Evanescent Effects Can Alter Ultraviolet Divergences in Quantum Gravity without Physical Consequences

Zvi Bern, Clifford Cheung, Huan-Hang Chi +3

Evanescent operators such as the Gauss-Bonnet term have vanishing perturbative matrix elements in exactly D=4 dimensions. Similarly, evanescent fields do not propagate in D=4; a th…