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arXiv · 2004.11249

Phase diagram of the SU$(3)$ Fermi-Hubbard model with next-neighbor interactions

A. Pérez-Romero·R. Franco·J. Silva-Valencia
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Abstract

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.

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A. Pérez-Romero, R. Franco, J. Silva-Valencia. 2020-04-22. Phase diagram of the SU$(3)$ Fermi-Hubbard model with next-neighbor interactions. https://doi.org/10.1140/epjb/s10051-021-00242-4

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