X-Git-Url: https://hackdaworld.org/gitweb/?a=blobdiff_plain;f=posic%2Ftalks%2Fmpi_app.tex;h=c05db6d4c9e8b6d360585b0f6a68dd4fe9ab5b06;hb=3110674b7fbd4e9459e892009750942a3f83b686;hp=f588e1d46a4248e8e52a74e2bfb1f30e89ac949f;hpb=246b317e6fcfc986641a3c20cf8722f40ae131ac;p=lectures%2Flatex.git diff --git a/posic/talks/mpi_app.tex b/posic/talks/mpi_app.tex index f588e1d..c05db6d 100644 --- a/posic/talks/mpi_app.tex +++ b/posic/talks/mpi_app.tex @@ -1008,7 +1008,6 @@ r = \unit[2--4]{nm} {\bf Molecular dynamics (MD)}\\ \scriptsize \begin{tabular}{p{4.5cm} p{7.5cm}} -%\hline Basics & Details\\ \hline System of $N$ particles & @@ -1026,16 +1025,8 @@ E = \frac{1}{2} \sum_{i \neq j} \pot_{ij}, \quad \left[ f_R(r_{ij}) + {\color{blue}b_{ij}} f_A(r_{ij}) \right] $\\ \hline -%\multicolumn{2}{c}{}\\ Observables: time/ensemble averages & NpT (isothermal-isobaric) | Berendsen thermostat/barostat\\ -%\begin{itemize} -%\item Berendsen thermostat: -% $\tau_{\text{T}}=100\text{ fs}$ -%\item Berendsen barostat:\\ -% $\tau_{\text{P}}=100\text{ fs}$, -% $\beta^{-1}=100\text{ GPa}$ -%\end{itemize}\\ \hline \end{tabular} @@ -1050,11 +1041,13 @@ NpT (isothermal-isobaric) | Berendsen thermostat/barostat\\ \begin{minipage}[t]{6cm} \underline{Basics} \begin{itemize} - \item Born-Oppenheimer approximation:\\ - Decouple electronic \& ionic motion - \item Hohenberg-Kohn theorem:\\ - $n_0(r) \stackrel{\text{uniquely}}{\rightarrow}$ - $V_0$ / $H$ / $\Phi_i$ / \underline{$E_0$} + \item $\Psi_0(r_1,r_2,\ldots,r_N)=\Psi[n_0(r)]$, $E_0=E[n_0]$ + \item Single-particle effective theory +% \item Born-Oppenheimer approximation:\\ +% Decouple electronic \& ionic motion +% \item Hohenberg-Kohn theorem:\\ +% $n_0(r) \stackrel{\text{uniquely}}{\rightarrow}$ +% $V_0$ / $H$ / $\Phi_i$ / \underline{$E_0$} \end{itemize} \underline{Details} \begin{itemize} @@ -1067,10 +1060,23 @@ $\displaystyle E_{\text{cut}}=\frac{\hbar^2}{2m}G^2_{\text{cut}}=\unit[300]{eV} $ \item Ultrasoft pseudopotential +\item Exchange \& correlation: GGA \item Brillouin zone sampling: $\Gamma$-point \end{itemize} \end{minipage} \begin{minipage}[t]{6cm} + +\[ +\left[ -\frac{\hbar^2}{2m}\nabla^2 + V_{\text{eff}}(r) - \epsilon_i \right] \Phi_i(r) = 0 +\] +\[ +n(r)=\sum_i^N|\Phi_i(r)|^2 +\] +\[ +V_{\text{eff}}(r)=V_{\text{ext}}(r)+\int\frac{e^2 n(r')}{|r-r'|}d^3r' + +V_{\text{XC}}[n(r)] +\] + \end{minipage} \end{slide}