Search results for string theory
Einstein Equations
Physics /
Feb 16, 2006 |
4.6 / 5 (72) |
0
Throughout the years mathematicians and physicists have been finding various solutions to Einstein’s equations. These solutions have helped scientists better understand the nature of our cosmos, as well develop ...
Proposed Spacetime Structure Could Provide Hints for Quantum Gravity Theory
Dec 16, 2009 |
4.6 / 5 (51) |
11
(PhysOrg.com) -- Spacetime, which consists of three dimensions of space and one time dimension, is such a large, abstract concept that scientists have a very difficult time understanding and defining it. Moreover, ...
Could Exotic Matter Provide an Infinite Source of Energy?
Sep 15, 2009 |
3.4 / 5 (35) |
63
(PhysOrg.com) -- Generally, scientists prefer to avoid the concept of perpetual motion. The idea of a machine that could produce movement that goes on forever, and using that movement to generate an endless ...
Magnetic monopoles detected in a real magnet for the first time
Sep 03, 2009 |
4.6 / 5 (48) |
38
Researchers from the Helmholtz Centre Berlin, in cooperation with colleagues from Dresden, St. Andrews, La Plata and Oxford, have for the first time observed magnetic monopoles and how they emerge in a real ...
Physicists Propose a Method to Observe Dirac Monopoles
Jul 28, 2009 |
4.6 / 5 (18) |
5
(PhysOrg.com) -- For decades, scientists have been intrigued by the hypothetical existence of magnetic monopoles - particles with only a north or south magnetic pole, thus having a nonzero magnetic charge. ...
Physicists Propose Scheme for Teleporting Light Beams
Jul 14, 2009 |
4.4 / 5 (22) |
21
(PhysOrg.com) -- Usually when physicists talk about quantum teleportation, they're referring to the transfer of quantum states from one particle to another without a physical link. Now, physicists have investigated ...
Galactic nuclei offer some indication of axionlike particles
May 28, 2009 |
4.5 / 5 (26) |
18
(PhysOrg.com) -- “Axionlike particles are interesting because they come up regularly when scientists study string theory. By looking at their properties, you hope to learn about string theory, or some other unified theory ...
Rotating Space Elevator Propels its Own Load
May 21, 2009 |
4.6 / 5 (46) |
33
(PhysOrg.com) -- The idea of the space elevator just got a little crazier. While the “traditional” concept involved using rocket propulsion or laser light pressure to propel loads up a cable anchored to Earth, ...
Possible Fifth Force Would Make Direct Detection of Dark Matter Unlikely
Mar 26, 2009 |
3.9 / 5 (40) |
52
(PhysOrg.com) -- No one knows exactly what a “fifth force” might be, but studies have shown that, if a long-range fifth force does exist, it could have surprising effects on the universe’s structure formation. ...
Spacetime May Have Fractal Properties on a Quantum Scale
Mar 25, 2009 |
4.8 / 5 (54) |
40
(PhysOrg.com) -- Usually, we think of spacetime as being four-dimensional, with three dimensions of space and one dimension of time. However, this Euclidean perspective is just one of many possible multi-dimensional ...
Cosmic strings might emit cosmic sparks, answer cosmological questions
Oct 09, 2008 |
4.1 / 5 (62) |
18
(PhysOrg.com) -- For astronomers, understanding what happened in the early moments of the universe could answer many questions in physics and astronomy. One possible player in the early universe is cosmic strings, which arise ...
Qubits and Branes Share Surprising Features
Jul 03, 2008 |
4.6 / 5 (95) |
5
What do black holes and entangled particles have in common? Until about a year ago, physicists thought that the two entities existed in completely separate worlds. Then, in 2007, physicist Michael Duff from ...
An oblivious transfer protocol for quantum cryptography
Jul 01, 2008 |
4.4 / 5 (22) |
2
“It's hard to beat the noise that you have with quantum information,” Barbara Terhal tells PhysOrg.com. “So our security protocol relies on the fact that storing quantum bits noiselessly is hard to do with current technology.”
String Theory Gets a Boost
Jan 29, 2008 |
4 / 5 (110) |
2
Among the scientific theories that excite a great deal of controversy are those theories that deal with strings. And the idea of cosmic strings gets as much play as any in scientific circles.
Brane trust: tunneling and stringy physics
Oct 30, 2007 |
4.2 / 5 (62) |
1
“As is often the case in science, everybody contributes their piece, forming a complete picture only after years hard work,” Amanda Weltman tells PhysOrg.com. Weltman, a scientist at the University of Cape Town and at Cam ...
