scholarly journals Solvable type IIA string theory in plane-wave background and D-branes

2003 ◽  
Vol 654 (1-2) ◽  
pp. 114-134 ◽  
Author(s):  
Seungjoon Hyun ◽  
Hyeonjoon Shin
2003 ◽  
Vol 20 (12) ◽  
pp. S567-S573 ◽  
Author(s):  
Kostas Skenderis ◽  
Marika Taylor

2012 ◽  
Vol 27 (24) ◽  
pp. 1250142 ◽  
Author(s):  
GEN NAKAMURA ◽  
KAZUHIRO YAMAMOTO

We extend our previous work [Phys. Rev. D83, 045030 (2011)], which investigated the first-order quantum effect in the Larmor radiation from a moving charge in a spatially homogeneous time-dependent electric field. Specifically, we investigate the quantum Larmor radiation from a moving charge in a monochromatic electromagnetic plane wave background based on the scalar quantum electrodynamics at the lowest order of the perturbation theory. Using the in–in formalism, we derive the theoretical formula of the total radiation energy from a charged particle in the initial states being at rest and being in a relativistic motion. Expanding the theoretical formula in terms of the Planck constant ℏ, we obtain the first-order quantum effect on the Larmor radiation. The quantum effect generally suppresses the total radiation energy compared with the prediction of the classical Larmor formula, which is a contrast to the previous work. The reason is explained by the fact that the radiation from a moving charge in a monochromatic electromagnetic plane wave is expressed in terms of the inelastic collisions between an electron and photons of the background electromagnetic waves.


2002 ◽  
Vol 2002 (10) ◽  
pp. 066-066 ◽  
Author(s):  
Andrei Parnachev ◽  
Anton V Ryzhov

2005 ◽  
Vol 2005 (12) ◽  
pp. 017-017 ◽  
Author(s):  
Gianluca Grignani ◽  
Marta Orselli ◽  
Bojan Ramadanovic ◽  
Gordon W Semenoff ◽  
Donovan Young

2001 ◽  
Vol 16 (06) ◽  
pp. 1123-1146 ◽  
Author(s):  
L. ALVAREZ-GAUMÉ ◽  
J. L. F. BARBÓN

We show that the classic results of Schwinger on the exact propagation of particles in the background of constant field-strengths and plane waves can be readily extended to the case of nocommutative QED. It is shown that nonperturbative effects on constant backgrounds are the same as their commutative counterparts, provided the on-shell gauge-invariant dynamics are referred to a nonperturbatively related space–time frame. For the case of the plane wave background, we find evidence of the effective extended nature of noncommutative particles, producing retarded and advanced effects in scattering. Besides the known "dipolar" character of noncommutative neutral particles, we find that charged particles are also effectively extended, but they behave instead as "half-dipoles."


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