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Author Topic: P-branes, or what was before the Big Bang  (Read 1765 times)

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Offline twofires

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P-branes, or what was before the Big Bang
« on: January 21, 2007, 09:19:45 PM »
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 spatial 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.


With the development of M-theory, an extra dimension appeared and the fundamental string of string theory became a 2-dimensional membrane called an M2-brane (or supermembrane). Its magnetical dual is an M5-brane. The various branes of string theory are thought to be related to these higher dimensional M-branes wrapped on various cycles.


the short of it: our universe exists as the intersection of a couple branes wafting around like silk
Who was it wrote; Give any one species too much rope and they'll fuck it up?
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Offline thunter34

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Re: P-branes, or what was before the Big Bang
« Reply #1 on: January 21, 2007, 09:33:10 PM »
This is all kinda flying over my head at the moment.

I feel like a P-brane.
AIDS isn't for sissies.

Offline Val

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Re: P-branes, or what was before the Big Bang
« Reply #2 on: January 22, 2007, 01:21:03 AM »
Funny you started this topic!  I was watching this video that the BBC made about the String Theory which, I suppose, has something to do with the Branes!


Arthus Bertrand
Ali Mahdavi
Richard de Chazal
Daniel Nassoy
The word comes from the Greek words φως phos ("light"), and γραφίς graphis ("stylus", "paintbrush") or γραφή graphê, together meaning "drawing with light" or "representation by means of lines".

Offline Miss Philicia

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Re: P-branes, or what was before the Big Bang
« Reply #3 on: January 22, 2007, 01:36:56 AM »
"I’ve slept with enough men to know that I’m not gay"


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