A parameter in the Gaussian potential, which can be used
as a reference model for adiabatic switching simulations.

<p>
&Phi;(r) = <tt>Gauss_epsilon</tt> &sdot; exp(- r<sup>2</sup> / (2 * <tt>Gauss_sigma</tt><sup>2</sup> )
&nbsp; (if r < <tt>Gauss_rc</tt>)

<p>
Also see <tt>runMDSWITCH</tt>, <tt>runMCSWITCH</tt>.

