Quantum heat engine and refrigeration processes and magnetoelectric effects in the open half-filled particle-hole symmetric Fermi-Hubbard dimer
Year: 2026
Type: article
Abstract: Particle-hole symmetry is a fundamental feature among bipartite systems in simulating strongly correlated materials. In this letter, numerical simulations are used to describe the magnetocaloric, electrocaloric, and magnetoelectric profiles of the open half-filled Fermi-Hubbard dimer with particle-hole symmetry. Through temperature-dependent plots and response function behaviors, it is shown that quantum Carnot cycles can be simulated in the neighborhood of external electromagnetic fields where quantum level crossings occur. Furthermore, the peaks of magnetic and electric susceptibilities span smaller domains when the particle-hole symmetry is in effect.
Source: Physics Letters A
Institutions: Mapúa University, University of the Philippines Diliman
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,150
OpenAlex ID: W7203703190