# metadata.dc.description.abstract[].value
Lying at the core of statistical physics is the need to reduce the number of degrees of freedom in a system. Coarse-graining is a frequently-used procedure to bridge molecular modeling with experiments. In equilibrium systems, this task can be readily performed; however in systems outside equilibrium, a possible lack of equilibration of the eliminated degrees of freedom may lead to incomplete or even misleading descriptions. Here, we present some examples showing how an improper coarse-graining procedure may result in linear approaches to nonlinear processes, miscalculations of activation rates and violations of the fluctuation-dissipation theorem.

# metadata.dc.rights[].value
cc-by-nc (c) Rubí Capaceti, José Miguel et al., 2013

# metadata.dc.source[].value
Articles publicats en revistes (Física de la Matèria Condensada)