Figure 2

Numerical evaluation of equation ( 24 ). (a) \(\omega_{1}=0.1\), \(\omega_{2}=1\); (b) \(\omega_{1}=0.6\), \(\omega_{2}=0.9\); (c) \(\omega_{1}=0.9\), \(\omega _{2}=0.4\), and (d) \(\omega_{1}=0.5\), \(\omega_{2}=0.5\). For all cases: a solid line corresponds to \(\gamma=1\), a dash line corresponds to \(\gamma=0.9\), a dot line corresponds to \(\gamma=0.8\), and a dash-dot line corresponds to \(\gamma=0.7\).