Editing Compactification (physics) (section)

==Flux compactification==

A '''flux compactification''' is a particular way to deal with additional dimensions required by string theory.

It assumes that the shape of the internal [[manifold]] is a Calabi–Yau manifold or  [[Generalized complex structure|generalized Calabi–Yau manifold]] which is equipped with non-zero values of fluxes, i.e. [[differential form]]s, that generalize the concept of an [[electromagnetic field]] (see [[p-form electrodynamics]]).

The hypothetical concept of the [[String theory landscape|anthropic landscape]] in string theory follows from a large number of possibilities in which the integers that characterize the fluxes can be chosen without violating rules of string theory. The flux compactifications can be described as [[F-theory]] vacua or [[Type II string theory|type IIB string theory]] vacua with or without [[D-brane]]s.