- #1

thatboi

- 132

- 18

I am currently reading Bardeen's Paper on The Four Laws of Black Hole Thermodynamics: https://projecteuclid.org/journals/...ws-of-black-hole-mechanics/cmp/1103858973.pdf

and am struggling with the derivation of equation 26. Specifically, I do not see how he uses the Lie derivative statement just above the equation to make the 2 terms disappears in the second equality because one of the terms involves the differential of n as opposed to l.