If space-like Killing vectors are associated with a conserved momentum, and timelike Killing vectors are associated with a conserved energy, what is the conserved quantity associated with a null Killing vector?(adsbygoogle = window.adsbygoogle || []).push({});

For instance, "v" in ingoing Eddington Finklestein coordinates.

https://www.physicsforums.com/showthread.php?t=656805#post4637332

The line element is:

−(1−2m/r) dv^2+2 dv dr

None of the metric coefficient's are a function of v (and GR Tensor's KillingTest confirms that ##\partial / \partial v## is a Killing vector).

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Null Killing vectors

Loading...

**Physics Forums - The Fusion of Science and Community**