Nuclear Seminar

Nuclear Many-body Physics with a Time-dependent Approach

Alexander Volya
Florida State University

Monday, December 7, 2009   4:00 p.m.   NSH 124
(Refreshments served prior to seminar in NSH 124)

In this talk I would like to present a new time-dependent approach to the Continuum Shell Model. The method takes its roots in the well-established Feshbach projection formalism and overcomes numerous difficulties that emerge in the many-body physics of unstable nuclei. Topics presented will include the construction of the time-dependent Green’s function, the full propagator from the exact solution of Dyson’s equation, a treatment of decays and virtual self-energy terms, the explicit time dependence and survival probability of states, the strength function and collective features of unstable systems, computation of the cross section and its anisotropy, Coulomb amplitudes and interference, and an extensive comparison with R-matrix approach. In order to demonstrate the power of the time-dependent continuum shell model approach, the technique is tested on numerous realistic examples of present day interest.