弯曲卷积:构造量子场论的新工具
Warped Convolutions: A Novel Tool in the Construction of Quantum Field Theories
摘要:
最近,Grosse和Lechner为非相互作用的量子场论引入了一种新的变形方法,产生了具有非平凡散射矩阵的楔形局域量子场的有趣例子。在本文中,我们通过引入翘曲卷积的概念,将这一过程扩展到量子场论的一般框架中:给定一个理论,这种构造提供了在类空距离上交换的楔形局域算子,在庞加莱群的基本表示下协变变换,并允许散射理论。相应的散射矩阵是非平凡的,但打破了洛伦兹对称性,尽管变形运营商的协方差和楔形局域性。
英文摘要:
Recently, Grosse and Lechner introduced a novel deformation procedure for non-interacting quantum field theories, giving rise to interesting examples of wedge-localized quantum fields with a non-trivial scattering matrix. In the present article we outline an extension of this procedure to the general framework of quantum field theory by introducing the concept of warped convolutions: given a theory, this construction provides wedge-localized operators which commute at spacelike distances, transform covariantly under the underlying representation of the Poincare group and admit a scattering theory. The corresponding scattering matrix is nontrivial but breaks the Lorentz symmetry, in spite of the covariance and wedge-locality properties of the deformed operators.
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