A domain wall is a type of topological soliton that occurs whenever a discrete symmetry is spontaneously broken. It can take on different meanings depending on the context:
- Domain wall (magnetism), an interface separating magnetic domains
- Domain wall (optics), for domain walls in optics
- Domain wall (string theory), a theoretical 2-dimensional singularity
Famous quotes containing the words domain and/or wall:
“While you are divided from us by geographical lines, which are imaginary, and by a language which is not the same, you have not come to an alien people or land. In the realm of the heart, in the domain of the mind, there are no geographical lines dividing the nations.”
—Anna Howard Shaw (1847–1919)
“When a wall is collapsing, everybody gives it a push.”
—Chinese proverb.