Hamiltonian Floer Theory for Quantum Electrodynamics up to First Order in $\mathrm{\hslash }$

We use Hamiltonian Floer theory to prove a cuplength result about the existence of periodic solutions of particle-field systems with a Gaussian random field. As a concrete model we study stochastic electrodynamics, which approximates quantum electrodynamics up to first order in $\mathrm{\hslash }$, and is even exact in the case of low-order Hamiltonians or when the particles are treated classically.