From 5cacf4ffaf3a9621ab536195f6469f98a420f054 Mon Sep 17 00:00:00 2001 From: Prefetch Date: Sat, 5 Sep 2026 21:55:33 +0200 Subject: Improve knowledge base --- source/know/concept/equation-of-motion-theory/index.md | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'source/know/concept/equation-of-motion-theory') diff --git a/source/know/concept/equation-of-motion-theory/index.md b/source/know/concept/equation-of-motion-theory/index.md index c1ed8da..76cee81 100644 --- a/source/know/concept/equation-of-motion-theory/index.md +++ b/source/know/concept/equation-of-motion-theory/index.md @@ -100,7 +100,8 @@ $$\begin{aligned} \\ &= \sum_{\nu' \nu''} u_{\nu' \nu''} \Big( \delta_{\nu \nu'} \hat{f}_{\!\nu''} - 2 \acomm{\hat{f}_{\!\nu'}^\dagger}{\hat{f}_{\!\nu}} \hat{f}_{\!\nu''} \Big) - = - \sum_{\nu''} u_{\nu \nu''} \hat{f}_{\!\nu''} + \\ + &= - \sum_{\nu''} u_{\nu \nu''} \hat{f}_{\!\nu''} \end{aligned}$$ {% include proof/end.html id="proof-commutator" %} @@ -160,7 +161,7 @@ $$\begin{aligned} \end{aligned}$$ We take the [Fourier transform](/know/concept/fourier-transform/) -$$(t \!-\! t') \to (\omega + i \eta)$$, where $$\eta \to 0^+$$ ensures convergence: +$$(t - t') \to (\omega + i \eta)$$, where $$\eta \to 0^+$$ ensures convergence: $$\begin{aligned} \sum_{\nu''} \Big( \hbar \delta_{\nu \nu''} (\omega + i \eta) - u_{\nu \nu''} \Big) G^R_{\nu'' \nu'}(\omega) @@ -178,7 +179,7 @@ $$\begin{aligned} \end{aligned}$$ For a non-interacting, time-independent Hamiltonian, -we therefore arrive at: +we thus arrive at the famous result: $$\begin{aligned} \boxed{ -- cgit v1.3