I’m a little late off the block with this one, but it’s something I heard about through the Physics World podcast a little while ago. To give some context, the Breakthrough prize (worth $3m) was recently awarded to 3 physicists for their work on “supergravity”.
Supergravity attempts to unify all of physics by introducing a graviton, a spin-2 particle which would help combine the theory of relativity with super symmetry through all of space-time. Needless to say, it if were correct, it would be a huge leap for physics. The issue? It has never been proven. Despite all its potential, the lack of experimental proof from the LHC (Large Hadron Collider) casts doubt upon the theory.
So when the breakthrough prize was awarded to the 3 physicists- Sergio Ferrara (CERN), Daniel Freedman (Massachusetts Institute of Technology) and Peter van Nieuwenhuizen (Stanford)- there was undoubtedly going to be some controversy over it. Should the breakthrough prize be given to unproven physics?
On one hand, no. Physics is a field of research and careful experiments. Experimental data must support a theory for the theory to be accepted as true, or else the theory is nothing more than a wild guess or speculation. The lack of proof to support supergravity reduces it to a guess. A very mathematical guess, but a guess none the less. Giving such a large and important prize for something that looks nice but has no practical use, as as commented by others, sends out the wrong idea, that the breakthrough prize is awarded for popular ideas than correct ideas. In the long run, this may push physicists into creating wild speculation rather than focusing on proven, albeit less “interesting”, physics.
On the other hand yes. The work these 3 physicists did was pioneering, and a brillinat display of maths. Despite being unproven, the theory opens up new ways of thinking. The first steps towards forming a correct (or more accurate theory) begins with the ground work being laid out first, and then other physicists taking those ideas and developing them further, increasing the potential for the formation of new, more accurate theories in the future. The work on supergravity may be something that is important to physics in the long run as opposed to something that can be proven exactly correct or proven immediately.
I personally think supergravity deserved to be awarded the breakthrough prize. For physics which demands rigorous experimental proof, the Nobel prize already exists. The breakthrough prize, I believe, exists to reward physicists who work on research that may fall outside the Nobel prize region and otherwise would not receive as much acknowledgement as it should.