Dynamical instability of the XY spiral state of ferromagnetic condensates |
| |
Authors: | Cherng R W Gritsev V Stamper-Kurn D M Demler E |
| |
Affiliation: | Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA. |
| |
Abstract: | We calculate the spectrum of collective excitations of the XY spiral state prepared adiabatically or suddenly from a uniform ferromagnetic F=1 condensate. For spiral wave vectors past a critical value, spin wave excitation energies become imaginary indicating a dynamical instability. We construct phase diagrams as functions of spiral wave vector and quadratic Zeeman energy. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|