Forgive me if this topic was discussed before.

 

Assuming that the current physical models are valid and the universe expands with the rate of expansion accelerating - would an advanced civilization be able to sustain itself for an infinite ammount of time, given a finite amount of energy?

we would have to master the extraction of energy from space itself which seems to be ever increasing. space has a huge amount of enrgy within it. the discovery of the higgs supports this idea.

 

http://www.youtube.com/watch?v=c5_CA1-I9_4

Probably not, no.