Medium modification of two-particle scattering in nonideal Bose systems
Atomic Physics
2009-10-31 v1 Statistical Mechanics
Nuclear Theory
Accelerator Physics
Abstract
Medium modification of scattering properties in interacting Bose systems are considered by solving the Bethe-Salpeter equation. An equation of state for the normal phase (generalized Beth-Uhlenbeck formula) is given using the in-medium phase shifts to include two-particle correlations. Conclusions are drawn for systems of bosonic atoms with repulsive interaction such as sodium Na and rubidium Rb. It is shown that the in-medium scattering length and the absolute value of the in-medium scattering phase shift for low scattering energies increase with density.
Cite
@article{arxiv.physics/9802052,
title = {Medium modification of two-particle scattering in nonideal Bose systems},
author = {H. Stein and K. Morawetz and G. Röpke},
journal= {arXiv preprint arXiv:physics/9802052},
year = {2009}
}