Finite temperature canonical treatments in the static path approximation

R. ROSSIGNOLI; N. CANOSA; J.L. EGIDO

NUCLEAR PHYSICS A

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 1996 vol. 605 p. 1 - 27

0375-9474

The static path approximation to the nuclear partition function is applied within a canonical ensemble, utilizing the saddle-point approximation for the finite temperature proton and neutron number projection. Results obtained with a pairing plus quadrupole interaction indicate that significant differences between the canonical and grand canonical distribution over the deformation parameters and gaps may arise, particularly in transitional nuclei like lS2Dy. Comparison with effective mean field approximations is also made.