Lecturer: Prof. Aurel Bulgac (University of Washington, USA)

Title:  Local Density Approximation for Systems
	with Pairing Correlations

Date:   10/24/2001 (Wed.) 15:00 -

Place:  RIKEN Main Bldg. 1F Seminar Room

                           The seminar will be given in English.

Abstract:
I shall introduce a natural and simple to implement renormalization
scheme of the Hartree-Fock-Bogoliubov (HFB) equations for the case of
zero range pairing interaction. This renormalization scheme proves to be
equivalent to a simple energy cut-off with a position dependent running
coupling constant, which qualitatively emulates a density dependent zero
range pairing interaction suggested by phenomenological analyses.
I shall describe also fully self--consistent HFB calculations with a
full consideration of the continuum of long chains of spherical nuclei
(essentially from one drip line to another) using the SLy interaction.
where we used a zero range pairing interaction, which for the first time
was treated without an arbitrary cutoff, using the new regularization
procedure recently developed by us. In the end I shall formulate a local
density approximation for fermion systems with pairing correlations
based on a rapidly converging renormalization scheme for  the pairing
gap in the case of zero range pairing interaction.
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        Contact persons of Nuclear Physics Seminar
        Y. Fukuyama, Y. Nishi, and T. Wakui (RI Beam Science Lab.)
        (email) seminar@rarfaxp.riken.go.jp 
	(FAX)   048-462-4689
        (WWW)   http://rarfaxp.riken.go.jp/~seminar/    
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