If we could figure out a way to destabilize matter to allow it to decay by altering the weak nuclear force we could turn matter directly into energy....
Interesting thought. There was a post recently that had an experiment that caused the Bose-Einsten condensenate to happen at higher temperatures because of the shape of the containg cavity. I was wondering if anyone had achieved the Bose Nova effect using that procedure and Lithium atoms.
But then I also wonder if Hawkings has said that micro black holes evaporate in a flare of energy , couldn’t an advanced race inject matter at the same rate it is evaporating and convert matter to energy. Might be tricky.