An elementary derivation of the Montgomery phase formula for the Euler top
José Natário - Centro de Análise Matemática, Geometria e Sistemas Dinâmicos, Departamento de Matemática, Instituto Superior Técnico, 1049-001 Lisboa, Portugal (email)
Abstract: We give an elementary derivation of the Montgomery phase formula for the motion of an Euler top, using only basic facts about the Euler equation and parallel transport on the $2$-sphere (whose holonomy is seen to be responsible for the geometric phase). We also give an approximate geometric interpretation of the geometric phase for motions starting close to an unstable equilibrium point.
Keywords: Euler top, geometric phase.
Received: September 2009; Revised: February 2010; Published: April 2010.
2011 Impact Factor.812