出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：In this talk, I describe and defend four non-standard claims about four effective field theories,
and try to extract some lessons about the limits of effective field theory. The four theses (and a
capsule diagnosis given in parentheses) are: 1) Kaon loops are not a reliable part of chiral
perturbation theory (dimensional regularization does not know about the chiral scale), 2) Regge
physics is inappropriately missing from SCET (an infinite set of scales are needed) 3) There is
likely a barrier in the use of EFT in general relativity in the extreme infrared (curvature effects
build up) and 4) Gauge non-invariant operators should be included in describing physics beyond
the Standard Model (as they could probe the idea of emergent gauge symmetry and falsify string
theory).
