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This file was created with Python , SciPy and Matplotlib .
from __future__ import division
from numpy import cosh , arccosh , sqrt , linspace
import matplotlib.pyplot as plt
from matplotlib import rcParams
rcParams [ 'font.family' ] = 'serif'
rcParams [ 'font.size' ] = 16
lam = 6
x = linspace ( - 3 , 3 , 201 )
y = - lam * ( lam + 1 ) / ( 2 * cosh ( x ) ** 2 )
plt . plot ( x , y , 'k' , lw = 2 , zorder = 4 )
for k in range ( 1 , lam + 1 ):
yval = - 0.5 * k ** 2
xval = arccosh ( sqrt ( - lam ** 2 / yval - lam / yval ) / sqrt ( 2 ))
plt . plot ([ - xval , xval ], [ yval , yval ], 'r' , lw = 2 , zorder = 3 )
plt . xlabel ( r "$x$" )
plt . ylabel ( r "$V(x)$" )
plt . savefig ( "Poschl-Teller potential.svg" )
plt . show ()
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Date/Time Thumbnail Dimensions User Comment
current 23:36, 2 January 2016 720 × 540 (19 KB) Nicoguaro {{subst:Upload marker added by en.wp UW}} {{Information |Description = {{en|Symmetric Pöschl-Teller potential: <math> -\frac{\lambda(\lambda +1)}{2} \operatorname{sech}^2(x)</math>. It shows the eigenvalues for μ=1, 2, 3, 4, 5.}} |Source = {{own}} |D...
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