12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > On the energy-momentum density of gravitational...
View graph of relations

« Back

On the energy-momentum density of gravitational plane waves.

Research output: Contribution to journalJournal article

Published

Journal publication date21/03/2004
JournalClassical and Quantum Gravity
Journal number6
Volume21
Number of pages6
Pages1459-1464
Original languageEnglish

Abstract

By embedding Einstein's original formulation of general relativity into a broader context, we show that a dynamic covariant description of gravitational stress–energy emerges naturally from a variational principle. A tensor TG is constructed from a contraction of the Bel tensor with a symmetric covariant second degree tensor field Φ and has a form analogous to the stress–energy tensor of the Maxwell field in an arbitrary spacetime. For plane-fronted gravitational waves helicity-2 polarized (graviton) states can be identified carrying non-zero energy and momentum.