  The fluctuations around the D0-brane near-horizon geometry are described by
two-dimensional SO(9) gauged maximal supergravity. We work out the U(1)^4
truncation of this theory whose scalar sector consists of five dilaton and four
axion fields. We construct the full non-linear Kaluza-Klein ansatz for the
embedding of the dilaton sector into type IIA supergravity. This yields a
consistent truncation around a geometry which is the warped product of a
two-dimensional domain wall and the sphere S^8. As an application, we consider
the solutions corresponding to rotating D0-branes which in the near-horizon
limit approach AdS2xM8 geometries, and discuss their thermodynamical
properties. More generally, we study the appearance of such solutions in the
presence of non-vanishing axion fields.

High Energy Physics - Theory