Brane

Branes are objects in M-theory and its offshoot, brane cosmology.

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In M-theory, p-branes (the name is derived from membrane) are objects of spatial dimensionality p (for example, a string is a 1-brane). In brane cosmology, the term "brane" is used to refer to objects similar to our four-dimensional universe, which move in a higher-dimensional "bulk".

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See also: P-branes, D-branes

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M-theory: M-theory is a solution proposed for the unknown theory of everything which would combine all five superstring theories and 11-dimensional supergravity together. According to Dr. Edward Witten, who proposed the theory, mathematical tools which have yet to be invented are needed in order to fully unde...

Brane cosmology: Brane cosmology is a protoscience motivated by, but not rigorously derived from, superstring theory and M-theory. The idea is to solve problems in cosmology using speculative particle physics theories and in turn use cosmological observations to motivate ideas in string theory....

Membrane: A membrane is a thin, typically planar structure or material that separates two environments. Because it sits between environments or phases and has a finite volume, it can be referred to as an interphase rather than an interface. Membranes selectively control mass transport between the phases or e...