@article {577, title = {Caloric effects in an open Fermi{\textendash}Hubbard optical dimer due to onsite and heat bath-induced two-particle interactions}, journal = {J. Magn. Magn. Mater.}, volume = {564}, year = {2022}, pages = {170094}, abstract = {The immersion of the Fermi{\textendash}Hubbard optical dimer in a mean field Fermi gas, acting as a heat bath, modifies the behavior of the statistical mechanical properties of the particles trapped in it. This is done by varying the two-particle interactions induced by the heat bath and the onsite two-particle interaction U. It is shown that in the presence of the heat bath-induced interaction, the partition function Z drops to a minimum finite value in the repulsive regime of U at the normalized temperature region kTt/2, where t is the tunneling parameter. In this temperature region, the convergence points of the respective isolines of the entropy S and the heat capacity Cᵥ move towards each other. Such shift in their features finetune S and Cᵥ relative to their behavior in the absence of two-particle interactions with the bath.}, doi = {10.1016/j.jmmm.2022.170094}, author = {Vladimir P. Villegas and Cristine D. Villagonzalo} }