Here's a summary of my interests in quantum phase transitions

1.  Effects of disorder on QPT, both critical phenomena and 
Griffiths-McCoy singularities. Numerical simulations to investigate these
issues.

2.  Discrepancy between experiments and Hertz theory for QPT in clean 
metallic antiferromagnets. Is there a strong coupling fixed point in 
addition to the Gaussian fixed point found by Hertz?