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Three-dimensional asymptotically flat Einstein-Maxwell theory
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DOI：10.1088/0264-9381/32/24/245001.png)
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Abstract
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Three-dimensional Einstein-Maxwell theory with non-trivial asymptotics at null infinity is solved. The symmetry algebra is a Virasoro-Kac-Moody type algebra that extends the bms3 algebra of the purely gravitational case. Solution space involves logarithms and provides a tractable example of a polyhomogeneous solution space. The associated surface charges are non-integrable and non-conserved due to the presence of electromagnetic news. As in the four-dimensional purely gravitational case, their algebra involves a field-dependent central charge.
Keywords:
Einstein-Maxwell theory
lower dimensional models
asymptotic structure
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