106 citations · 242 across the 8 of their papers we have counts for
4 papers · 1 filter
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…
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…