4 papers
Weird scaling for 2-D avalanches: Curing the faceting, and scaling in the lower critical dimension
L. X. Hayden, Archishman Raju, James P. Sethna
The non-equilibrium random-field Ising model is well studied, yet there are outstanding questions. In two dimensions, power law scaling approaches fail and the critical disorder is…
Morphology of renormalization-group flow for the de Almeida-Thouless-Gardner universality class
Patrick Charbonneau, Yi Hu, Archishman Raju +2
A replica-symmetry-breaking phase transition is predicted in a host of disordered media. The criticality of the transition has, however, long been questioned below its upper critic…
Reexamining the renormalization group: Period doubling onset of chaos
Archishman Raju, James P Sethna
We explore fundamental questions about the renormalization group through a detailed re-examination of Feigenbaum's period doubling route to chaos. In the space of one-humped maps,…
Finding stability domains and escape rates in kicked Hamiltonians
Archishman Raju, Sayan Choudhury, David L. Rubin +2
We use an effective Hamiltonian to characterize particle dynamics and find escape rates in a periodically kicked Hamiltonian. We study a model of particles in storage rings that is…