Quasilocal energy in modified gravity. (10th December 2015)

• Record Type: Journal Article
• Authors: Faraoni, Valerio
• Is Part Of: Classical and quantum gravity. Volume 33:Number 1(2016:Jan.)
• Publication Date: 2015-12-10
• Subjects: Scalar–tensor gravity -- quasilocal energy -- Hawking–Hayward mass; 04.50.Kd -- 04.90.+e; Quantum gravity -- Periodicals; Gravitation -- Periodicals; Relativity (Physics) -- Periodicals; Space and time -- Periodicals; Periodicals; 521.1
• DOI: 10.1088/0264-9381/33/1/015007
• Languages: English
• ISSNs: 0264-9381

Abstract

Abstract: A new generalization of the Hawking–Hayward quasilocal energy to scalar–tensor gravity is proposed without assuming symmetries, asymptotic flatness, or special spacetime metrics. The procedure followed is simple but powerful and consists of writing the scalar–tensor field equations as effective Einstein equations and then applying the standard definition of quasilocal mass. An alternative procedure using the Einstein frame representation leads to the same result in vacuo .