Light Cone Coordinates
Get Light Cone Coordinates essential facts below. View Videos or join the Light Cone Coordinates discussion. Add Light Cone Coordinates to your topic list for future reference or share this resource on social media.
Light Cone Coordinates

In special relativity, light-cone coordinates is a special coordinate system where two of the coordinates, x+ and x- are null coordinates and all the other coordinates are spatial. Call them .

Assume we are working with a (d,1) Lorentzian signature.

Instead of the standard coordinate system (using Einstein notation)


with we have

with , and .

Both x+ and x- can act as "time" coordinates.

One nice thing about light cone coordinates is that the causal structure is partially included into the coordinate system itself.

A boost in the tx plane shows up as , , . A rotation in the ij-plane only affects . The parabolic transformations show up as , , . Another set of parabolic transformations show up as , and .

Light cone coordinates can also be generalized to curved spacetime in general relativity. Sometimes calculations simplify using light cone coordinates. See Newman-Penrose formalism.

Light cone coordinates are sometimes used to describe relativistic collisions, especially if the relative velocity is very close to the speed of light. They are also used in the light cone gauge of string theory.

See also

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



Music Scenes