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Abstract

We propose the construction of an ensemble of unitary random matrices (UMM)
for the Riemann zeta function. Our approach to this problem is `piecemeal', in
the sense that we consider each factor in the Euler product representation of
the zeta function to first construct a UMM for each prime $p$. We are able to
use its phase space description to write the partition function as the trace of
an operator that acts on a subspace of square-integrable functions on the
p-adic line. This suggests a Berry-Keating type Hamiltonian. We combine the
data from all primes to propose a Hamiltonian and a matrix model for the
Riemann zeta function.