Correlators for the Wigner-Smith time-delay matrix of chaotic cavities

We study the Wigner-Smith time-delay matrix $Q$ of a ballistic quantum dot supporting $N$ scattering channels. We compute the $v$-point correlators of the power traces $\mathrm{Tr} Q^κ$ for arbitrary $v\geq1$ at leading order for large $N$ using techniques from the random matrix theory approach to quantum chromodynamics. We conjecture that the cumulants of the $\mathrm{Tr} Q^κ$'s are integer-valued at leading order in $N$ and include a MATHEMATICA code that computes their generating functions recursively.

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