able, Hamiltonian function [If None this will be the non_interacting function]. (default = None)</span>
<span class="sd">    |     restricted: bool, Is the calculation restricted (r) on unrestricted (u). (default=False)</span>

<span class="sd">    | Returns:</span>
<span class="sd">    |     evolution: iDEA.state.SingleBodyEvolution, Solved time-dependent evolution.</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="k">return</span> <span class="n">iDEA</span><span class="o">.</span><sp