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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@_marks branes? or brains? if the former, props...
juvation (Jason Proctor) Tue, 27 Oct 2009 22:46:21 -0000
@_marks branes? or brains? if the former, props...
is listening to @thiscitymusic and thinking about how the cosmological constant is related to the visible and bulk branes
samcroasdale (Sam Croasdale) Tue, 27 Oct 2009 19:46:16 -0000
is listening to @thiscitymusic and thinking about how the cosmological constant is related to the visible and bulk branes
今日借りたもの：BAD BRANESベスト、トータスのファースト、コールドプレイのviva～、パーラメントのベスト、あとマイスティースの聴いてなかったアルバムとポラリス
qdubnobdondubp (鬼畜くん) Tue, 27 Oct 2009 16:50:13 -0000
今日借りたもの：BAD BRANESベスト、トータスのファースト、コールドプレイのviva～、パーラメントのベスト、あとマイスティースの聴いてなかったアルバムとポラリス
beagleboard.org! might be the branes of my secret weapon.
_marks (adam) Tue, 27 Oct 2009 15:49:38 -0000
beagleboard.org! might be the branes of my secret weapon.
What do zombie cosmologists want? Branes.....
jef_poskanzer (Jef Poskanzer) Mon, 26 Oct 2009 19:44:49 -0000
What do zombie cosmologists want? Branes.....
@CaptainBronco must eat branes!
mmDonuts (mmDonuts) Mon, 26 Oct 2009 18:49:43 -0000
@CaptainBronco must eat branes!

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