Condensed Matter
In condensed matter physics, the theory of homotopy groups provides a natural setting for description and classification of defects in ordered systems. Topological methods have been used in several problems of condensed matter theory. Poénaru and Toulouse used topological methods to obtain a condition for line (string) defects in liquid crystals can cross each other without entanglement. It was a non-trivial application of topology that first led to the discovery of peculiar hydrodynamic behavior in the A-phase of superfluid Helium-3.
Read more about this topic: Topological Defect
Famous quotes containing the words condensed and/or matter:
“If you read only the best, you will have no need of reading the other books, because the latter are nothing but a rehash of the best and the oldest. To read Shakespeare, Plato, Dante, Milton, Spenser, Chaucer, and their compeers in prose, is to read in condensed form what all others have diluted.”
—Anna C. Brackett (1836–1911)
“As to the rout that is made about people who are ruined by extravagance, it is no matter to the nation that some individuals suffer. When so much general productive exertion is the consequence of luxury, the nation does not care though there are debtors in gaol; nay, they would not care though their creditors were there too.”
—Samuel Johnson (1709–1784)