Phys. Rev. Lett. 52, 1488–1491 (1984)Topological Mapping Properties of Collisionless Potential and Vortex MotionReceived 24 May 1983; published in the issue dated 23 April 1984 The topological properties of patterns which arise in free motion of matter under random but smooth initial velocity distributions are considered. Potential and solenoidal motions are discussed. The cosmological role of this phenomenon is also briefly discussed. © 1984 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.52.1488
DOI:
10.1103/PhysRevLett.52.1488
PACS:
47.10.+g, 47.30.+s, 98.80.-k
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