Results 111 to 120 of about 574 (155)

The quartic anharmonic oscillator in stochastic electrodynamics

Journal of Mathematical Physics, 1982
The case of a slightly anharmonic oscillator (with a βx4 perturbing potential) is examined in the framework of stochastic electrodynamics (SED) in full detail. We obtain the stationary probability density and the mean energy, which differs from the quantum result at order β2.
L. Pesquera, P. Claverie
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Excited states in stochastic electrodynamics

Physical Review A, 1988
We show that the set of Wigner functions associated with the excited states of the harmonic oscillator constitutes a complete set of functions over the phase space. An arbitrary probability distribution can be expanded in terms of these Wigner functions.
, França, , Marshall
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The physics of stochastic electrodynamics

Il Nuovo Cimento B, 1986
The problem of the electron immersed in the random zeropoint radiation field and described by the stochastic Abraham-Lorentz equation is analysed from a new point of view. First an approximate treatment of the (statistically) stationary motion of this system is performed by using a local linearization procedure applicable to nonlinear periodic problems.
L. de la Peña, A. M. Cetto
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Spin and paramagnetism in classical stochastic electrodynamics

Physical Review A, 1989
Etude des proprietes statistiques du spin S et du dipole magnetique pr d'une particule a 2 constituants lies par une force harmonique. On determine la relation entre S et μ et conclut que ∼h 2 . Le systeme contient des forces paramagnetiques et une comparaison avec l'experience montre un excellent accord avec l'electrodynamique ...
, Barranco, , Brunini, , França
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Linear Stochastic Electrodynamics

1996
In the foregoing chapter it was observed that the use of a conventional perturbative approach in SED leads to unperturbed solutions obeying classical equations of motion, whereas they should be stochastic and somehow contain ‟, if they are expected to describe the quantum world; in other words, that not even the zero-order motions of the sed system in ...
Luis de la Peña, Ana María Cetto
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The propagator of stochastic electrodynamics

Physical Review D, 1981
The ''elementary propagator'' for the position of a free charged particle subject to the zero-point electromagnetic field with Lorentz-invariant spectral density proportional..omega../sup 3/ is obtained. The nonstationary process for the position is solved by the stationary process for the acceleration.
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Gaussian quantum fields and stochastic electrodynamics

Physical Review A, 1988
The relation between quantum electrodynamics and (classical) stochastic electrodynamics is elucidated by means of a general construction which associates with every Gaussian quantum field (for example, vacuum-free fields or coherent states at zero or nonzero temperature) a classical random field, which in the case of quantum electrodynamics yields ...
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The extended charge in stochastic electrodynamics

Il Nuovo Cimento B Series 11, 1985
We derive a covariant equation for the motion of the extended charge and show how a consistent description is achieved for nonrelativistic velocities. If the external force is generated by the classical stochastic zero-point electromagnetic field, the equation of motion has the form of a Langevin equation with memory.
H. M. França, G. C. Santos
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The harmonic oscillator in stochastic electrodynamics

Il Nuovo Cimento B Series 11, 1974
Classical electrodynamics with the hypothesis of a universal, Lorentz invariant, background radiation (stochastic electrodynamics) has been proposed as a possible alternative to quantum electrodynamics. The stochastic equations of motion of a charged particle are derived according to this theory, and they are compared with those of Brownian motion.
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Stochastic Electrodynamics an Overview

1983
As a sequel to the absorber theory of radiation of Wheeler and Feynman,1 Braffort and Tzara2 postulated the existence of a universal random electromagnetic field at the absolute zero of temperature—the zero-point field.
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