Erratum: “Diffusion amid random overlapping obstacles: Similarities, invariants, approximations’’ [J. Chem. Phys. 134, 154104 (2011)]

There is a typographical error in the upper line of the formula for M in the article¹ (page 3, top of left column). The correct formula is

$$M=\left\{\begin{array}{c}{\displaystyle \frac{(\varphi -(1∕2\left)\sin 2\varphi \right)}{{\sin }^3\varphi }\cos \varphi ,\mathrm{for}\chi =\cos \varphi <1}\\ {\displaystyle \frac{1}{{\sin }^2\varphi }-\frac{1}{2}\frac{{\cos }^2\varphi }{{\sin }^3\varphi }\ln \left({\displaystyle \frac{1+\sin \varphi }{1-\sin \varphi }}\right),\mathrm{for}\chi =1∕\cos \varphi >1.}\end{array}\right.$$

The detected error does not affect any results of the study. We thank Dr. Greg Huber of the University of Connecticut Health Center for pointing out the error to us.