Details

Autor(en) / Beteiligte

• Ríos, Elías
• Schneider, David M
• Capuzzi, Pablo
• Alcoba, Diego R
• Oña, Ofelia B
• Torre, Alicia
• Lain, Luis

Titel

Attaining the maximum Bose–Einstein condensation in a finite-size hard-core boson model

Ist Teil von

• Journal of physics. A, Mathematical and theoretical, 2024-01, Vol.57 (1), p.15301

Erscheinungsjahr

2024

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Abstract We propose a model for hard-core bosons in a lattice which allows to achieve the optimal occupation number predicted by Tennie et al (2017 Phys. Rev. B 96 064502) for a finite number of sites. The model is based on an extension of the Hamiltonian of the so-called Hubbard star, whose quantum properties are studied by means of quantum information descriptors such as the von Neumann entropy and the mutual information. These metrics are analyzed as a function of the one- and two-particle reduced density matrices, allowing to explore the relationship between condensation and entanglement by means of a control parameter that, under a given limit, connects our findings with previous results. All developments comprised in this article have been derived by analytical methods.