Coherent State Transforms and the Weyl Equation in Clifford Analysis
| Autor: | João P. Nunes, José Mourão, Tao Qian |
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| Rok vydání: | 2016 |
| Předmět: |
Pure mathematics
010102 general mathematics Clifford algebra Hilbert space FOS: Physical sciences Statistical and Nonlinear Physics Clifford analysis Mathematical Physics (math-ph) 01 natural sciences Measure (mathematics) Functional Analysis (math.FA) Mathematics - Functional Analysis symbols.namesake Square-integrable function 0103 physical sciences symbols FOS: Mathematics Orthonormal basis 010307 mathematical physics Isomorphism 0101 mathematics Weyl equation Mathematical Physics Mathematics |
| DOI: | 10.48550/arxiv.1607.06233 |
| Popis: | We study a transform, inspired by coherent state transforms, from the Hilbert space of Clifford algebra valued square integrable functions $L^2({\mathbb R}^m,dx)\otimes {\mathbb C}_{m}$ to a Hilbert space of solutions of the Weyl equation on ${\mathbb R}^{m+1}= {\mathbb R} \times {\mathbb R}^m$, namely to the Hilbert space ${\mathcal M}L^2({\mathbb R}^{m+1},d\mu)$ of ${\mathbb C}_m$-valued monogenic functions on ${\mathbb R}^{m+1}$ which are $L^2$ with respect to an appropriate measure $d\mu$. We prove that this transform is a unitary isomorphism of Hilbert spaces and that it is therefore an analog of the Segal-Bargmann transform for Clifford analysis. As a corollary we obtain an orthonormal basis of monogenic functions on ${\mathbb R}^{m+1}$. We also study the case when ${\mathbb R}^m$ is replaced by the $m$-torus ${\mathbb T}^m.$ Quantum mechanically, this extension establishes the unitary equivalence of the Schr\"odinger representation on $M$, for $M={\mathbb R}^m$ and $M={\mathbb T}^m$, with a representation on the Hilbert space ${\mathcal M}L^2({\mathbb R} \times M,d\mu)$ of solutions of the Weyl equation on the space-time ${\mathbb R}\times M$. |
| Databáze: | OpenAIRE |
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