Quantum law of large numbers in the strong operator topology of ℓp

Let 1p21\leqslant p\leqslant 2. Let A ⁣:ΩL(p)A\colon\Omega\to\mathcal{L}(\ell_p) be a generator of a semigroup eAte^{At} such that Ap\lVert A\rVert_p lies in a bounded ball. Let A1,A2,A_1,A_2,\ldots be independent identically distributed generators whose distribution coincides with that of AA. For t0t\geqslant 0, consider the compositions eA1t/neAnt/ne^{A_1t/n}\cdots e^{A_nt/n}.

Quantum law of large numbers. Under these assumptions, eA1t/neAnt/ne^{A_1t/n}\cdots e^{A_nt/n} converges in probability in the strong operator topology of p\ell_p to eEAte^{\operatorname{\mathbb{E}}At}, uniformly for tt in every compact segment.

The theorem preceding this conjecture establishes the analogous convergence in the strong operator topology of 2\ell_2. The conjecture asks whether the same law of large numbers holds in the stronger target topology of p\ell_p.

Sources & referencesView supporting material

Primary source

S. Dzhenzher and V. Sakbaev, “Quantum law of large numbers for Banach spaces”, arXiv:2410.07417 (2024).

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