Failure of the large-N expansion in a bosonic tensor model
Aidan Herderschee, Michael Winer
A bstract We study the tensor model generalization of the quantum p -spherical model in the large- N limit. While the tensor model has the same large- N expansion as the disordered quantum p -spherical model, its ground state is superextensive, in contradiction with large- N perturbation theory. Therefore, the large- N expansion of this model catastrophically fails at arbitrarily large- N , without any obvious signal in perturbation theory.
arXiv:2410.06896•Journal of High Energy Physics•May 16, 2025•1 citation