Negative dimensional approach to evaluating real integrals

Details Negative dimensional approach to evaluating real integrals Negative dimensional approach to evaluating real integrals

2008-06-19

arxiv.org/abs/0806.3216v1

Physics

Mathematical Physics

4 pages, no figures

Scientific paper

In solving the differential equation for a non damped harmonic oscillator one meets, after subjecting the equation to a Fourier transformation, an integration in the complex $\omega$ plane. In most cases such an integral is evaluated by calculating residues together with some physical input such as the principle of causality to define which pole residues are relevant to the physical problem. For this kind of application, Cauchy's theorem or residue theorem can be applied to evaluate certain real integrals. Here we present an alternative approach based on the concept of negative dimensional integration to treat such integrals and give an specific example on how this is accomplished.

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