luc Posted March 19, 2005 Share Posted March 19, 2005 Which are the components of the Lorentz tensor in SR if the signature of the Minkowski metric is (-+++)? Can you give me a link to some page showing them? Thanks Link to comment Share on other sites More sharing options...
Tom Mattson Posted March 21, 2005 Share Posted March 21, 2005 Which Lorentz tensor? A Lorentz tensor is anything that transforms as a tensor under a Lorentz transformation. Link to comment Share on other sites More sharing options...
luc Posted March 22, 2005 Author Share Posted March 22, 2005 Tom, I'm referring to the Lorentz tensor used to transform a displacement 4-vector from one frame of reference to another The equation goes this way: D=LD' where L is the Lorentz tensor Link to comment Share on other sites More sharing options...
luc Posted March 24, 2005 Author Share Posted March 24, 2005 aNYBODY? Link to comment Share on other sites More sharing options...
Bob182 Posted March 24, 2005 Share Posted March 24, 2005 I think the one your after, for transforming any 4 vector into another frame, is: g -gb 0 0 -gb g 0 0 0 0 1 0 0 0 0 1 I had to use g = gamma factor and b = beta factor (beta = v/c) because I can't do all the fancy formulas and stuff that other people seem to be able to use. Link to comment Share on other sites More sharing options...
Johnny5 Posted March 24, 2005 Share Posted March 24, 2005 I think the one your after' date=' for transforming any 4 vector into another frame, is: g -gb 0 0 -gb g 0 0 0 0 1 0 0 0 0 1 I had to use g = gamma factor and b = beta factor (beta = v/c) because I can't do all the fancy formulas and stuff that other people seem to be able to use.[/quote'] Here you go: [math] \left( \begin{array}{cccc} \gamma \ \ \ -\gamma\beta \ 0 \ 0\\ -\gamma\beta \ \ \ \ \gamma \ 0 \ 0\\ 0 \ \ \ \ \ \ \ \ 0 \ \ 1 \ 0\\ 0 \ \ \ \ \ \ \ \ 0 \ \ 0 \ 1\\ \end{array} \right) [/math] Theres a bug in the Latex here, so I had to insert a bunch of spaces to get things in the right colums. Normally you just use the ampersand & to separate entries, but that feature isn't working right. Link to comment Share on other sites More sharing options...
Tom Mattson Posted March 24, 2005 Share Posted March 24, 2005 aNYBODY? Geez, calm down! No one owes you an answer, and we all have real lives that sometimes get in the way of making 20 posts a day. Well except for Johnny, apparently. Link to comment Share on other sites More sharing options...
Johnny5 Posted March 24, 2005 Share Posted March 24, 2005 Geez' date=' calm down! No one owes you an answer, and we all have real lives that sometimes get in the way of making 20 posts a day. Well except for Johnny, apparently. [/quote'] I'm at 22 a day, holy cow. Link to comment Share on other sites More sharing options...
Bob182 Posted March 24, 2005 Share Posted March 24, 2005 thanks johnny! always make things look so pretty Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now