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File:Symmetricwave2.png

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Original file (1,811 × 1,356 pixels, file size: 540 KB, MIME type: image/png)

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Summary

Description
English: Symmetric wavefunction for a (bosonic) 2-particle state in an infinite square well potential.
Source Own work
Author TimothyRias

Licensing

I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

Summary

This 3D graph shows the wavefunction for the 2-particle bosonic state for the one dimensional infinite square well at the same energy as the fermionic 2-particle groundstate. (See for example D.J. Griffiths, Introduction to quantum mechanics, Prentice Hall , 1995, section 5.1.1) The picture was created using Mathematica 6.0 using the following code:

$Assumptions = {n \[Element] Integers, m \[Element] Integers};
f[n_, x_] := Sqrt[2] Sin[n \[Pi] x];
s[n_, m_] := 
 Function[{x, y}, (f[n, x] f[m, y] + f[n, y] f[m, x])/Sqrt[2]];
swave2 = Plot3D[Evaluate[-s[3, 1][x, y]], {x, 0, 1}, {y, 0, 1},
  PlotPoints -> 35,
  PlotRange -> {-2.5, 3.5},
  MeshFunctions -> {#3 &},
  MeshStyle -> 
   Directive[ColorData["DeepSeaColors"][.1], Thickness[.002]],
  Mesh -> 10,
  ColorFunction -> "LakeColors",
  BoxRatios -> {1, 1, .7},
  Boxed -> False,
  Axes -> False];
sgroundplot = Plot3D[-3, {x, 0, 1}, {y, 0, 1},
  MeshFunctions -> {s[1, 3][#1, #2] &},
  Mesh -> 10,
  MeshStyle -> 
   Directive[ColorData["DeepSeaColors"][.1], Thickness[.002]],
  PlotPoints -> 50,
  ColorFunction -> (ColorData["LakeColors"][(-s[1, 3][#1, #2] + 2.5)/
      6] &)];
swave3 = Show[{swave2, sgroundplot},
 PlotRange -> {{0, 1}, {0, 1}, {-3, 3}},
 Axes -> None,
 PlotRangePadding -> None,
 ImagePadding -> 1,
 FaceGrids -> {
   {{-1, 0, 0}, {Table[i, {i, 0, 1, 1/9}], 
     Table[i, {i, -3, 3, 1}]}},
   {{0, -1, 0}, {Table[i, {i, 0, 1, 1/9}], Table[i, {i, -3, 3, 1}]}}
   },
 ViewPoint -> 1000 {5, 5, 2},
 ViewVertical -> {0, 0, 1},
 ViewCenter -> {.5, .5, 0},
 ImageSize -> 600]
Export["Symmetricwave2.png", swave3, "PNG"]

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Date/TimeThumbnailDimensionsUserComment
current15:52, 19 February 2024Thumbnail for version as of 15:52, 19 February 20241,811 × 1,356 (540 KB)JähmefyysikkoAntialiasing and higher resolution
13:18, 15 October 2008Thumbnail for version as of 13:18, 15 October 2008600 × 450 (79 KB)TimothyRias{{Information |Description= |Source= |Date= |Author= |Permission= |other_versions= }} Category:Physics plots
14:52, 7 October 2008Thumbnail for version as of 14:52, 7 October 2008360 × 286 (25 KB)TimothyRias{{Information |Description={{en|1=Symmetric wavefunction}} |Source=Own work by uploader |Author=TimothyRias |Date= |Permission= |other_versions= }} <!--{{ImageUpload|full}}-->

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