A combined lattice and analytic study shows that the susceptibility term in a modified Lee-Weinberg equation does not regulate late-time freeze-out in a stop-like dark matter model, leaving mass splitting as the only equilibrium regulator.
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Non-relativistic susceptibility and a dark matter application
A combined lattice and analytic study shows that the susceptibility term in a modified Lee-Weinberg equation does not regulate late-time freeze-out in a stop-like dark matter model, leaving mass splitting as the only equilibrium regulator.