Feynman integrals are mathematical tools used to describe the behavior of particles in quantum field theory. These integrals are named after physicist Richard Feynman, who first introduced them in the ...

Abstract: SUMMARY We consider integrals of products of Bessel functions and of spherical Bessel functions, combined with a Gaussian factor guaranteeing convergence at infinity. These integrals arise ...

Abstract: A simple, unified approach to solve in closed forms various complex integrals is presented. The basic idea behind this method is to identify the well-known infinite series solution of the ...

In large-scale quantum-chemical calculations, the electron-repulsion integral (ERI) tensor rapidly becomes the bottleneck in terms of memory and disk space. When an external finite magnetic field is ...

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Complex numbers are an extension of the more conventional real numbers that we use in everyday life. They provide a rich structure that helps with finding solutions of equations. Complex numbers are ...