Xf. Chen et al., LINEAR-STABILITY OF A SOLID BALL IN AN UNDERCOOLED LIQUID, Journal of mathematical analysis and applications, 193(3), 1995, pp. 859-888
We study the linear stability of a solid ball in equilibrium with its
undercooled liquid in two space dimensions. We show that the unstable
manifold is one dimensional and consists of a special radially symmetr
ic perturbation of the shape (and the temperature), whereas all the ot
her perturbations orthogonal to the unstable perturbation are stable.
(C) 1995 Academic Press, Inc.