PIRSA:21060032

Video URL

https://pirsa.org/21060032

Mass loss law for weak gravitational fields: With or without a positive cosmological constant

Hoque, S.J. (2021). Mass loss law for weak gravitational fields: With or without a positive cosmological constant. Perimeter Institute for Theoretical Physics. https://pirsa.org/21060032

Hoque, Sk Jahanur. Mass loss law for weak gravitational fields: With or without a positive cosmological constant. Perimeter Institute for Theoretical Physics, Jun. 08, 2021, https://pirsa.org/21060032 

          @misc{ scivideos_PIRSA:21060032,
            doi = {10.48660/21060032},
            url = {https://pirsa.org/21060032},
            author = {Hoque, Sk Jahanur},
            keywords = {Other Physics},
            language = {en},
            title = {Mass loss law for weak gravitational fields: With or without a positive cosmological constant},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2021},
            month = {jun},
            note = {PIRSA:21060032 see, \url{https://scivideos.org/pirsa/21060032}}
          }

Sk Jahanur Hoque Charles University

Talk numberPIRSA:21060032
DOI10.48660/21060032
Source RepositoryPIRSA
Collection
Talk Type Conference
Subject

Abstract

Bondi's celebrated mass loss formula measures the rate of change of energy carried away from an isolated system (in asymptotically flat space-time) by gravitational radiation. In this talk, we generalize this idea to the de Sitter setting. We derive a formula for the total canonical energy, and its flux, of weak gravitational waves on a de Sitter background. Based on arXiv:2003.09548 [gr-qc], arXiv: 2103.05982 [gr-qc].