The [[non-locality]] of [[quantum mechanics]] and [[Newton]]ian physics contradicts the theories of relativity, which assume that time is an intrinsic part of space and assumes absolute locality. Causality breaks down under relativity if information can be transmitted faster than the speed of light. In addition, the [[uncertainty principle]] suggests that light [[photons]] must sometimes travel faster than the speed of light despite the assumption of relativity; "[t]he only known way to resolve this tension involves introducing the idea of antiparticles."<ref>http://nobelprize.org/nobel_prizes/physics/laureates/2004/wilczek-lecture.pdf (p. 102)</ref> Quantum field theory is another attempt to partially reconcile relativity with quantum mechanics. But "quantum field theory, which was born just fifty years ago from the marriage of quantum mechanics with relativity, is a beautiful but not very robust child."<ref>http://nobelprize.org/nobel_prizes/physics/laureates/1979/weinberg-lecture.pdf (p. 556)</ref> | The [[non-locality]] of [[quantum mechanics]] and [[Newton]]ian physics contradicts the theories of relativity, which assume that time is an intrinsic part of space and assumes absolute locality. Causality breaks down under relativity if information can be transmitted faster than the speed of light. In addition, the [[uncertainty principle]] suggests that light [[photons]] must sometimes travel faster than the speed of light despite the assumption of relativity; "[t]he only known way to resolve this tension involves introducing the idea of antiparticles."<ref>http://nobelprize.org/nobel_prizes/physics/laureates/2004/wilczek-lecture.pdf (p. 102)</ref> Quantum field theory is another attempt to partially reconcile relativity with quantum mechanics. But "quantum field theory, which was born just fifty years ago from the marriage of quantum mechanics with relativity, is a beautiful but not very robust child."<ref>http://nobelprize.org/nobel_prizes/physics/laureates/1979/weinberg-lecture.pdf (p. 556)</ref> |