Published in Journal of Computational Chemistry 2009, 30, 1649–1653; DOI: 10.1002/jcc.21311

The authors have notified us of errors in the article. The corrected text and equation are shown below. We apologize for any inconvenience this may have caused.

Equation 3 should be written as

  • display math

Reference 2 should read, “E, W. N.; Ren, W. Q.; Vanden-Eijnden, E. Phys. Rev. B 2002, 66, 052301”; and Reference 8 should read, ”E, W. N.; Ren. W. Q.; Vanden-Eijnden, E. J. Phys. Chem. 2005, 109, 6688–6693”.