I currently have the following equation:
\begin{align}
\begin{split}
\left| \Psi \left( t \right) \right\rangle _{I}^{3}&=-\frac{1}{{{\hbar}^{2}}}\int_{0}^{t}{\hat{H}_{1}^{I}\left( t' \right)\,}\left( \int_{0}^{t}{\hat{H}_{1}^{I}\left( t'' \right)dt''} \right)dt' \notag \\
& =-\frac{1}{\hbar }\int_{0}^{t}{\hat{H}_{1}^{I}\left( t' \right)\,}\left( -\frac{g}{\Delta }\left( -{{{\hat{A}}}_{+}}\left( {{e}^{-i\Delta t'}}-1 \right)+{{{\hat{A}}}_{-}}\left( {{e}^{i\Delta t'}}-1 \right) \right) \right)dt' \notag \\
& =\frac{1}{\hbar }\int_{0}^{t}{\hbar g\left( {{{\hat{A}}}_{+}}{{e}^{-i\Delta t'}}+{{{\hat{A}}}_{-}}{{e}^{i\Delta t'}} \right)\,}\left( -\frac{g}{\Delta }\left( -{{{\hat{A}}}_{+}}\left( {{e}^{-i\Delta t'}}-1 \right)+{{{\hat{A}}}_{-}}\left( {{e}^{i\Delta t'}}-1 \right) \right) \right)dt' \notag \\
&=-\frac{{{g}^{2}}}{\Delta }\Bigg[ -\frac{1}{2i\Delta }{{e}^{-2i\Delta t'}}{{{\hat{A}}}_{+}}{{{\hat{A}}}_{+}}+\frac{1}{i\Delta }{{e}^{-i\Delta t'}}{{{\hat{A}}}_{+}}{{{\hat{A}}}_{+}}-{{{\hat{A}}}_{+}}{{{\hat{A}}}_{-}}-\frac{1}{i\Delta }{{e}^{-i\Delta t'}}{{{\hat{A}}}_{+}}{{{\hat{A}}}_{-}} \\ &+{{{\hat{A}}}_{-}}{{{\hat{A}}}_{+}}-\frac{1}{i\Delta }{{e}^{i\Delta t'}}{{{\hat{A}}}_{-}}{{{\hat{A}}}_{+}}-\frac{1}{2i\Delta }{{e}^{2i\Delta t'}}{{{\hat{A}}}_{-}}{{{\hat{A}}}_{+}}+\frac{1}{i\Delta }{{e}^{i\Delta t'}}{{{\hat{A}}}_{-}}{{{\hat{A}}}_{+}} \Bigg]_{0}^{t} \notag
\end{split}
\end{align}
From this I get 5 lines, where the last two are split up. But the last one is split up inside a bracket. My question is, can I align the last line, with the + sign, with the first minus sign, inside the bracket, instead of aligning with the = sign ?
Thanks in advance.
Best Answer
Please always post complete documents, not just fragments.
You can use
\phantom
(I'm assuming this is cut down from some larger example, as there is no need to have an alignment just consisting of a
split
)