Radunsky ◽  
Ian A. Walmsley
Keyword(s):  
Electric Field ◽  
Ultrashort Pulses ◽  
Space Time

RELATIVISTIC LANDAU–AHARONOV–CASHER QUANTIZATION IN TOPOLOGICAL DEFECT SPACE–TIME

2010 ◽  
Vol 19 (01) ◽  
pp. 85-96 ◽  
Author(s):  
K. BAKKE ◽  
C. FURTADO
Keyword(s):  
Dipole Moment ◽  
Electric Field ◽  
Magnetic Dipole Moment ◽  
Neutral Particle ◽  
Topological Defect ◽  
Nonrelativistic Limit ◽  
Space Time ◽  
Landau Levels ◽  
Relativistic Dynamics ◽  
Curved Space

In this paper we study the Landau levels arising within the relativistic dynamics of a neutral particle which possesses a permanent magnetic dipole moment interacting with an external electric field in the curved space–time background with the presence of a torsion field. We use the Aharonov–Casher effect to couple this neutral particle with the electric field in this curved background. The eigenfunction and eigenvalues of the Hamiltonian are obtained. We show that the presence of the topological defect breaks the infinite degeneracy of the relativistic Landau levels arising in this system. We study the nonrelativistic limit of the eigenvalues and compare these results with cases studied earlier.

SPACE-TIME EVOLUTION OF ELECTRIC FIELDS IN CORES OF COMPACT STARS

2012 ◽  
Vol 12 ◽  
pp. 193-197
Author(s):  
WEN-BIAO HAN ◽  
REMO RUFFINI ◽  
SHE-SHENG XUE
Keyword(s):  
Electric Field ◽  
Electromagnetic Radiation ◽  
Time Evolution ◽  
Electron Density ◽  
Electric Fields ◽  
Gravitational Collapse ◽  
Space Time ◽  
Compact Stars ◽  
Equilibrium Configurations ◽  
Space Time Evolution

Studying the electrodynamics of proton and electron fluids in cores of compact stars, we find oscillations of electron density and electric field around their equilibrium configurations, provided cores undergo a pulsation or trigger of gravitational collapse. These field and density oscillations can possibly lead to observable electromagnetic radiation.

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