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The Theorem of Ostrogradsky
Published 7 Jun 2015 in hep-th | (1506.02210v2)
Abstract: Ostrogradsky's construction of a Hamiltonian formalism for nondegenerate higher derivative Lagrangians is reviewed. The resulting instability imposes by far the most powerful restriction on fundamental, interacting, continuum Lagrangian field theories. A discussion is given of the problems raised by attempts to evade this restriction.
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