Excitonic models of light-harvesting complexes, where the vibrational degrees of freedom are treated as a bath, are commonly used to describe the motion of the electronic excitation through aâ€¦ (More)

Atoms and negative ions interacting with laser photons yield a coherent source of photoelectrons. Applying external fields to photoelectrons gives rise to interesting and valuable interferenceâ€¦ (More)

Laserâ€“atom interaction can be an efficient mechanism for the production of coherent electrons. We analyze the dynamics of monoenergetic electrons in the presence of uniform, perpendicular magneticâ€¦ (More)

â€“ We study the quantal motion of electrons emitted by a pointlike monochromatic isotropic source into parallel uniform electric and magnetic fields. The two-path interference pattern in the emergingâ€¦ (More)

The propagation of electrons in static and uniform electromagnetic fields is a standard topic of classical electrodynamics. The Hamilton function is given by a quadratic polynomial in the positionsâ€¦ (More)

M. Acciarri 25 A. Adam 43, O. Adriani 15, M. Aguilar-Benitez 24, S. Ahlen 9, J. Alcaraz 16, A. Aloisio 27, G. Alverson t~ M.G. Alviggi 27, G. Ambrosi 32, Q. An 17, H. Anderhub 46, A.L. Anderson t4,â€¦ (More)

We examine the spatial distribution of electrons generated by a fixed energy point source in uniform, parallel electric and magnetic fields. This problem is simple enough to permit analytic quantumâ€¦ (More)

An alternative description of quantum scattering processes rests on inhomogeneous terms amended to the SchrÃ¶dinger equation. We detail the structure of sources that give rise to multipole scatteringâ€¦ (More)

We have studied the reactions e + e ~ hadrons, e+eS , /~+/~and z+T , in the energy range 88.2 =<I/s=< 94.2 GeV. A total luminosity of 5.5 pb-1 , corresponding to approximately 115000 hadronic andâ€¦ (More)