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Using the generally covariant magnetofluid formalism for a hot plasma, a newspacetime curvature driven mechanism for generating seed vorticity/magneticfield is presented. The ``battery'' owes its origin to the interaction betweengravity and the inhomogeneous plasma thermodynamics. The general relativisticdrive is evaluated for two simple cases: seed formation in a simplified modelof a hot plasma accreting in stable orbits around a Schwarzschild black hole,and for particles in free fall near the horizon. Some astrophysicalapplications are suggested.

Generating vorticity and magnetic fields in plasmas in general relativity: spacetime curvature drive