Two Diverging Length Scales in the Structure of Jammed Packings
Journal Article
·
· Physical Review Letters
- Univ. of Pennsylvania, Philadelphia, PA (United States); Univ. of Chicago, IL (United States); University of Pennsylvania
- Univ. of Pennsylvania, Philadelphia, PA (United States)
- 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, , 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, , is associated with contact-number fluctuations in subsystems of different sizes. On scales below , the fluctuations are highly suppressed, similar to the phenomenon of hyperuniformity usually associated with density fluctuations. The exponents for the divergence of and 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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