Abstract
An identity of Szego, and a volume calculation, heuristically suggest a simple expression for the distribution of Verblunsky coefficients with respect to the (normalized) exponential of the S1 trace of the Gaussian free field. This heuristic expression is not quite correct. A proof of the correct formula has been found by Chhaibi and Najnudel (2019). Their proof uses random matrix theory and overcomes many difficult technical issues. In addition to presenting the Szego perspective, we show that the Chhaibi and Najnudel theorem implies a family of combinatorial identities (for moments of measures) which are of intrinsic interest.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 899-924 |
| Number of pages | 26 |
| Journal | Rocky Mountain Journal of Mathematics |
| Volume | 52 |
| Issue number | 3 |
| DOIs | |
| State | Published - Jun 2022 |
| Externally published | Yes |
Keywords
- Gaussian free field
- Loop group factorization
- Verblunsky coefficients
ASJC Scopus subject areas
- General Mathematics
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