¥Threshold: some particles feel forces
¥All N forced* particles must have balanced
forces.
–d N constraints on contact forces in d
dimensions
–Requires** at least
d N contacts.
¥Adiabatic jamming adds contacts one by one: stops when forces balance
¥É expect marginally jammed state to have just d N contacts: isostatic
–i.e. minimal number of contacts to fix
particle positions.
¥Observed in simulation