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arXiv · 1908.10855

Fermionic eigenvector moment flow

Lucas Benigni
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Abstract

We exhibit new functions of the eigenvectors of the Dyson Brownian motion which follow an equation similar to the Bourgade-Yau eigenvector moment flow. These observables can be seen as a Fermionic counterpart to the original (Bosonic) ones. By analyzing both Fermionic and Bosonic observables, we obtain new correlations between eigenvectors. The fluctuations $\sum_{α\in I}u_k(α)^2-{\vert I\vert}/{N}$ decorrelate for distinct eigenvectors as the dimension $N$ grows and an optimal estimate on the partial inner product $\sum_{α\in I}u_k(α)u_\ell(α)$ between two eigenvectors is given. These static results obtained by integrable dynamics are stated for generalized Wigner matrices and should apply to wide classes of mean field models.

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Lucas Benigni. 2020-11-03. Fermionic eigenvector moment flow. https://doi.org/10.1007/s00440-020-01018-0

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