Abstract

Motivated by black hole physics in N = 2,D = 4 supergravity, we study
the geometry of quaternionic-K¨ahler manifolds Mobtained by the c-map construction
from projective special Kähler manifolds Ms. Improving on earlier treatments, we
compute the Käahler potentials on the twistor space Z and Swann space S in the
complex coordinates adapted to
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