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The Penrose property with a cosmological constant
Peter Cameron
May 13, 2022
Abstract: A spacetime satisfies the non-timelike boundary version of the Penrose property if the timelike future of any point on I− contains the whole of I+ . This property was first discussed for asymptotically flat spacetimes...
Geometric Algebra, Gravity and Gravitational Waves
Anthony N. Lasenby
Aug 07, 2020
Abstract: We discuss an approach to gravitational waves based on Geometric Algebra and Gauge Theory Gravity. After a brief introduction to Geometric Algebra (GA), we consider Gauge Theory Gravity, which uses symmetries expressed...
The Penrose property with a cosmological constant
Abstract
A spacetime satisfies the non-timelike boundary version of the Penrose property if the timelike future of any point on
...
P Cameron
May 16, 2022
The 1919 eclipse results that verified general relativity and their later detractors
Einstein became world famous on 7 November 1919, following press publication of a meeting held in London on 6 November 1919 where the results were announced of two British expeditions led by Eddington, Dyson and Davidson...
Change in Hamiltonian General Relativity with Spinors
Abstract In General Relativity in Hamiltonian form, change has seemed to be missing, defined only asymptotically, or otherwise obscured at best, because the Hamiltonian is a sum of first-class...
J Brian Pitts
Nov 22, 2021
Change in Hamiltonian General Relativity with Spinors
J. Brian Pitts
Nov 03, 2021
Abstract: In General Relativity in Hamiltonian form, change has seemed to be missing, defined only asymptotically, or otherwise obscured at best, because the Hamiltonian is a sum of first-class constraints and a boundary term...