原本檔案(1,811 × 1,356 像素,檔案大細:540 KB ,MIME類型:image/png


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摘要

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English: Symmetric wavefunction for a (bosonic) 2-particle state in an infinite square well potential.
來源 自己作品
作者 TimothyRias

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摘要

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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現時2024年2月19號 (一) 15:52響2024年2月19號 (一) 15:52嘅縮圖版本1,811 × 1,356(540 KB)JähmefyysikkoAntialiasing and higher resolution
2008年10月15號 (三) 13:18響2008年10月15號 (三) 13:18嘅縮圖版本600 × 450(79 KB)TimothyRias{{Information |Description= |Source= |Date= |Author= |Permission= |other_versions= }} Category:Physics plots
2008年10月7號 (二) 14:52響2008年10月7號 (二) 14:52嘅縮圖版本360 × 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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