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arXiv quant-ph/0512190quant-ph
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量子场的弱线性

Weakened linearity for quantum fields

Peter Morgan

摘要:

目前还没有怀特曼公理的交互模型,这表明这些公理过于严密。这里提出了一个弱化量子场的线性,代数仍然是线性的,但量子场不再需要是回火分布,允许显式的相互作用量子场模型。相互作用的量子场在这个意义上应该被理解为非线性量子场,因为一组有效场论编码了对测量的能量尺度的依赖性--这是测试函数的一个非平凡性质--所以关联函数在传统形式中是测试函数的隐式非线性函数。在局域量子物理学中,这里构造的代数模型不满足可加性。作为例子,构造了量子化电磁场的有限非线性变形。

英文摘要:

There are still no interacting models of the Wightman axioms, suggesting that the axioms are too tightly drawn. Here a weakening of linearity for quantum fields is proposed, with the algebra still linear but with the quantum fields no longer required to be tempered distributions, allowing explicit interacting quantum field models. Interacting quantum fields should be understood to be nonlinear quantum fields in this sense, because a set of effective field theories encodes a dependence on the energy scale of measurement -- which is a nontrivial property of the test functions -- so that correlation functions are implicitly nonlinear functions of test functions in the conventional formalism. In Local Quantum Physics terms, the algebraic models constructed here do not satisfy the additivity property. Finite nonlinear deformations of quantized electromagnetism are constructed as examples.

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