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Boundary conditions for star matter and other periodic fermionic systems

Abstract : 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.
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https://hal.archives-ouvertes.fr/hal-00628137
Contributeur : Francesca Gulminelli <>
Soumis le : lundi 3 octobre 2011 - 09:01:38
Dernière modification le : mardi 19 février 2019 - 10:04:10
Document(s) archivé(s) le : mardi 13 novembre 2012 - 15:00:53

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F. Gulminelli, T. Furuta, O. Juillet, C. Leclercq. Boundary conditions for star matter and other periodic fermionic systems. Physical Review C, American Physical Society, 2011, 84, pp.065806. ⟨10.1103/PhysRevC.84.065806⟩. ⟨hal-00628137⟩

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