If you mean a ‘Unified Theory’ of everything joining relativity [General and Special] with quantum theory then no but the Super String and Brane Theory people are having good debates about it.
I don’t know much about correlated electron systems… as for whether there’s a ‘unified’ theory I’m not even sure of which theory governs the systems, whether or not it’s unified!
I have no idea! 😀 But if you find out, let me know and we can go and tell the President of the USA (coz thats who always gets told in the movies) 😀
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