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- W4288102562 abstract "We investigate the $T=0$ phase diagram of a variant of the one-dimensional extended Hubbard model where particles interact via a finite-range soft-shoulder potential. Using Density Matrix Renormalization Group (DMRG) simulations, we evidence the appearance of Cluster Luttinger Liquid (CLL) phases, similarly to what first predicted in a hard-core bosonic chain [M. Mattioli, M. Dalmonte, W. Lechner, and G. Pupillo, Phys. Rev. Lett. 111, 165302]. As the interaction strength parameters change, we find different types of clusters, that encode the order of the ground state in a semi-classical approximation and give rise to different types of CLLs. Interestingly, we find that the conventional Tomonaga Luttinger Liquid (TLL) is separated by a critical line with a central charge $c=5/2$, along which the two (spin and charge) bosonic degrees of freedom (corresponding to $c=1$ each) combine in a supersymmetric way with an emergent fermionic excitation ($c=1/2$). We also demonstrate that there are no significant spin correlations." @default.
- W4288102562 created "2022-07-28" @default.
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- W4288102562 date "2019-09-26" @default.
- W4288102562 modified "2023-09-27" @default.
- W4288102562 title "One-dimensional extended Hubbard model with soft-core potential" @default.
- W4288102562 doi "https://doi.org/10.48550/arxiv.1909.12168" @default.
- W4288102562 hasPublicationYear "2019" @default.
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