Damped collective motion of many body systems: A variational approach to the quantal decay rate

Details Damped collective motion of many body systems: A variational approach to the quantal decay rate Damped collective motion of many body systems: A variational approach to the quantal decay rate

2004-07-26

arxiv.org/abs/nucl-th/0407092v2

Nucl.Phys. A756 (2005) 136-152

Physics

Nuclear Physics

Nuclear Theory

revised version, submitted to Nuclear Physics A, 20 pages, 2 figures

Scientific paper

10.1016/j.nuclphysa.2005.04.001

We address the problem of collective motion across a barrier like encountered in fission. A formula for the quantal decay rate is derived which bases on a recently developed variational approach for functional integrals. This formula can be applied to low temperatures that have not been accessible within the former PSPA type approach. To account for damping of collective motion one particle Green functions are dressed with appropriate self-energies.

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