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Wheeler-DeWitt equation and Bondi-Metzner-Sachs (BMS) symmetry

Published 2 Jun 2025 in hep-th and gr-qc | (2506.02240v1)

Abstract: The Hamiltonian formulation of the BMS symmetry on spacelike hypersurfaces enables one to define its action on solutions of the Wheeler-DeWitt equation. Using the BRST reformulation of the theory, we provide operator expressions for the matrix elements of the BMS operators between Wheeler-DeWitt states. To that end, we construct the BRST-invariant extensions of the BMS generators, which form a BRST-extension of the BMS algebra.

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