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Results tagged with perturbation-theory
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user 206290
Perturbation theory refers to methods for understanding physical systems by treating them as small modifications to exactly solvable systems.
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Perturbative expansion of the metric and its inverse
For example, in gravitational wave theory to construct the Pseudo-energy momentum tensor a la Issacson tensor you actually need a perturbed generic background to second order. So let be $g_{ab}(\lambd …
