Author

Kevin D. Stubbs

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Preprint Oct 2026

On the Metastability of the Mean-Field Interchange Model for Local Dimension $\geq 3$

Many quantum systems are believed to thermalize slowly at low temperatures due to the existence of metastable phases. However, there are cases where further cooling can restore polynomial-time thermalization: we demonstrate that the Davies dynamics of the mean-field interchange model with local dimension $d\geq 3$ and...

S. Escobar, Lin Lin, Michael Ragone et al. · 0 citations

Preprint Jul 2026

Spectral Gap of the Davies Generator for the Mean-Field Heisenberg Model

The mean-field Heisenberg ferromagnet is a quantum spin model on the complete graph with isotropic spin-1/2 interactions. This non-commuting Hamiltonian is permutation and $\mathsf{SU}(2)$ invariant, and its Gibbs states undergo an $\mathsf{SU}(2)$ symmetry breaking phase transition at inverse temperature $\beta=2$. We...

J. Basso, Thiago Bergamaschi, Lin Lin et al. · 1 citation