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authorJaron Kent-Dobias <jaron@kent-dobias.com>2021-06-10 13:41:19 +0200
committerJaron Kent-Dobias <jaron@kent-dobias.com>2021-06-10 13:41:19 +0200
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@@ -74,7 +74,7 @@ landscapes, which are typically constructed from the limits of series or
integrals of analytic functions which are not themselves analytic
\cite{Cavagna_1999_Energy}.
-\section{Dynamics}
+\section{Integration by Lefschetz thimble}
Consider an $N$-dimensional hermitian manifold $M$ and a Hamiltonian $H:M\to\mathbb C$. The partition function
\begin{equation}
@@ -111,6 +111,8 @@ Morse theory provides the universal correspondence between contours and thimbles
Each of these integrals is very well-behaved: convergent asymptotic series
exist for their value about the critical point $\sigma$, for example. One must know the integer weights $n_\sigma$.
+\section{Gradient descent dynamics}
+
For a holomorphic Hamiltonian $H$, dynamics are defined by gradient descent on
$\operatorname{Re}H$. In hermitian geometry, the gradient is given by raising
an index of the conjugate differential, or