complex argument integrals of trigonometric and hyperbolic functions (Trac #903) #1430 New issue Closed ...

leads to RuntimeError: Complex integrals not supported. The problem has been discussed here, but I have not been able to trace its solution. It's particularly unclear how the RCCSD is supposed to work ...

Imaginary time is often used in quantum tunnelling calculations. This article advocates a conceptually sounder alternative: complex lapse. In the ``3+1'' action for the Einstein gravitational field ...

Abstract: In this paper the fuzzy measure and fuzzy measurable functions are further extended to broader complex fuzzy sets, the concepts of complex set-valued simple function and generalized complex ...

We prove that the 2-hermitean matrix model and the complex-matrix model obey the same loop equations, and as a byproduct, we find a formula for Itzykzon-Zuber's type integrals over the unitary group.

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 ...

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 ...