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Paper   IPM / Physic / 6916
School of Physics
  Title:   Pair Densities at Contact in the Quantum Electron Gas
  Author(s): 
1.  R. Asgari
2.  M. Polini
3.  B. Davoudi
4.  M. P. Tosi
  Status:   Published
  Journal: Solid State Commun.
  No.:  104
  Vol.:  125
  Year:  2003
  Pages:   139-142
  Supported by:  IPM
  Abstract:
The value of the pair distribution function g(r) at contact (r = 0) in a quantum electron gas is determined by the scattering events between pairs of electrons with antiparallel spins. The theoretical results for g(0) as a function of the coupling strength rs in the paramagnetic electron gas in dimensionality D=2 and 3, that have been obtained from the solution of the two-body scattering problem with a variety of effective scattering potentials embodying many-body effects, are compared with the results of many-body calculations in the ladder approximation and with quantum Monte Carlo data.

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