Advances in Kubo formulas of  strongly correlated metals 

Assa Auerbach, Technion

Transport coefficients of strongly interacting models are computationally challenging. 
I review recent simplifications of Kubo formulas, and advances in
 continued fractions,  and Hall coefficient summation formulas.These enabled calculations of
conductivities of the Hubbard  and Hard Core Bosons models, which may be relevant to cuprate superconductors.

1. Degeneracy-Projected Polarization Formulas for Hall-Type Conductivities, N. Bashan and A. Auerbach, Phys. Rev. Lett. 128, 036601 (2022).
2. Hall anomalies of the doped Mott insulator, I. Khait, S. Bhattacharyya, A. Samanta, and A. Auerbach, NPJ Quantum Mater. 8, 75 (2023).
3. Metallic transport of hard-core bosons, Sauri Bhattacharyya, Ayush De, Snir Gazit, and Assa Auerbach, Phys. Rev. B 109, 035117 (2024).