The hope is that Fermi will produce much more data that will enable researchers to rule out more mundane explanations and launch us into the era when we can finally put theories that attempt to
unite quantum mechanics and gravity to the test.
Their common goal is to find a single theory that
unites quantum mechanics — the theory that describes the behaviour of matter on tiny scales — with Einstein's general theory of relativity, which describes space, time and gravity.
Not exact matches
Therefore, this notion of unbroken wholeness seems to be the one common feature which might
unite relativity and
quantum mechanics, whereas they fall apart on the attempt to describe in detail how things happen.
During the past century, electromagnetic theory
united electrostatics, magnetostatics, and network theory with optics in one stroke; special relativity combined classical
mechanics with electromagnetic theory; general relativity combined the theory of gravitation with physical geometry and special relativity; and
quantum mechanics united much of physics with, at least in principle, all of chemistry.
Without those infinities, there should be no fundamental obstacle to
uniting Barbour's theory with
quantum mechanics.
This mystery is tantalizing because it seems to involve a connection between
quantum mechanics and gravity and could provide a clue to
uniting general relativity with
quantum mechanics.
Most physicists today trying to
unite Einstein's theory of gravity with
quantum mechanics focus on microscopic realms beyond the reach of any conceivable experiment.
That said, if the non-dust B - mode signal is as large as the BICEP2 researchers claim, it requires the existence of large - field inflation at an energy scale that
unites the realms of
quantum mechanics and general relativity.
Much more recently, the math describing
quantum error correction has turned up in a completely unexpected context — efforts to understand the nature of spacetime by
uniting gravity with
quantum mechanics.
String theory has so far failed to live up to its promise as a way to
unite gravity and
quantum mechanics.