Riemann hypothesi s is "is a conjecture that the Riemann zeta function has its zeros only at the negative even integers and complex numbers with real part 1 2 ". The Riemann zeta function is conventionally represented as the sum: ζ ( z ) = ∑ k = 1 ∞ 1 k z Recently, I read in Peter Woit's blog that some researchers have published a paper that describes a Hamiltonian operator H that can be used to possibly solve this problem. This operator has the property that if the eigenfunctions obey a suitable boundary condition, then the associated eigenvalues correspond to the nontrivial zeros of the Riemann zeta function! The paper is also available as a preprint . In a sense, this paper says that one can set up a quantum system whose evolution "solves" Riemann hypothesis. To me this is a reasonable approach to the solution of the problem. And it reminds me of the work of Leonard Adlemam .