Titlebook: Handbook of Quantum Gravity; Cosimo Bambi,Leonardo Modesto,Ilya Shapiro Living reference work 20230th edition String theories.Loop quantu

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Effective Field Theory and Applications,rt action. This pragmatic route to low-energy quantum effects in gravity critically underpins miscellaneous investigations of phenomenological and quantum extensions of general relativity. We discuss how it allows quantum field theory to be a theoretical laboratory for testing Einstein’s theory of g

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arbovirus

Aromatic

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Gauge Invariant Renormalizability of Quantum Gravity, models are covariant local expressions. This fundamental statement plays a central role in QG, and, therefore, it is important to prove it for the widest possible range of the QG theories. Using the Batalin-Vilkovisky technique and the background field method, we elaborate the proof of gauge invari

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One-Loop Divergences in Higher-Derivative Gravity, arbitrary backgrounds, introduce a higher-derivative gauge fixing, and show that higher-derivative gauge fixing must have ghosts in addition to those naively expected. We give general formulae for the one-loop divergences in such theories and give explicit results for theories with quadratic curvat

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