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 Abstract: Recently extended precise numerical methods and droplet scaling arguments allow for a coherent picture of the glassy states of two-dimensional Ising spin glasses to be assembled. The length scale at which entropy becomes important and produces "chaos", the extreme sensitivity of the state to temperature, is found to depend on the type of randomness. For the $\pm J$ model this length scale dominates the low-temperature specific heat. Although there is a type of universality, some critical exponents do depend on the distribution of disorder. Publication Date: 2011 Citation: Thomas, Creighton K, Huse, David A, Middleton, A Alan. (2011). Chaos and universality in two-dimensional Ising spin glasses. Phys. Rev. Lett., 107 (047203-1 - 047203-4). doi:10.1103/PhysRevLett.107.047203 DOI: doi:10.1103/PhysRevLett.107.047203 Pages: 047203-1 - 047203-4 Type of Material: Journal Article Journal/Proceeding Title: Phys. Rev. Lett. Version: Author's manuscript