"Quantum scattering"의 두 판 사이의 차이

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4번째 줄: 4번째 줄:
 
* discrete spectrum <math>\lambda<0</math>
 
* discrete spectrum <math>\lambda<0</math>
 
* continuous spectrum <math>\lambda>0</math>
 
* continuous spectrum <math>\lambda>0</math>
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* for lists [http://en.wikipedia.org/wiki/Delta_potential_barrier_%28QM%29 http://en.wikipedia.org/wiki/Delta_potential_barrier_(QM)]
  
 
 
 
 
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<h5>harmonic</h5>
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<h5>harmonic oscillator</h5>
  
 
* [[harmonic oscillator in quantum mechanics]]
 
* [[harmonic oscillator in quantum mechanics]]
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 +
 
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22번째 줄: 27번째 줄:
 
* a(k) transmission coefficient
 
* a(k) transmission coefficient
 
* b(k) reflection coefficient
 
* b(k) reflection coefficient
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 +
<math>\varphi \sim e^{-ikx}+\rho(k,t)e^{ikx}</math> as <math>x\to +\infty</math>
 +
 +
<math>\varphi \sim \tau(k,t)e^{-ikx}</math> as <math>x\to -\infty</math>
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 +
<math>\rho(k,t)</math> and <math>\tau(k,t)</math> are called the reflection and transmission coefficient
  
 
 
 
 
65번째 줄: 76번째 줄:
  
 
* http://en.wikipedia.org/wiki/
 
* http://en.wikipedia.org/wiki/
 +
* [http://en.wikipedia.org/wiki/Delta_potential_barrier_%28QM%29 http://en.wikipedia.org/wiki/Delta_potential_barrier_(QM)]
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* http://en.wikipedia.org/wiki/Rectangular_potential_barrier
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* http://en.wikipedia.org/wiki/Step_potential
 
* http://www.scholarpedia.org/
 
* http://www.scholarpedia.org/
 
* [http://eom.springer.de/ http://eom.springer.de]
 
* [http://eom.springer.de/ http://eom.springer.de]

2011년 2월 8일 (화) 09:05 판

introduction

 

 

harmonic oscillator

 

 

 

 

continuous spectrum
  • \(a(k)e^{-ikx}+b(k)e^{ikx}\)
  • a(k) transmission coefficient
  • b(k) reflection coefficient

\(\varphi \sim e^{-ikx}+\rho(k,t)e^{ikx}\) as \(x\to +\infty\)

\(\varphi \sim \tau(k,t)e^{-ikx}\) as \(x\to -\infty\)

\(\rho(k,t)\) and \(\tau(k,t)\) are called the reflection and transmission coefficient

 

 

time independent Schrodinger equation
  • Schrodinger equation
    \(E \psi = -\frac{\hbar^2}{2m}{\partial^2 \psi \over \partial x^2} + V(x)\psi\)
  • \(\varphi_{xx}+(\lambda-u)\varphi=0\)

 

 

example
  1. \[Lambda] := -1
    u[x_] := -2 Sech[x]^2
    f[x_] := Sech[x]
    Simplify[D[D[f[x], x], x] + (\[Lambda] - u[x]) f[x]]
    Plot[u[x], {x, -5, 5}]

 

 

 

history

 

 

related items

 

 

encyclopedia

 

 

books

 

 

 

expositions

 

 

 

articles

 

 

question and answers(Math Overflow)

 

 

blogs

 

 

experts on the field

 

 

links