excess contacts
1
Further implications of deformed free modes
Why shear modulus  µ number of excess contacts
Why compression (f - fc) µ (excess contacts)2
NORMAL
SOLID
JAMMED
SOLID
acoustic
modes
deformed free modes
:
:
::
shown
How anomalous modes disappear under compression
See review by Liu et al http://arxiv.org/abs/1006.2365