Erratum, I should have written “(quark disappears) (weak interaction happens) (antiquark appears)”. My point is that the algebraic reversal of that expression is different from the time reversal of it, so those two parts of the Hamiltonian do actually say different things about the amplitude gradients in configuration space, even when you think about it “timelessly”.
Erratum, I should have written “(quark disappears) (weak interaction happens) (antiquark appears)”. My point is that the algebraic reversal of that expression is different from the time reversal of it, so those two parts of the Hamiltonian do actually say different things about the amplitude gradients in configuration space, even when you think about it “timelessly”.