Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Causal perturbation theory in general FRW cosmologies: Energy-momentum conservation and matching conditions
Physical Review D - Particles, Fields, Gravitation and Cosmology, Volume 67, No. 8, Year 2003
Notification
URL copied to clipboard!
Description
We describe energy-momentum conservation in relativistic perturbation theory in general Friedmann-Robertson-Walker (FRW) backgrounds with causal source terms, such as the presence of cosmic defect networks. A prescription for a linear energy-momentum pseudotensor in a curved FRW universe is provided, and it is decomposed using eigenfunctions of the Helmholtz equation. Conserved vector densities are constructed from the conformal geometry of these spacetimes and related to our pseudotensor, demonstrating the equivalence of these two approaches. We also relate these techniques to the role played by residual gauge freedom in establishing matching conditions at early phase transitions, which we can express in terms of components of our pseudotensor. This formalism is concise and geometrically sound on both sub- and superhorizon scales, thus extending existing work to a physically (and numerically) useful context. © 2003 The American Physical Society.
Authors & Co-Authors
Amery, Gareth
United Kingdom, Cambridge
Faculty of Mathematics
South Africa, Durban
University of Kwazulu-natal
Shellard, E. Paul S.
United Kingdom, Cambridge
Faculty of Mathematics
Statistics
Citations: 3
Authors: 2
Affiliations: 2
Identifiers
Doi:
10.1103/PhysRevD.67.083502
ISSN:
15507998
e-ISSN:
15502368
Study Design
Case-Control Study