Geometry and Thermodynamics of Black Holes in Magnetic Fields ...
Geometry and Thermodynamics of Black Holes in Magnetic Fields ...
Geometry and Thermodynamics of Black Holes in Magnetic Fields ...
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Further SU(2, 1) Transformations• Amongst the other possible transformations with<strong>in</strong> the SU(2, 1)symmetry group are electrifications (add<strong>in</strong>g an external electricfield):U =⎛(B+i E)⎜⎝(B 2 +E 2 )41 0 0⎟⎠ .(B−i√E)1 2√21 0• Electric/magnetic duality transformations, which <strong>in</strong> four dimensionstake the formF −→ F ′ = F cos α + ∗F s<strong>in</strong> α ,This is implemented <strong>in</strong> 3 dimensions by the SU(2, 1) matrix⎛e − i ⎞3 α 0 0U =⎜ 0 e 2i3 α 0.⎝0 0 e − 3 i ⎟α ⎠⎞