From 714b17c2072f11d618e6f6bf9288d02d31a90176 Mon Sep 17 00:00:00 2001
From: Jan Benda <jan.benda@uni-tuebingen.de>
Date: Mon, 3 Mar 2025 18:01:42 +0100
Subject: [PATCH] Revert "fixed chi2 denominator (added sqrt)"

This reverts commit 3e42267b203aa913fe0a6a06062df91e5bc408aa.
---
 susceptibility1.tex | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/susceptibility1.tex b/susceptibility1.tex
index 3d9254a..30b6c01 100644
--- a/susceptibility1.tex
+++ b/susceptibility1.tex
@@ -685,9 +685,8 @@ describes nonlinear interactions that generate responses at the sum and differen
 The second-order susceptibility
 \begin{equation}
   \label{eq:susceptibility}
-  \chi_{2}(\omega_{1}, \omega_{2}) = \frac{S_{xss} (\omega_{1},\omega_{2})}{2\sqrt{S_{ss} (\omega_{1}) S_{ss} (\omega_{2})}}
+  \chi_{2}(\omega_{1}, \omega_{2}) = \frac{S_{xss} (\omega_{1},\omega_{2})}{2S_{ss} (\omega_{1}) S_{ss} (\omega_{2})}
 \end{equation}
-\note{is the denominator right? What is the unit?}
 normalizes the second-order cross-spectrum by the spectral power at the two stimulus frequencies.
 % Applying the Fourier transform this can be rewritten resulting in:
 % \begin{equation}