My research has been concentrated on the study of geometric evolution equations and their applications to differential geometry. I am especially interested in the Ricci flow, its singularities, long time existence and convergence.

Isoperimetric estimate for the Ricci flow on S² × S¹, Communications in Analysis and Geometry 13 no. 4 (2005), 727–739.

Eigenvalues of (–\triangle + R/2) on manifolds with nonnegative curvature operator, Mathematische Annalen 337 no. 2 (2007), 435–441.

Cross curvature flow on locally homogenous three-manifolds (I) (with Yilong Ni and Laurent Saloff-Coste), Pacific J. Math. 236 no. 2 (2008), 263–281.

Differential Harnack estimates for backward heat equations with potentials under the Ricci flow, J. Funct. Anal. 255 no. 4 (2008), 1024–1038.