Monte Carlo methods for yrast spectroscopy
Dipartimento di Fisica dell’Universitá di Milano, I-20133, Milano, Italy
2 INFN sezione di Milano, Milano, Italy
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We discuss the details of the recently proposed Monte Carlo method to evaluate the exact energies of yrast levels. Energy levels are evaluated up to J = 18 with small statistical errors using the Metropolis method for the case of 166Er using the pairing plus quadrupole model within one major shell. We also discuss the evaluation of the probabilities of the Hartree-Fock-Bogoliubov wave functions in the corresponding yrast eigenstates and they are found to be large. The model displays a too strong backbending behaviour not seen experimentally.
© Società Italiana di Fisica and Springer-Verlag, 2004