[1] Ctr. for Nonlin. and Complex Systems, Department of Physics, Duke University, Durham, NC 27708, United States
[2] Mathematical Modeling Division, Los Alamos National Laboratory, Los Alamos, NM 87545, United States
[3] Department of Solar Energy, BIDR, Ben-Gurion University, Sede Boker Campus 84990, Israel
[4] Physics Department, Ben-Gurion University, Beer Sheva 84105, Israel
[5] Center for Nonlinear Dynamics, Department of Physics, University of Texas at Austin, Austin, TX 78712, United States