Metallic transport of hard core bosons

• DOI: 10.48550/arxiv.2309.14479
• Publication Date: 2023-01-01
• Authors: Sauri Bhattacharyya; A. De; Snir Gazit; Assa Auerbach
• Keywords: Superconductivity (cond-mat.supr-con); Condensed Matter - Strongly Correlated Electrons; Strongly Correlated Electrons (cond-mat.str-el); Quantum Gases (cond-mat.quant-gas); Condensed Matter - Superconductivity; FOS: Physical sciences; Condensed Matter - Quantum Gases

Conductivities and Hall coefficients of two dimensional hard core bosons are calculated using the thermodynamic expansions Kubo formulas. At temperatures above superfluid transition, resistivity rises linearly is weakly dependent on boson filling. The zeroth order coefficient diverges toward zero unit fillings, reverses its sign at half correction terms, which up to fourth (Krylov) orders, do not alter this behavior. high temperature thermal reversed relative electric coefficient. We discuss relevance HCB transport metallic state short coherence length superconductors.