2008/06/19 by Alfredo Takashi Suzuki, Suzuki, Alfredo Takashi
Mathematics · Physics and Astronomy · #28E05 #FOS: Physical sciences #Mathematical Physics (math-ph) #math-ph #math.MP #msc:28E05
paper · pdf · doi:10.48550/arxiv.0806.3216
4 pages, no figures
arxiv created 2008/06/19 · arxiv updated 2009/12/01
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 ω 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.