Re: parameters for NVT ensemble

From: Jérôme Hénin (jerome.henin_at_uhp-nancy.fr)
Date: Fri Jan 07 2005 - 07:58:12 CST

Hi Leyla,

> What about the Langevin coupling coefficient? So far we have only used
> Langevin dynamics in Stochatic Boundary simulations, so I am a bit confused
> about using it, as a means to controlling the temperature. I have seen
> previous posts on the list giving a value of 1 ps-1 is that a good value,
> or does it restrain the protein to much?

I would say: use the smallest value that keeps your temperature reasonably
constant, to stay close to Newtonian dynamics (at least on short timescales).
If nothing terrible is happening in your system, 0.1 or 0.2 ps-1 might be
enough.

Jerome

-- 
Jérôme Hénin
Equipe de Dynamique des Assemblages Membranaires
Université Henri Poincaré / CNRS    UMR 7565
B.P. 239        54506 Vandoeuvre-lès-Nancy Cedex
Tel : (33) 3 83 68 43 95        Fax : (33) 3 83 68 43 71
http://www.edam.uhp-nancy.fr/

This archive was generated by hypermail 2.1.6 : Wed Feb 29 2012 - 15:39:05 CST