News tagged with gravity theory

Mapping the road to quantum gravity

The road uniting quantum field theory and general relativity – the two great theories of modern physics – has been impassable for 80 years. Could a tool from condensed matter physics finally help map ...

21 hours ago 4.3 / 5 (14) 6

Is dark energy static or dynamic?

(Phys.org)—While hypothesized dark energy can explain observations of the universe expanding at an accelerating rate, the specific properties of dark energy are still an enigma. Scientists think that dark energy could take ...

Nov 12, 2012 4.5 / 5 (19) 48 | with audio podcast feature

Quantum steps towards the Big Bang

(Phys.org) —Present-day physics cannot describe what happened in the Big Bang. Quantum theory and the theory of relativity fail in this almost infinitely dense and hot primal state of the universe. Only ...

Sep 03, 2013 4.4 / 5 (74) 109 | with audio podcast

Looking at quantum gravity in a mirror

Einstein's theory of gravity and quantum physics are expected to merge at the Planck-scale of extremely high energies and on very short distances. At this scale, new phenomena could arise. However, the Planck-scale ...

Mar 18, 2012 4.8 / 5 (27) 9 | with audio podcast