Crossword Genius

Proposition about the nature of sub-atomic particles (6,6)

Ross

I believe the answer is:

string theory

(Other definitions for string theory that I've seen before include "Cosmological hypothesis concerning all fundamental particles - retrying tosh (anag)" , "Idea relating to subatomic particles" , "One idea in particle physics" .)

I've seen this clue in the Sydney Morning Herald.
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