<li>descriptor (string) = time integration type <br/>
</li>
</ul>
<p>various time integration methods for the finite elements<br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<p>gear - atomic velocity update with 2nd order Verlet, nodal temperature update with 3rd or 4th order Gear, thermostats based on controlling power <br/>
fractional_step - atomic velocity update with 2nd order Verlet, mixed nodal temperature update, 3/4 Gear for continuum and 2 Verlet for atomic contributions, thermostats based on controlling discrete energy changes<br/>