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Conservation laws of scaling-invariant field equations

Stephen C Anco

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A simple conservation law formula for field equations with a scaling symmetry is presented. The formula uses adjoint-symmetries of the given field equation and directly generates all local conservation laws for any conserved quantities having non-zero scaling weight. Applications to several soliton equations, fluid flow and nonlinear wave equations, Yang–Mills equations and the Einstein gravitational field equations are considered.


PACS

03.50.-z Classical field theories

05.45.Yv Solitons

04.20.-q Classical general relativity

MSC

70S15 Yang-Mills and other gauge theories

70S10 Symmetries and conservation laws

35Q51 Solitons (See also 37K40)

83D05 Relativistic gravitational theories other than Einstein's, including asymmetric field theories

Subjects

Gravitation and cosmology

Statistical physics and nonlinear systems

Particle physics and field theory

Dates

Issue 32 (15 August 2003)

Received 28 March 2003, in final form 26 June 2003

Published 29 July 2003



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