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## Sheared foam as a supercooled liquid?

S. A. Langer et ai: SHEARED FOAM AS A SUPERCOOLED LIQUID? 7 3

very different dependence of η on Γ . There is also a difference between the results for 224 and 621 bubbles. It is small compared to the error bars but there is a system atic trend towards more Arrhenius behavior with increasing system size. Thus one might wonder if the behavior is Arrhenius for infinite system s. We argue that it must still be super-Arrhenius in that lim it, because the viscosity diverges as 7 -> 0, but Γ approaches J į , a nonzero constant. We note, however, that even if the behavior were Arrhenius, it would still be nontrivial and remarkable.