Varying without varying: reparameterizations, diffeomorphisms, general covariance, Lie derivatives, and all that

Kothawala, D

Kothawala, D (corresponding author), Indian Inst Technol Madras, Dept Phys, Chennai 600036, Tamil Nadu, India.

EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (5):

Abstract

The standard way of deriving Euler-Lagrange (EL) equations given a point particle action is to vary the trajectory and set the first variation of the ......

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