article published Carl Peter Goodrich author EB352CD2-F68A-11E9-89C5-A432E66974250000-0002-1307-5074 Andrea J. Liu author Sidney R. Nagel author In their Letter, Schreck, Bertrand, O'Hern and Shattuck [Phys. Rev. Lett. 107, 078301 (2011)] study nonlinearities in jammed particulate systems that arise when contacts are altered. They conclude that there is "no harmonic regime in the large system limit for all compressions" and "at jamming onset for any system size." Their argument rests on the claim that for finite-range repulsive potentials, of the form used in studies of jamming, the breaking or forming of a single contact is sufficient to destroy the linear regime. We dispute these conclusions and argue that linear response is both justified and essential for understanding the nature of the jammed solid. American Physical Society2014 eng 0031-9007 1079-7114 1306.128510.1103/physrevlett.112.049801 1124 yes Goodrich CP, Liu AJ, Nagel SR. Comment on “Repulsive contact interactions make jammed particulate systems inherently nonharmonic.” <i>Physical Review Letters</i>. 2014;112(4). doi:<a href="https://doi.org/10.1103/physrevlett.112.049801">10.1103/physrevlett.112.049801</a> Goodrich, C. P., Liu, A. J., &#38; Nagel, S. R. (2014). Comment on “Repulsive contact interactions make jammed particulate systems inherently nonharmonic.” <i>Physical Review Letters</i>. American Physical Society. <a href="https://doi.org/10.1103/physrevlett.112.049801">https://doi.org/10.1103/physrevlett.112.049801</a> C. P. Goodrich, A. J. Liu, and S. R. Nagel, “Comment on ‘Repulsive contact interactions make jammed particulate systems inherently nonharmonic,’” <i>Physical Review Letters</i>, vol. 112, no. 4. American Physical Society, 2014. Goodrich, Carl Peter, et al. “Comment on ‘Repulsive Contact Interactions Make Jammed Particulate Systems Inherently Nonharmonic.’” <i>Physical Review Letters</i>, vol. 112, no. 4, 049801, American Physical Society, 2014, doi:<a href="https://doi.org/10.1103/physrevlett.112.049801">10.1103/physrevlett.112.049801</a>. Goodrich CP, Liu AJ, Nagel SR. 2014. Comment on “Repulsive contact interactions make jammed particulate systems inherently nonharmonic”. Physical Review Letters. 112(4), 049801. C.P. Goodrich, A.J. Liu, S.R. Nagel, Physical Review Letters 112 (2014). Goodrich, Carl Peter, Andrea J. Liu, and Sidney R. Nagel. “Comment on ‘Repulsive Contact Interactions Make Jammed Particulate Systems Inherently Nonharmonic.’” <i>Physical Review Letters</i>. American Physical Society, 2014. <a href="https://doi.org/10.1103/physrevlett.112.049801">https://doi.org/10.1103/physrevlett.112.049801</a>. 77712020-04-30T11:42:39Z2021-01-12T08:15:26Z