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Generalized Galileons: All scalar models whose curved background extensions maintain second-order field equations and stress tensors

Abstract : We extend to curved backgrounds all flat-space scalar field models that obey purely second-order equations, while maintaining their second-order dependence on both field and metric. This extension simultaneously restores to second order the, originally higher derivative, stress tensors as well. The process is transparent and uniform for all dimensions.
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https://hal.archives-ouvertes.fr/hal-03646254
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Submitted on : Friday, August 12, 2022 - 7:00:34 AM
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C. Deffayet, S. Deser, G. Esposito-Farèse. Generalized Galileons: All scalar models whose curved background extensions maintain second-order field equations and stress tensors. Physical Review D, 2009, 80, ⟨10.1103/PhysRevD.80.064015⟩. ⟨hal-03646254⟩

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