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Physical Review C 84 (2011) 065806
Boundary conditions for star matter and other periodic fermionic systems
F. Gulminelli1, T. Furuta1, 2, O. Juillet1, C. Leclercq1

Bulk fermionic matter, as it can be notably found in supernova matter and neutrons stars, is subject to correlations of infinite range due to the antisymmetrisation of the N-body wave function, which cannot be explicitly accounted for in a practical simulation. This problem is usually addressed in condensed matter physics by means of the so-called Twist Averaged Boundary Condition method. A different ansatz based on the localized Wannier representation has been proposed in the context of antisymmetrized molecular dynamics. In this paper we work out the formal relation between the two approaches. We show that, while the two coincide when working with exact eigenstates of the N-body Hamiltonian, differences appear in the case of variational approaches, which are currently used for the description of stellar matter. Some model applications with Fermionic Molecular Dynamics are shown.
1 :  LPCC - Laboratoire de Physique Corpusculaire de Caen
2 :  Nishina Center
Physique théorique
Physique/Physique Nucléaire Théorique

Physique/Astrophysique/Astrophysique stellaire et solaire

Planète et Univers/Astrophysique/Astrophysique stellaire et solaire

Physique/Matière Condensée/Electrons fortement corrélés
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