Undergrad What is the Formula for Computing Surface Metric on a PF Surface?

Click For Summary
The discussion focuses on computing a specific formula involving the surface metric on a PF surface, specifically the expression that includes the determinant of the metric tensor and partial derivatives. The user provides the determinant, √g, and the metric tensor, g, in matrix form. They initially seek assistance in calculating the expression but later indicate they have resolved the issue independently. The conversation highlights the complexity of surface metrics in mathematical physics. Ultimately, the user successfully finds the solution to their query.
member 428835
Hi PF!

I'm trying to compute

$$
\frac{1}{\sqrt g}\frac{\partial}{\partial u^\mu}\left( \sqrt g g^{\mu v} \frac{\partial \eta(s,\phi))}{\partial u^v} \right)
$$

where I found

$$
\sqrt g = \csc^2\alpha \sin s\\
g =
\begin{bmatrix}
\csc^2\alpha &0\\
0 & \csc^2\alpha\sin^2 s
\end{bmatrix}
$$

where ##\mu,v = 1,2##. Can someone help me out here? I can link the paper I'm reading this from if it helps, but I think I've communicated everything relevant.
 
Physics news on Phys.org
Can anyone point me in a direction where I could figure out how to compute the above?
 
Nevermind, I got it
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
3K
Replies
3
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 0 ·
Replies
0
Views
2K
  • · Replies 6 ·
Replies
6
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 2 ·
Replies
2
Views
1K
  • · Replies 4 ·
Replies
4
Views
4K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 7 ·
Replies
7
Views
4K