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Approximations for the WhittakerW functions

  1. Jun 4, 2014 #1
    Fellow researchers out there,

    I am not a mathematician. However, I have come across in solving few cumbersome integrals involving the whittakerW function in my research. If any one has come across a technique which gives a simple approximations for the WhittakerW function please respond.

    The specific Whittaker function I am looking at is the following,

    W_{-1/2,0}(z) ,

    For the problem I am looking at generally, z< 1 . The approximation need to fit well for the z values close to 0.

  2. jcsd
  3. Jun 4, 2014 #2


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  4. Jun 4, 2014 #3
    Thanks jason. I ll try to take forward the calculation with it!
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