arXiv subjects

Wanqing Cheng

Publications and source records attributed to Wanqing Cheng.

2 recordsLinked to original sources

arXiv2025

The higher spin $\Pi$-operator in Clifford analysis

Rarita-Schwinger fields are solutions to the relativistic field equation of spin-$3/2$ fermions in four dimensional flat spacetime, which are important in supergravity and superstring theories. Bure\v s et al. generalized it to arbitrary spin $k/2$ in 2002 in the context of Clifford algebras. In this article, we introduce the higher spin $\Pi$-operator related to the Rarita-Schwinger operator. Further, we investigate norm estimates, mapping properties and the adjoint operator of the higher spin $\Pi$-operator. As an application, a higher spin Beltrami equation is introduced, and existence and uniqueness of solutions to this higher spin Beltrami equation is established by the norm estimate of the higher spin $\Pi$-operator.

math.CV↗

arXiv2016

Spherical $Π$-type Operators in Clifford Analysis and Applications

The $Π$-operator (Ahlfors-Beurling transform) plays an important role in solving the Beltrami equation. In this paper we define two $Π$-operators on the n-sphere. The first spherical $Π$-operator is shown to be an $L^2$ isometry up to isomorphism. To improve this, with the help of the spectrum of the spherical Dirac operator, the second spherical $Π$ operator is constructed as an isometric $L^2$ operator over the sphere. Some analogous properties for both $Π$-operators are also developed. We also study the applications of both spherical $Π$-operators to the solution of the spherical Beltrami equations.

math.CV↗