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

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

scholarly journals Measuring the spatiotemporal electric field of tightly focused ultrashort pulses with sub-micron spatial resolution

2008 ◽  
Vol 16 (18) ◽  
pp. 13663 ◽  
Author(s):  
Pamela Bowlan ◽  
Ulrike Fuchs ◽  
Rick Trebino ◽  
Uwe D. Zeitner
Keyword(s):  
Electric Field ◽  
Spatial Resolution ◽  
Ultrashort Pulses

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.

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