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Phys. Rev. C 67, 065806 (2003) [4 pages]

Spin-orbit induced backflow in neutron matter with auxiliary field diffusion Monte Carlo method

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L. Brualla1,*, S. Fantoni1,†, A. Sarsa1,‡, K. E. Schmidt1,§, and S. A. Vitiello2,**
1International School for Advanced Studies, SISSA, Trieste, ItalyINFM DEMOCRITOS National Simulation Center, Via Beirut, I-34014 Trieste, Italy
2Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, Unicamp, Campinas-SP, Brazil

Received 14 April 2003; published 23 June 2003

The energy per particle of zero-temperature neutron matter is investigated, with particular emphasis on the role of the L⋅S interaction. An analysis of the importance of explicit spin-orbit correlations in the description of the system is carried out by the auxiliary field diffusion Monte Carlo method. The improved nodal structure of the guiding function, constructed by explicitly considering these correlations, lowers the energy. The proposed spin-backflow orbitals can also be conveniently used in the Green’s function Monte Carlo calculations of light nuclei.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.67.065806
DOI:
10.1103/PhysRevC.67.065806
PACS:
26.60.+c, 21.65.+f, 21.30.Fe, 05.10.Ln

*Email address: lbrualla@sissa.it

†Email address: fantoni@sissa.it

‡Present address: Departamento de Física Moderna, Universidad de Granada, E-18071 Granada, Spain. Email address: sarsa@ugr.es

§Permanent address: Department of Physics and Astronomy, Arizona State University, Tempe, AZ 85287. Email address: kevin.schmidt@asu.edu

**Email address: vitiello@unicamp.br

 
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