Permanent anti-concentration conjecture for complex Gaussian matrices
Permanent anti-concentration conjecture for complex Gaussian matrices
Let be an matrix with independent entries distributed as , and let be a polynomial in its arguments. Permanent anti-concentration conjecture (PACC). There exists a polynomial such that for all and ,
This is the standard anti-concentration conjecture for the permanent and is used to control the probability that the permanent of a complex Gaussian matrix is unusually close to zero. Under this conjecture, the paper obtains that only zeros of lie within a ball of radius around the origin, implying that the bulk of the zeros lies at scale ; the conjecture itself is not resolved here.
Sources & referencesView supporting material
Primary source
Frederic Koehler and Pui Kuen Leung, “Approximating the Permanent of a Random Matrix with Polynomially Small Mean: Zeros and Universality”, arXiv:2604.01367 (2026).
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