# How to realize long-range interaction of colds atom in an optical lattice?

+ 4 like - 0 dislike
68 views

In the Bose-Hubbard model of cold atoms in an optical lattice, we consider only the short-range interaction or on-site interaction. Is it possible to realize long-range interaction similar to Coulomb interaction in the cold atom experiment?

This post imported from StackExchange Physics at 2014-03-24 04:15 (UCT), posted by SE-user Jeremy
retagged Mar 24, 2014

+ 1 like - 0 dislike

A way to get long-range interactions in cold atoms is to use polar molecules, which is a rapidly growing field in the cold atoms community.

This post imported from StackExchange Physics at 2014-03-24 04:15 (UCT), posted by SE-user Adam
answered Nov 22, 2013 by (105 points)
+ 1 like - 0 dislike

Check out the introduction of e.g. this paper for an example of long range Van der Waals forces, which are encountered in cold atom experiments. These forces occur between highly excited atoms called Rydberg atoms and behave as $n^{11}/r^6$, where $n$ is the principal quantum number, which is extraordinary high for these atoms.

This post imported from StackExchange Physics at 2014-03-24 04:15 (UCT), posted by SE-user Funzies
answered Jan 21, 2014 by (5 points)

 Please use answers only to (at least partly) answer questions. To comment, discuss, or ask for clarification, leave a comment instead. To mask links under text, please type your text, highlight it, and click the "link" button. You can then enter your link URL. Please consult the FAQ for as to how to format your post. This is the answer box; if you want to write a comment instead, please use the 'add comment' button. Live preview (may slow down editor)   Preview Your name to display (optional): Email me at this address if my answer is selected or commented on: Privacy: Your email address will only be used for sending these notifications. Anti-spam verification: If you are a human please identify the position of the character covered by the symbol $\varnothing$ in the following word:p$\hbar$ysicsOve$\varnothing$flowThen drag the red bullet below over the corresponding character of our banner. When you drop it there, the bullet changes to green (on slow internet connections after a few seconds). To avoid this verification in future, please log in or register.