Heriot-Watt Mathematics Report Series
HWM98-3, 5 Feb 1998
A breather-like localised mode in a FPU lattice interacting with an electron
Y Zolotaryuk and J.C. Eilbeck
Abstract
A theoretical study in the framework of a variational approach
is presented for the Fermi-Pasta-Ulam (FPU) chain interacting
with an extra electron. Standing three-component soliton
solutions which describe coupled states of an acoustic polaron
with longitudinal lattice vibrations are found. This result is
confirmed by numerical simulations and extended qualitatively to
a chain with a realistic inter-particle potential of a general
form.
Google Scholar Search: links, citations and journal (if available)
Full text: www.ma.hw.ac.uk/~chris/FPUbreathers.tex
Contact Details | 1998 Reports Index |
Full Index