3 papers
gr-qc2018
Algebra of Universal Horizon Preserving Diffeomorphisms
David Mattingly, Matthew Roberson, Sayandeb Basu
In relativistic gravity, requiring a spacetime hypersurface be a Killing horizon breaks the general covariance of general relativity. The residual algebra of horizon preserving dif…
astro-ph2005
Constraints from cosmic rays on non-systematic Lorentz violation
Sayandeb Basu, David Mattingly
In this article we analyze the radiation loss from a high energy cosmic ray proton propagating in a spacetime with non-systematic Lorentz violation. From an effective field theory…
gr-qc2004
Perturbation theory in covariant canonical quantization
Sayandeb Basu
I investigate a new idea of perturbation theory in covariant canonical quantization. I present preliminary results for a toy model of a harmonic oscillator with a quartic perturbat…