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arXiv math-ph/0304005math-phhep-thmath.MPmath.OA
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超选择扇区理论真空扇区的基本性质

Essential Properties of the Vacuum Sector for a Theory of Superselection Sectors

Giuseppe Ruzzi

摘要:

作为DHR分析的推广,在参考表示不满足谱条件的情况下,研究了超选择扇区。考虑在四维闵可夫斯基时空中的局部可观测量的网络,我们表明,它是可以关联到一组表示,这是一个参考一个满足Haag对偶,对称张量$\mathrm{C}^*$范畴$\Bim$双模的网络,与子波和直和的局部激发。共轭的存在性进行了研究,引入一个等价的配方的理论与可观察网的预层。这使我们能够找到,在假设的局部代数的参考表示是适当的无限,必要和充分条件的共轭存在。此外,我们提出了几个结果,建议如何上述假设的参考表示可以被认为是必不可少的,也在弯曲时空的理论的情况下。

英文摘要:

As a generalization of DHR analysis, the superselection sectors are studied in the case of absence of the spectrum condition for the reference representation. Considered a net of local observables in the 4-dimensional Minkowski spacetime, we show that it is possible to associate to a set of representations, that are local excitations of a reference one fulfilling Haag duality, a symmetric tensor $\mathrm{C}^*$-category $\Bim$ of bimodules of the net, with subobjects and direct sums. The existence of conjugates is studied introducing an equivalent formulation of the theory in terms of the presheaf associated with the observable net. This allows us to find, under the assumption that the local algebras in the reference representation are properly infinite, necessary and sufficient conditions for the existence of conjugates. Moreover, we present several results that suggest how the mentioned assumption on the reference representation can be considered essential also in the case of theories in curved spacetimes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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