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Nonconservative Lagrangian mechanics: a generalized function approach

David W Dreisigmeyer and Peter M Young

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We reexamine the problem of having nonconservative equations of motion arise from the use of a variational principle. In particular, a formalism is developed that allows the inclusion of fractional derivatives. This is done within the Lagrangian framework by treating the action as a Volterra series. It is then possible to derive two equations of motion, one of these is an advanced equation and the other is retarded.


PACS

02.30.Rz Integral equations

02.30.Xx Calculus of variations

45.20.Jj Lagrangian and Hamiltonian mechanics

MSC

45D05 Volterra integral equations (See also 34A12)

70H08 Nearly integrable Hamiltonian systems, KAM theory

65K10 Optimization and variational techniques (See also 49Mxx, 93B40)

Subjects

Mathematical physics

Dates

Issue 30 (1 August 2003)

Received 29 April 2003, in final form 17 June 2003

Published 16 July 2003



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