Random walks interacting with evolving energy landscapes |
| |
Authors: | Email author" target="_blank">E?AgliariEmail author R?Burioni D?Cassi A?Vezzani |
| |
Institution: | (1) Università degli Studi di Parma, Parco Area delle Scienze 7/a, 43100 Parma, Italy;(2) Istituto Nazionale Fisica della Materia (INFM), UdR PARMA, Parco Area delle Scienze 7/a, 43100 Parma, Italy |
| |
Abstract: | We introduce a diffusion model for energetically
inhomogeneous systems. A random walker moves on a spin-S Ising
configuration, which generates the energy landscape on the lattice
through the nearest-neighbors interaction. The underlying
energetic environment is also made dynamic by properly coupling
the walker with the spin lattice. In fact, while the walker hops
across nearest-neighbor sites, it can flip the pertaining spins,
realizing a diffusive dynamics for the Ising system. As a result,
the walk is biased towards high energy regions, namely the
boundaries between clusters. Besides, the coupling introduced
involves, with respect the ordinary diffusion laws, interesting
corrections depending on either the temperature and the spin
magnitude. In particular, they provide a further signature of the
phase-transition occurring on the magnetic lattice. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|