Chemical potential-induced effects on caloric properties of a Fermi-Hubbard dimer

Authors

  • Vladimir P. Villegas ⋅ PH Physics Department, De La Salle University
  • Cristine D. Villagonzalo ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

Chemical potential is one of the tunable properties of an optical lattice system when its temperature is varied. In this study, the effects of the chemical potential on the entropy and the heat capacity of a Fermi-Hubbard dimer immersed in a mean-field Fermi gas bath are calculated. Repulsive two-particle interactions are found to require lesser chemical potentials to observe a rapid increase in the entropy at low temperatures. Such phenomena signify quantum level crossings. Furthermore, half-filling of the optical dimer is unnecessary for such phenomena to occur.

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Article ID

SPP-2022-1G-04

Section

Theoretical and Mathematical Physics

Published

2022-09-10

How to Cite

[1]
VP Villegas and CD Villagonzalo, Chemical potential-induced effects on caloric properties of a Fermi-Hubbard dimer, Proceedings of the Samahang Pisika ng Pilipinas 40, SPP-2022-1G-04 (2022). URL: https://proceedings.spp-online.org/article/view/SPP-2022-1G-04.