An Exchange Identity for Non-linear Fields
نویسندگان
چکیده
We establish a useful identity for intertwining a creation or annihilation operator with the heat kernel of a self-interacting bosonic field theory. I Background Consider creation operators a(f) and annihilation operators a(h), both linear in their respective test functions f, h ∈ L(R, dx), acting on the Fock Hilbert space H, and satisfying the canonical commutation relations [a(h), a(f)] = 〈
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