https://doi.org/10.1140/epjb/s10051-021-00242-4
Regular Article - Solid State and Materials
Phase diagram of the SU(3) Fermi–Hubbard model with next-neighbor interactions
Departamento de Física, Universidad Nacional de Colombia, A. A. 5997, Bogotá, Colombia
Received:
18
August
2021
Accepted:
5
November
2021
Published online:
24
November
2021
We explore the zero-temperature phase diagram of a one-dimensional gas composed of three-color fermions, which interact locally and with their next neighbors. Using the density matrix renormalization group method and considering one-third filling, we characterize the ground state for several values of the parameters, finding diverse phases, namely phase separation, spin-density wave, pairing phase, a metallic phase, two different charge-density waves, and a non-separable state with modulation of charge. We show that the von Neumann block entropy and the fidelity susceptibility are useful for estimating the borders between the phases.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2021
