Oak Ridge National Laboratory

Physics Division

Physics Division Seminars

Physics Division Seminars bring us speakers on a variety of physics related subjects. Usually these are held in the Building 6008 large Conference Room, at 3:00 pm on the chosen day, but times and locations may vary. For more information, contact our seminar chairman,

Alfredo Galindo-Uribarri
Tel (Office): (865) 574-6124  (FAX): (865) 574-1268

Thu., January 20, 2011, at 3:00 p.m. (refreshments at 2:40 p.m.)

Porter-Thomas distribution in unstable many body systems

Alexander Volya, Florida State University, Tallahassee, FL
Building 6008 Conference Room

Structure and reaction aspects are deeply entangled in the nuclear many-body systems. In this presentation Dr. Volya will highlight the advances, as well as difficulties in the path toward building a unified approach. He will concentrate on the question of the resonance width distribution in unstable many-body systems. The feasible scenarios are explored with the help of the continuum shell model approach, which is one of the most equipped methods to address the structure-reaction physics of interest microscopically. The single-particle nature of decay, the few-body character of the interaction Hamiltonian, and collectivity that emerges in non-stationary systems due to the coupling to the continuum of reaction states are to be discussed. Correlations between structures of the parent and daughter nuclear systems in the common Fock space are suggested to result in deviations of decay width statistics from the Porter-Thomas distribution.