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Microscopic calculation of symmetry projected nuclear level densities

K. Van Houcke, S. M. A. Rombouts, K. Heyde, and Y. Alhassid

Phys. Rev. C: Nucl. Phys., vol: 79, num: 2, 4 pages, published: 03 February 2009, 024302

Abstract: We present a quantum Monte Carlo method with exact projection on parity and angular momentum that is free of a sign problem for seniority-conserving nuclear interactions. This technique allows the microscopic calculation of angular momentum and parity-projected nuclear level densities. We present results for the 55Fe, 56Fe, and 57Fe isotopes. Signatures of the pairing phase transition are observed in the angular momentum distribution of the nuclear level density.


   Atomic nucleus.
      Nuclear structure.
         Statistical and similar approaches in nuclear structure theory.
            Statistics of nuclear levels, fluctuations, level density, etc.

   Atomic nucleus.
      Nuclear structure.
         Microscopic methods in nuclear structure theory (Hartree-Fock method, random phase approximation, etc.).
             Mean field methods

   Atomic nucleus.
      Basic nuclear properties. Properties of particular nuclei.
         Properties of particular nuclei (theory).
            Z=22÷26.

   Nuclear reactor physics.
      Theory and calculation of nuclear reactors and radiation transport.
         Calculation methods and computer codes.
            Monte-Carlo method.

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