Duality and the Vacuum


We examine the issue of duality both in electrodynamics and in Kalb–Ramond— scalar axion systems. InD spacetime dimensions the dual abelian theories of p−1and D− p− 1-form potentials have vacua classified by the dimensions of the cohomology spaces Hp−1( (D−1)M) orHD−p−1( (D−1)M) respectively. The vacua are characterized by topological charges which are… (More)


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