1 6 N ov 2 00 6 Rectification effects in coherent transport through single molecules

Rectification effects in coherent transport through single molecules

A minimal model for coherent transport through a donor/acceptor molecular junction is presented. The two donor and acceptor sites are described by single levels energetically separated by an intramolecular tunnel barrier. In the limit of strong coupling to the electrodes a current rectification for different bias voltage polarities occurs. Contacts with recent experiments of molecular rectifica...

0 v 1 6 N ov 2 00 3 Coherent states à la Klauder - Perelomov for the Pöschl - Teller potentials

In this paper we present a scheme for constructing the coherent states of Klauder-Perelomov’s type for a particle which is trapped in Pöschl-Teller potentials.

ar X iv : q ua nt - p h / 06 08 21 9 v 2 1 5 N ov 2 00 6 Theoretical Study of Fast Light with Short sech Pulses in Coherent Gain Media

We investigate theoretically the phenomenon of so-called fast light in an unconventional regime, using pulses sufficiently short that relaxation effects in a gain medium can be ignored completely. We show that previously recognized gain instabilities, including superfluorescence, can be tolerated in achieving a pulse peak advance of one full peak width.

40 0 v 1 2 6 N ov 2 00 2 1 Single Transverse Spin Asymmetry in p ↑ p → πX and ep ↑ → πX

ar X iv : q ua nt - p h / 02 11 10 6 v 1 1 8 N ov 2 00 2 Harmonic Oscillator , Coherent States , and Feynman Path Integral

The Feynman path integral for the generalized harmonic oscillator is reviewed, and it is shown that the path integral can be used to find a complete set of wave functions for the oscillator. Harmonic oscillators with different (time-dependent) parameters can be related through unitary transformations. The existence of generalized coherent states for a simple harmonic oscillator can then be inte...