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Hidden XY structure of the bond-charge Hubbard model

arXiv
Authors: Marco Roncaglia, Cristian Degli Esposti Boschi, Arianna Montorsi

Year

2010

Paper ID

11031

Status

Preprint

Abstract Read

~2 min

Abstract Words

60

Citations

N/A

Abstract

The repulsive one-dimensional Hubbard model with bond-charge interaction (HBC) in the superconducting regime is mapped onto the spin-1/2 XY model with transverse field. We calculate correlations and phase boundaries, realizing an excellent agreement with numerical results. The critical line for the superconducting transition is shown to coincide with the analytical factorization line identifying the commensurate-incommensurate transition in the XY model.

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  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
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  • The repulsive one-dimensional Hubbard model with bond-charge interaction (HBC) in the superconducting regime is mapped onto the spin-1/2 XY model with transverse field.

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