4 papers
An algebra of proper observables at null infinity: Dirac brackets, Memory and Goldstone probes
Rodrigo Andrade e Silva, Simone Speziale
We develop a rigorous evaluation of Dirac brackets for classical observables on the phase space of radiative gravitational modes at null infinity that naturally incorporates memory…
Quantization of causal diamonds in (2+1)-dimensional gravity -- Part I: Classical reduction
Rodrigo Andrade e Silva
We develop the non-perturbative reduced phase space quantization of causal diamonds in (2+1)-dimensional gravity with a nonpositive cosmological constant. In this Part I we focus o…
Quantization of causal diamonds in (2+1)-dimensional gravity -- Part II: Group-theoretic quantization
Rodrigo Andrade e Silva
We develop the non-perturbative reduced phase space quantization of causal diamonds in (2+1)-dimensional gravity with a nonpositive cosmological constant. In Part I we described th…
General theory of swimming in curved spacetimes
Rodrigo Andrade e Silva
Swimming in curved spacetimes is a phenomenon whereby free bodies in curved spacetimes are able to propel themselves by performing cyclic internal motions. When originally proposed…