- #1

- 212

- 4

ds

^{2}= -c

^{2}dt

^{2}+ dl

^{2}+ (k

^{2}+ l

^{2})(dᶿ

^{2}+ sin

^{2}(ᶿ)dø

^{2})

where k is the radius of the throat of the wormhole. (sorry for the small Greek letters)

Now I have two questions about this solution to Einstein's equations:

1. What does the coordinate l represent? All I know is that its domain is all real numbers and negative values of l apparently represents another universe.

2. When this solution was derived, did the equations include the cosmological constant or was that just left out?