: Astronomie: domain wall

theoretical physics aspects > unified theory > grand unification theory > topological defect > domain wall

domain wall

A domain wall is a type of topological soliton that occurs whenever a discrete symmetry is spontaneously broken. Domain walls are also sometimes called kinks in analogy with closely related kink solution of the sine-Gordon model or models with polynomial potentials. Unstable domain walls can also appear if spontaneously broken discrete symmetry is approximate and there is a false vacuum. A domain (hyper volume) is extended in three spatial dimensions and one time dimension. A domain wall is the boundary between two neighboring domains. Thus a domain wall is extended in two spatial dimensions and one time dimension. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Domain_wall)

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