3 papers
cond-mat.stat-mech2018
Amplitude of jump motion signatures in classical vibration-jump dynamic
Peter S. M. Townsend, John Ellis
The classical Langevin dynamics of a particle in a periodic potential energy landscape are studied via the intermediate scattering function (ISF). By construction, the particle per…
cond-mat.stat-mech2018
The intermediate scattering function for quasi-elastic scattering in the presence of memory friction
Peter Stephen Morris Townsend, David James Ward
We derive an analytical expression for the intermediate scattering function of a particle on a flat surface obeying the Generalised Langevin Equation, with exponential memory frict…
quant-ph2018
Intermediate scattering function and quantum recoil in non-Markovian quantum diffusion
Peter S. M. Townsend, Alex W. Chin
Exact expressions are derived for the intermediate scattering function (ISF) of a quantum particle diffusing in a harmonic potential and linearly coupled to a harmonic bath. The re…