Recent content by 5not42!

My question is related to M. Alcubierres paper on the warp drive within general relativity. I was wondering about the realizability of this, setting the three energy conditions aside for the moment. Assuming the highest energy density known to me as an energy source, namely something like...

Wow, I will need some time to go through the literature, thank you all very much for your thoughts.

First of all, many thanks for your answers. Based on your answers, I would like to recycle my question to why would an acausal theory be incapable of predictions ? The way I see it, we could build a theory of which (in set theory language) subset A is causal, and subset B acausal. Therefore...

I have been wondering for some time now why causality is a prerequisite for every "good theory" all the way from classical mechanics, to QM, even in QFT the correlators for spacelike separated interactions cancel out. Now, since we usually take make a general theory and then usually simplify...