(Phys.org) —One of the more controversial theories of quantum gravity, which attempts to unify quantum mechanics and general relativity, is semiclassical gravity, which was proposed in the 1960s. As its name suggests, semiclassical ...
May 08, 2013
4.8 / 5 (25)
21
| 
(Phys.org) —Physicists at ETH Zurich have demonstrated one of the quintessential effects of quantum optics—known as the Hong-Ou-Mandel effect—with microwaves, whose frequency is 100'000 times lower ...
May 08, 2013
4.9 / 5 (9)
0
|
(Phys.org) —Mathematics is, in essence, an artificial language for precisely articulating theories about the physical world. Unlike natural language, however, translating different classes of mathematics ...
Apr 29, 2013
4.8 / 5 (45)
37
|
(Phys.org) —New research shows that movement of the ring-like molecule pyrrole over a metal surface runs counter to the centuries-old laws of 'classical' physics that govern our everyday world.
Apr 26, 2013
4.7 / 5 (21)
60
|
(Phys.org) —A strange stellar pair nearly 7,000 light-years from Earth has provided physicists with a unique cosmic laboratory for studying the nature of gravity. The extremely strong gravity of a massive ...
Apr 25, 2013
4.8 / 5 (98)
814
|
(Phys.org) —An international team of researchers succeeds in generating flashes of extreme ultraviolet radiation via the reflection from a mirror that moves close to the speed of light.
Apr 24, 2013
5 / 5 (20)
4
|
A team led by the Austrian physicist Anton Zeilinger has carried out an experiment with photons, in which they have closed an important loophole. The researchers have thus provided the most complete experimental ...
Apr 15, 2013
4.1 / 5 (28)
132
|
(Phys.org) —As the universe expands, it is continually subjected to energy shifts, or "quantum fluctuations," that send out little pulses of "sound" into the fabric of spacetime. In fact, the universe is thought to have ...
Apr 03, 2013
4.9 / 5 (14)
11
|
(Phys.org) —In the strange world of quantum mechanics, the vacuum state (sometimes referred to as the quantum vacuum, simply as the vacuum) is a quantum system's lowest possible energy state. While not ...
Mar 08, 2013
5 / 5 (22)
139
|
Surprising connections between very different areas of physics and unexpected spin-offs from theory were explored by quantum physicist Prof. Sir Michael Berry in a lecture entitled "How quantum physics democratised ...
Mar 07, 2013
4.4 / 5 (7)
2
Research by scientists at the University of York has revealed new insights into the life and death of black holes.
Mar 06, 2013
4.6 / 5 (31)
41
|
Researchers at the University of Rochester and the University of Ottawa have applied a recently developed technique to directly measure for the first time the polarization states of light. Their work both ...
Mar 03, 2013
4.9 / 5 (21)
18
|
You may have heard in the recent media that the world was going to end. Uh, again. Worse still, the devastation wasn't limited to Earth; the whole universe might end. Bad news, right? And you thought 2012 was the year to mark on your calendar. ...
Feb 28, 2013
4.1 / 5 (14)
44
A team of physicists at the University of Innsbruck, Austria, performed an experiment that seems to contradict the foundations of quantum theory—at first glance. The team led by Rainer Blatt reversed a ...
Feb 15, 2013
3.8 / 5 (12)
142
|
Albert Einstein called quantum entanglement—two particles in different locations, even on other sides of the universe, influencing each other—"spooky action at a distance."
Feb 08, 2013
2.8 / 5 (12)
24
