Speaker
Luis Robledo
Description
In those branches of physics involving quantum many body
systems, mean field states are a good starting point for any
theoretical study. One of the advantages of mean field
states is the existence of generalized Wick theorems that
simplify the evaluation of operator overlaps. Unfortunately,
the number of terms to be considered increase with the
double factorial of the number of creation and annihilation
operators in the overlap. This and other problems that
appear when the mean field states are of the Hartree Fock
Bogoliubov (HFB) type can be easily handled introducing
fermion coherent state techniques and the pfaffian. In my
talk I will discuss this technique and the applications
involving HFB states in the context of symmetry restoration
and configuration techniqes common in low energy nuclear
structure calculations.
