/ 01 06 03 1 v 1 6 J un 2 00 1 Kerr cat states from the four - photon Jaynes - Cummings model

nt - p h / 02 06 01 2 v 1 3 J un 2 00 2 COHERENT STATES , ENTANGLEMENT , AND GEOMETRIC INVARIANT THEORY

Quantum dynamical properties of a two - photon non - linear Jaynes - Cummings model

In this paper we study a two-photon time-dependent Jaynes-Cummings model interacting with a Kerr-like medium. We assumed that the electromagnetic field is in different states such as coherent, squeezed vacuum and pair coherent, and that the atom is initially in the excited state. We studied the temporal evolution of the population of the excited level, and the second order coherence function. T...

nt - p h / 01 06 03 9 v 1 7 J un 2 00 1 Regularization of a three - body problem with zero - range potentials

We propose a coordinate-space regularization of the three-body problem with zero-range potentials. We include the effective range and the shape parameter in the boundary condition of the zero-range potential. The proposed extended zero-range model is tested against atomic helium trimers and is shown to provide an adequate quantitative description of these systems.

X iv : h ep - p h / 01 06 06 4 v 1 6 J un 2 00 1 Implications of the Measurements of U e 3 to Theory ⋆

The predictions of Ue3 are discussed. Typical models which lead to the large, the seizable and the tiny Ue3 are also studied.

ar X iv : h ep - p h / 03 06 01 5 v 1 2 J un 2 00 3 The g factor of proton

We consider higher order corrections to the g factor of a bound proton in hydrogen atom and their consequences for a magnetic moment of free and bound proton and deuteron as well as some other objects.