CORRELATION BETWEEN PHASE STIFFNESS AND CONDENSATION ENERGY ACROSS THE NON-FERMI TO FERMI-LIQUID CROSSOVER IN THE YUKAWA-SACHDEV-YE-KITAEV MODEL ON A LATTICE

Correlation between phase stiffness and condensation energy across the non-Fermi to Fermi-liquid crossover in the Yukawa-Sachdev-Ye-Kitaev model on a lattice

We construct and analyze a lattice generalization of the Yukawa-Sachdev-Ye-Kitaev model, where spinful fermions experience onsite, random, all-to-all interactions with an Einstein bosonic mode, and random intersite coherent hopping.We obtain the exact self-consistent numerical solution of the model at mean-field level, and analytical approximations

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