English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/24482
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

xPert: computer algebra for metric perturbation theory

AuthorsBrizuela, David ; Martín-García, José María ; Mena Marugán, Guillermo A.
KeywordsMetric perturbation theory
General relativity
Tensor computer algebra
Issue Date24-Feb-2009
PublisherSpringer
CitationGeneral Relativity and Gravitation, 41 (10) : 2415-2431 (2009)
AbstractWe present the tensor computer algebra package xPert for fast construction and manipulation of the equations of metric perturbation theory, around arbitrary backgrounds. It is based on the combination of explicit combinatorial formulas for the nth order perturbation of curvature tensors and their gauge changes, and the use of highly efficient techniques of index canonicalization, provided by the underlying tensor system xAct, for Mathematica. We give examples of use and show the efficiency of the system with timings plots: it is possible to handle orders n = 4 or n = 5 within seconds, or reach n = 10 with timings below 1 h.
Description11 pags., 4 figs.
Publisher version (URL)http://dx.doi.org/ 10.1007/s10714-009-0773-2
URIhttp://hdl.handle.net/10261/24482
DOI10.1007/s10714-009-0773-2
ISSN1572-9532
Appears in Collections:(CFMAC-IEM) Artículos
Files in This Item:
File Description SizeFormat 
brizuela.pdf214,4 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.