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arXiv 2211.03319math.OAmath.DGquant-ph
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几乎可换谱三元组和旋量丛上的量子扩散

Quantum diffusion on almost commutative spectral triples and spinor bundles

Sita Gakkhar

摘要:

基于Cacic [10]对几乎可换谱三元组作为Clifford模丛的刻画可以推广到Dirac丛的自同态代数,其中几何Dirac算子通过扰动与谱三元组的Dirac算子相关联,利用旋量研究了由连通Laplacian和Dirac及Kostant的三次Dirac Laplacian生成的热半群的完全正性问题C *-Dirichlet形式。利用Sinha和Goswami [34]的构造,证明了旋量丛的自同态代数上的几何热半群是量子动力学半群,并建立了约化齐性空间上旋量丛上的热半群的协变量子随机流的存在性.

英文摘要:

Based on the observation that Cacic [10]'s characterization of almost commutative spectral triples as Clifford module bundles can be pushed to endomorphim algebras of Dirac bundles, with the geometric Dirac operator related to the Dirac operator of the spectral triple by a perturbation, the question of complete positivity of the heat semigroups generated by connection laplacian and Dirac and Kostant's cubic Dirac laplacians is approached using spin geometry and C *-Dirichlet forms. The geometric heat semigroups for on endomorphosm algebras of spinor bundles are shown to be quantum dynamical semigroups and the existence of covariant quantum stochastic flows associated to the heat semigroups on spinor bundles over reductive homogeneous spaces is established using the construction of Sinha and Goswami [34].

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