单面Chetaev型非完整系统的共形不变性、Noether对称性和Lie对称性
Conformal invariance, Noether symmetry and Lie symmetry for systems with unilateral Chetaev non-holonomic constraints
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摘要: 研究单面Chetaev型非完整系统在无限小变换下的共形不变性及其与Noether对称性和Lie对称性的关系.首先,给出了单面Chetaev型非完整系统的共形不变性的定义;其次,研究了系统的共形不变性与Noether对称性之间的关系;最后,研究了系统的共形不变性与Lie对称性之间的关系,得到了共形不变性同时是Lie对称性导致的Hojman守恒量.最后分别举例说明了结果的应用.Abstract: The conformal invariance of a system with unilateral Chetaev non-holonomic is studied,and its definition is given.The relation between the conformal invariance and the Noether symmetry is discussed.Finally,the relation between the conformal invariance and the Lie symmetry is discussed,and the Hojman conserved quantity due to the conformal invariance of the systems is obtained.In the paper,an example is given to illustrate the application of the results.
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