Nonequilibrium electron relaxation in graphene

Nonequilibrium plasmon emission drives ultrafast carrier relaxation dynamics in photoexcited graphene

J. M. Hamm,1,* A. F. Page,1 J. Bravo-Abad,2 F. J. Garcia-Vidal,2,3 and O. Hess1,† 1Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ, United Kingdom 2Departamento de Fı́sica Teórica de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid, Spain 3Donostia International Physics Center (DIPC), E-20018 Do...

Nonequilibrium relaxation times in polymer knot groups.

Flexible polymer knots with strict topological constraint of no segment crossing are studied by Monte Carlo simulations. The nonequilibrium relaxation time of an equilibrated polymer knot cut at one point to relax to a linear chain is measured. Prime knots up to 20 essential crossings from the groups (3(1),5(1),7(1),...), (4(1),6(1),8(1),...) and (5(2),7(2),9(2),...), (6(2),8(2),10(2),...) are ...

Nonlinear spin relaxation in strongly nonequilibrium magnets

A general theory is developed for describing the nonlinear relaxation of spin systems from a strongly nonequilibrium initial state, when, in addition, the sample is coupled to a resonator. Such processes are characterized by nonlinear stochastic differential equations. This makes these strongly nonequilibrium processes principally different from the spin relaxation close to an equilibrium state...

Relaxation Dynamics in the Nonequilibrium IsingModel

We show that additional independent exponents characterize relaxation properties in the nonequilibrium Ising model. In particular, we investigate the domain number distribution in the 1D zero temperature Ising and the q-state Potts models evolving according to Glauber spin-ip dynamics. This distribution is characterized by two independent nontrivial exponents corresponding to the algebraic deca...

Nonequilibrium photoinduced electron transfer