Gourt > Science > Physics > Cosmology > Branes
In theoretical physics, branes or p-branes are spatially extended objects that appear in string theory and its relatives (M-theory and brane cosmology). The variable p refers to the dimension of the brane. That is, a 0-brane is a zero-dimensional particle, a 1-brane is a string, a 2-brane is a "membrane", etc. Every p-brane sweeps out a (p+1)-dimensional world-volume as it propagates through spacetime.
Originally string theory was a theory of 1-branes called strings. By the mid-1990s it became apparent that the theory could be extended to also include higher dimensional objects. Typically these objects are non-perturbative features of the theory (meaning they do not appear in perturbation theory) which is partially why early string theorists were unaware of them.
Besides the fundamental string (or F-string) of string theory and its magnetic dual, the NS5-brane, the most important type of branes that appear are the D-branes. Different types of D-branes appear in different theories. Even Dp-branes for p appear in type IIA string theory where as the odd Dp-branes appear in type IIB string theory.
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@boxbrown man that shit is relentless. They need to add withering sarcasm like speak you're branes http://bit.ly/z1UY
SMixtapes (Terence Fox) Tue, 05 Jan 2010 23:30:12 -0000
@boxbrown man that shit is relentless. They need to add withering sarcasm like speak you're branes http://bit.ly/z1UY
@paulkidder Don't worry sweet, HYS is a minority of small minded twats who think their opinion matters. Read 'Speak Your Branes' instead.
abigaildamms (Abigail Damms) Tue, 05 Jan 2010 17:44:59 -0000
@paulkidder Don't worry sweet, HYS is a minority of small minded twats who think their opinion matters. Read 'Speak Your Branes' instead.
Is contemplating a Branes & Noble nook or a Amazon Kindle or should I wait for the Apple Tablet.
manav_arya (Manav) Tue, 05 Jan 2010 17:13:51 -0000
Is contemplating a Branes & Noble nook or a Amazon Kindle or should I wait for the Apple Tablet.
Wondered why spEak You're bRanes were posting duplicates to their RSS feed. Turns out I was subscribed twice. D'Oh.
craiga (Craig Andrews) Tue, 05 Jan 2010 16:47:14 -0000
Wondered why spEak You're bRanes were posting duplicates to their RSS feed. Turns out I was subscribed twice. D'Oh.
@wisdomowhiskers lets play by ear till I find out what Pastor Branes may need from me...
DavidLermy (David Lermy ) Tue, 05 Jan 2010 05:49:09 -0000
@wisdomowhiskers lets play by ear till I find out what Pastor Branes may need from me...
@rabidbee - Brian is my branes :)
Swishrelic (Chris Lewis) Sun, 03 Jan 2010 23:21:14 -0000
@rabidbee - Brian is my branes :)
2001: A Spacetime Odyssey - A lecture on colliding branes and the origin of the hot big bang by Paul Steinhardt
A Cyclic Universe - An article from Sky Telescope on the ekpyrotic universe model.
Meta Description: [ Maybe the Big Bang wasn't the beginning, but only the latest in an endless cycle of destructions and rebirths. ]
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A Recycled Universe - A scientific american article on the brane-world models of the Universe
Meta Description: [ Science and Technology at Scientific American.com: A Recycled Universe -- Science and Technology from Scientific American: daily science news and technology news, science trivia, science experts, science newsletters, science shop, science books and more ]
A Workshop on the Ekpyrotic Universe - The purpose of this workshop will be to offer the opportunity to discuss issues such as the connection with M-theory and cosmological perturbations in the ekpyrotic scenario.
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An Invisible Dimension - Extra spatial dimensions--beyond the three we know--might exist, while being invisible to most experiments.
Meta Description: [ Extra spatial dimensions--beyond the three we know--might exist, while being invisible to most experiments. ]
Brane Cosmology - The aim of these lectures is to give a brief introduction to brane cosmology
Brane-Storm Challenges Big Bang Theory - A popular physics explanation of the ekpyrotic model of universe creation
Meta Description: [ Faster than you can say ]
Branes for Relativists - The purpose of this manuscript is to provide a pedagogical account of the brane technology so that the relativists can use branes in their study.
Cosmology in a Brane Universe - This lecture presents the cosmological models with extra dimensions that have been recently elaborated, which assume that ordinary matter is confined on a surface, called brane, embedded in a higher dimensional spacetime.
Searching for Extra Dimensions - A one page article on the search for evidence of higher dimensions.
The Cyclic Universe - An informal introduction to the models of the universe which use higher dimension branes.
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