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hep-th2025
Shadow sectors of gauge theories
Loris Del Grosso, David E. Kaplan, Francesco Serra
We show that both abelian and non-abelian gauge theories admit configurations in which the fields behave as if in the presence of static charge densities, or ``shadow charges". The…
hep-th2024
Wrong Signs are Alright
David E. Kaplan, Surjeet Rajendran, Francesco Serra
It has been shown that some Lorentz-invariant quantum field theories, such as those with higher-dimensional operators with negative coefficients, lead to superluminality on some cl…