Definition of quantum physics in US English:

quantum physics

plural noun

  • treated as singular The branch of physics concerned with quantum theory.

    ‘quantum physics allows for particles to be in two states at the same time’
    • ‘The successful candidate should be able to demonstrate a solid background and interest in quantum physics and condensed matter theory.’
    • ‘One aspect of quantum physics is that the act of observing can change the thing being observed.’
    • ‘He offers an eminently readable account of parallel worlds and their various levels, and also runs through the history of quantum physics.’
    • ‘Success in this area of research requires a deeper understanding of quantum physics.’
    • ‘"Certainly since Einstein, there have been many theories of quantum physics, and Stephen Hawking came along during a period of its greatest change."’