Canonical Realization of BMS Symmetry. Quadratic Casimir
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✦ hep-th
keywords
canonicalcasimirquadraticrealizationscalarsymmetrywillcite
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We study the canonical realization of BMS symmetry for a massive scalar field introduced in reference \cite{LM}. We will construct an invariant scalar product for the generalized momenta. As a consequence we will introduce a quadratic Casimir with the supertranslations.
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