Perdew et al. Reply:

John P. Perdew¹, Adrienn Ruzsinszky¹, Gábor I. Csonka², Oleg A. Vydrov³, Gustavo E. Scuseria⁴, Lucian A. Constantin¹, Xiaolan Zhou¹, and Kieron Burke^5
1Department of Physics Tulane University New Orleans, Louisiana 70118, USA
²Department of Chemistry Budapest University of Technology and Economics H-1521 Budapest, Hungary
³Department of Chemistry Massachusetts Institute of Technology Cambridge, Massachusetts 02139, USA
⁴Department of Chemistry Rice University Houston, Texas 77005, USA
⁵Department of Chemistry University of California Irvine, California 92697, USA

Original Article: John P. Perdew, Adrienn Ruzsinszky, Gábor I. Csonka, Oleg A. Vydrov, Gustavo E. Scuseria, Lucian A. Constantin, Xiaolan Zhou, and Kieron Burke, Restoring the Density-Gradient Expansion for Exchange in Solids and Surfaces, Phys. Rev. Lett. 100, 136406 (2008).

Original Article: Ann E. Mattsson, Rickard Armiento, and Thomas R. Mattsson, Comment on “Restoring the Density-Gradient Expansion for Exchange in Solids and Surfaces”, Phys. Rev. Lett. 101, 239701 (2008).