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math-ph2026★ 2 cited
A Classifying Space for Phases of Matrix Product States
Daniel D. Spiegel, Marvin Qi, David T. Stephen +3
We construct a topological space consisting of translation invariant injective matrix product states (MPS) of all physical and bond dimensions and show that it has th…
math-ph2025
Foundations of Double Operator Integrals with a Variant Approach to the Nonseparable Case
Robert Ferydouni, Daniel D. Spiegel
We aim to give a self-contained and detailed yet simplified account of the foundations of the theory of double operator integrals, in order to provide an accessible entry point to…