106 citations · 242 across the 8 of their papers we have counts for
7 papers
An Ultraviolet Finite Theory of Scalars
Francesco Calisto, Clifford Cheung
We construct a theory of scalars that is free of short-distance infinities to all orders in perturbation theory. Loop divergences are neutralized by momentum-dependent interactions…
Thermal Positivity
Clifford Cheung, Rachel A. Rosen
We argue that Lorentz invariance and unitarity impose sharp constraints on thermodynamic quantities. By relating thermal vacuum diagrams to forward scattering amplitudes, we derive…
On Perturbatively Dressed Observables
Clifford Cheung, Allic Sivaramakrishnan, Jordan Wilson-Gerow +1
A central lesson of gravity is that local observables are ill-defined. Coordinates themselves are a redundancy of description, so any particular point in spacetime is only meaningf…
New Physics Hiding at the Ends
Clifford Cheung, Ira Z. Rothstein
Is field space infinite? If not, it either loops back on itself or ends altogether. Periodic boundary conditions are of course familiar, but field space endpoints--which appear in…
Gravitational Scattering and Beyond from Extreme Mass Ratio Effective Field Theory
Clifford Cheung, Julio Parra-Martinez, Ira Z. Rothstein +2
We explore a recently proposed effective field theory describing electromagnetically or gravitationally interacting massive particles in an expansion about their mass ratio, also k…
Generalized Symmetry in Dynamical Gravity
Clifford Cheung, Maria Derda, Joon-Hwi Kim +3
We explore generalized symmetry in the context of nonlinear dynamical gravity. Our basic strategy is to transcribe known results from Yang-Mills theory directly to gravity via the…