next up previous contents
Next: Obtaining the momentum distribution Up: Bethe ansatz solutions Previous: Numerical solution   Contents

Expansions

Energy expansion, unit of energy $\hbar^2/2ma_{1D}^2$:


$\displaystyle \begin{array}{\vert c\vert c\vert c\vert c\vert c\vert}
\hline
te...
...)^2}{12}&\displaystyle
n\vert a_{1D}\vert&\displaystyle
&\\
\hline
\end{array}$      

Expansion of the chemical potential, unit of energy $\hbar^2/2ma_{1D}^2$:


$\displaystyle \begin{array}{\vert c\vert c\vert c\vert c\vert c\vert}
\hline
te...
...displaystyle
\frac{8\pi^2}{3} (na_{1D})^3&\displaystyle
&\\
\hline
\end{array}$      

The frequency of the oscillations $\frac{\omega^2}{\omega_z^2} =4(1+\triangle\omega)$


$\displaystyle \begin{array}{\vert l\vert c\vert}
\hline
$limit$&\displaystyle
\...
...e
\frac{32\sqrt{2}}{15\pi^2} \frac{\sqrt{N}a_{1D}}{a_{z}}\\
\hline
\end{array}$      

Speed of sound in units of $m/\pi\hbar n$


$\displaystyle \begin{array}{\vert c\vert c\vert c\vert c\vert c\vert}
\hline
te...
...}{2}&\displaystyle
\frac{1}{\pi^2na_{1D}}&\displaystyle
&\\
\hline
\end{array}$      

Energy and chemical potential (LDA) in units of $N\hbar\omega_z$


$\displaystyle \begin{array}{\vert l\vert c\vert c\vert}
\hline
$limit$&\display...
...eft(1-\frac{32}{3\pi^2}/\frac{\sqrt{N}a_{1D}}{a_z}\right)\\
\hline
\end{array}$      

Size of the condensate and mean $z^2$ in units of $a_z^2$


$\displaystyle \begin{array}{\vert l\vert c\vert c\vert}
\hline
$limit$&\display...
...eft(1-\frac{16}{3\pi^2}/\frac{\sqrt{N}a_{1D}}{a_z}\right)\\
\hline
\end{array}$      


next up previous contents
Next: Obtaining the momentum distribution Up: Bethe ansatz solutions Previous: Numerical solution   Contents
G.E. Astrakharchik 15-th of December 2004