Lieb-Liniger delta Bose gas

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imported>Pythagoras0님의 2012년 10월 28일 (일) 15:31 판 (찾아 바꾸기 – “</h5>” 문자열을 “==” 문자열로)
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introduction==
  • N bosons interacting on a line of length L via the delta function potential
  • one-dimensional Bose gas
  • 1963 Lieb and Liniger solved by Bethe ansatz
     
Hamiltonian==
  • quantum mechanical Hamiltonian
    \(H=-\sum_{j=1}^{N}\frac{\partial^2}{\partial x_j^2}+2c\sum_{1\leq i<j\leq N}^{N}\delta(x_i-x_j)\)
     
two-body scattering term==
  • \(s_{ab}=k_a-k_b+ic\)
   
Bethe-ansatz equation== \(\exp(ik_jL)=\prod_{l=1}^{N}\frac{k_j-k_l+ic}{k_j-k_l-ic}\)    
energy spectrum== \(E=\sum_{j=1}^{N}k_j^2\)      
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