Spontaneous Generation of Angular Momentum in Holographic Theories
  The Schwarzschild black two-brane in four-dimensional anti-de Sitter space is dual to a finite temperature state in three-dimensional conformal field theory. We show that the solution acquires a nonzero angular momentum density when a gravitational Chern-Simons coupling is turned on in the bulk, even though the solution is not modified. A similar phenomenon is found for the Reissner-Nordstrom black two-brane with axionic coupling to the gauge field. We discuss interpretation of this phenomenon from the point of view of the boundary three-dimensional conformal field theory. 
Hong Liu, Hirosi Ooguri, Bogdan Stoica and Nicolas Yunes
hep-th cond-mat.str-el gr-qc