Routh reduction for first-order Lagrangian field theories
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DOI: 10.1007/s11005-018-1140-6
Abstract: We present a reduction theory for first-order Lagrangian field theories which takes into account the conservation of momenta. The relation between the solutions of the original problem with a prescribed value of the momentum and… read more here.
Keywords: reduction; first order; field theories; lagrangian field ... See more keywords
First-order Lagrangian and Hamiltonian of Lovelock gravity
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DOI: 10.1088/1361-6382/abf415
Abstract: Based on the insight gained by many authors over the years on the structure of the Einstein–Hilbert, Gauss–Bonnet and Lovelock gravity Lagrangians, we show how to derive-in an elementary fashion-their first-order, generalized ‘Arnowitt–Deser–Misner’ Lagrangian and… read more here.
Keywords: lovelock; order lagrangian; first order; lovelock gravity ... See more keywords
An n-th order Lagrangian forward model for large-scale structure
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DOI: 10.1088/1475-7516/2021/04/033
Abstract: A forward model of matter and biased tracers at arbitrary order in Lagrangian perturbation theory (LPT) is presented. The forward model contains the complete LPT displacement field at any given order in perturbations, as well… read more here.
Keywords: model large; order; lagrangian forward; forward model ... See more keywords