Effective Field Theory for Quantum Gravity from ... - Relativity Group

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OutlineIntroduction: motivation, goal of talkSymmetry Trading and Symmetry Doubling: symmetry trading,Shape Dynamics and General Relativity, symmetry doubling andDoubly General RelativityDoubly General Relativity: effective field theory, revised gravity theoryspaceConsequences: new construction principle ⇒ possible observationalconsequences, bulk/bulk duality, renormalizationSummaryT. Koslowski (PI) Quantum Shape Dynamics April 10th, 2012 2 / 23
MotivationGeneral Relativity is not renormalizable:perturbation expansion of Einstein-Hilbert action, unitarity problem withhigher derivative gravity⇒ problem is finding a different universality classImportance of Symmetries:RG flow stays on (evolving) symm. surfaceencoded as BRST-invariance of path integral⇒ Slavnov-Taylor identities for eff. actionuniversality classes are often explained by symmetriesPossibility: Hidden SymmetryFP may not be detected without adapting search to symmetry⇒ important heuristic for finding new universality classT. Koslowski (PI) Quantum Shape Dynamics April 10th, 2012 3 / 23
Page 4 and 5: Main Message“Doubly General Relat
Page 6 and 7: Symmetry Trading MechanismT. Koslow
Page 8 and 9: Relation of Dirac ObservablesInters
Page 10 and 11: DOUBLY GENERAL RELATIVITYsymmetry d
Page 12 and 13: Construction of Doubly General Rela
Page 14 and 15: Construction of Doubly General Rela
Page 16 and 17: Renormalization Group and Effective
Page 18 and 19: FURTHER DIRECTIONSdualities, experi
Page 20 and 21: Bulk/bulk dualityUsual Shape Dynami
Page 22 and 23: Conclusions1 Symmetry trading is ge

Effective Field Theory for Quantum Gravity from ... - Relativity Group

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