Back to Home

Blackholes Forum Message

Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem
RSS Button

Home | Discussion Forums | Blackholes I | Post
Login

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
Another Post Conserning GR

Forum List | Follow Ups | Post Message | Back to Thread Topics
Posted by Mark on October 1, 2001 17:30:11 UTC

I've heard of theoretical physicists manipulating Einstein's gravitational field equations in varying numbers of dimensions. For example, there is a three dimensional analogue where the curvature in a vacuum is completely determined by the flow of the force generators (energy and momentum). Formulated in four dimensions, however, Einstein's GR yields extra terms responsible for curvature, other than just energy alone. These extra terms, If I'm correct, are interpreted as "gravitational radiation." My question is: what happens if Einstein's GR is formulated in a number of dimensions, where two or more are treated as time? So four dimensions would be a space-time having two dimensions as time and two as space (2+2 as opposed to 3+1 dimensions). What would be the implications and consequences? Has this curiosity ever been addressed by physicists, and is it even possible to find solutions to GR in this type of dimensional arrangement?

Follow Ups:

Login to Post
Additional Information
Google
 
Web www.astronomy.net
DayNightLine
About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
Unless otherwise specified, web site content Copyright 1994-2020 John Huggins All Rights Reserved
Forum posts are Copyright their authors as specified in the heading above the post.
"dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET"
are trademarks of John Huggins