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Two Diverging Length Scales in the Structure of Jammed Packings

Journal Article · · Physical Review Letters
 [1];  [2];  [3]
  1. Univ. of Pennsylvania, Philadelphia, PA (United States); Univ. of Chicago, IL (United States); University of Pennsylvania
  2. Univ. of Pennsylvania, Philadelphia, PA (United States)
  3. Univ. of Chicago, IL (United States)
Here, at densities higher than the jamming transition for athermal, frictionless repulsive spheres we find two distinct length scales, both of which diverge as a power law as the transition is approached. The first, ξZ , is associated with the two-point correlation function for the number of contacts on two particles as a function of the particle separation. Additionally, the second, ξf , is associated with contact-number fluctuations in subsystems of different sizes. On scales below ξf , the fluctuations are highly suppressed, similar to the phenomenon of hyperuniformity usually associated with density fluctuations. The exponents for the divergence of ξZ and ξf are different and appear to be different in two and three dimensions.
Research Organization:
Univ. of Chicago, IL (United States); Univ. of Pennsylvania, Philadelphia, PA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
FG02-03ER46088; FG02-05ER46199
OSTI ID:
1596600
Alternate ID(s):
OSTI ID: 1541359
OSTI ID: 1856742
OSTI ID: 1469439
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 11 Vol. 121; ISSN 0031-9007; ISSN PRLTAO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (6)

Mean field theory of jamming of nonspherical particles journal July 2019
Cluster approach to phase transitions from fluid to amorphous solids: gels, glasses and granular materials journal August 2019
Hyperuniformity on spherical surfaces journal August 2019
Marginally stable phases in mean-field structural glasses journal January 2019
Marginally stable phases in mean-field structural glasses text January 2018
Hyperuniformity on spherical surfaces text January 2018