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arXiv · 2012.12393

Two-fluid coexistence in a spinless fermions chain with pair hopping

Lorenzo Gotta·Leonardo Mazza·Pascal Simon·Guillaume Roux
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Abstract

We show that a simple one-dimensional model of spinless fermions with pair hopping displays a phase in which a Luttinger liquid of paired fermions coexists with a Luttinger liquid of unpaired fermions. Our results are based on extensive numerical density-matrix renormalisation group calculations and are supported by a two-fluid model that captures the essence of the coexistence region.

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Lorenzo Gotta, Leonardo Mazza, Pascal Simon, Guillaume Roux. 2020-12-22. Two-fluid coexistence in a spinless fermions chain with pair hopping. https://doi.org/10.1103/physrevlett.126.206805

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