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Lie and Noether point Symmetries for a Class of Nonautonomous Dynamical Systems (1708.00619v1)
Published 2 Aug 2017 in math.CA, gr-qc, math-ph, and math.MP
Abstract: We prove two general theorems which determine the Lie and the Noether point symmetries for the equations of motion of a dynamical system which moves in a general Riemannian space under the action of a time dependent potential $W(t,x)=\omega(t)V(x)$. We apply the theorems to the case of a time dependent central potential and the harmonic oscillator and determine all Lie and Noether point symmetries. Finally we prove that these theorems also apply to the case of a dynamical system with linear dumping and study two examples.