Integral representation of modified Bessel function of the second kind

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SUMMARY

The integral representation of the modified Bessel function of the second kind, specifically for K_{1/2}, is given by the equation z^{-\frac{1}{4}}K_{1/2}(\sqrt{z}) \propto \int_{0}^{\infty}dt\exp^{-zt-1/t}t^{-1/2}. To generalize this representation for arbitrary \nu, one can explore generating functions or other integral forms. The discussion emphasizes the need for a systematic approach to derive the general form from the specific case provided.

PREREQUISITES
  • Understanding of modified Bessel functions, specifically K_{\nu}
  • Familiarity with integral calculus and exponential functions
  • Knowledge of generating functions in mathematical analysis
  • Basic concepts of asymptotic analysis for large parameters
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  • Research the properties and applications of modified Bessel functions of the second kind
  • Study integral representations of special functions
  • Explore generating functions related to Bessel functions
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ulriksvensson
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Hi all. I need an integral representation of z^{-\nu}K_{\nu} of a particular form. For K_{1/2} it looks like this:

z^{-\frac{1}{4}}K_{1/2}(\sqrt{z}) \propto \int_{0}^{\infty}dt\exp^{-zt-1/t}t^{-1/2}

How do I generalize this for arbitrary \nu? A hint is enough, maybe there's a generating function one can use?

//Ulrik
 
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Hi
The general form is attached.
 

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