Massive phonon modes from a BEC-based analog model

Details Massive phonon modes from a BEC-based analog model Massive phonon modes from a BEC-based analog model

2004-09-24

arxiv.org/abs/cond-mat/0409639v2

Physics

Condensed Matter

Statistical Mechanics

4 pages; uses revtex4

Scientific paper

Two-component BECs subject to laser-induced coupling exhibit a complicated spectrum of excitations, which can be viewed as two interacting phonon modes. We study the conditions required to make these two phonon modes decouple. Once decoupled, the phonons not only can be arranged travel at different speeds, but one of the modes can be given a mass -- it exhibits the dispersion relation of a massive relativistic particle: omega = sqrt{omega_0^2 + c^2 k^2}. This is a new and unexpected excitation mode for the coupled BEC system. Apart from its intrinsic interest to the BEC community, this observation is also of interest for the ``analogue gravity'' programme, as it opens the possibility for using BECs to simulate massive relativistic particles in an effective ``acoustic geometry''.

Affiliated with

Also associated with

No associations

Rating

Massive phonon modes from a BEC-based analog model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Massive phonon modes from a BEC-based analog model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Massive phonon modes from a BEC-based analog model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-694825