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arXiv 1801.02582hep-thgr-qc
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非定域场论的连续模

Continuum Modes of Nonlocal Field Theories

Mehdi Saravani

摘要:

在arXiv:1502.01655和arXiv:1411.6513中介绍了一类非定域洛伦兹量子场论,其中d 'Alembertian算子$\Box$被d' Alembertian算子的非解析函数$f(\Box)$代替。这是受到因果集程序的启发,在因果集程序中,这样的演化作为因果集上波动方程的连续极限而出现。这些理论的光谱包含了大量激发的连续性。这也许是导致独特/有趣的现象学的最重要的特征。本文深入研究了连续质量模的性质。我们推导出这些理论的路径积分公式。同时,这个推导引入了一个对偶图像的局域场,它清楚地显示了如何连续质量模式的非局域场相互作用。原则上,对偶图提供了一条扩展到标量场之外并解决重整化问题的途径。

英文摘要:

A class of nonlocal Lorentzian quantum field theories is introduced in arXiv:1502.01655 and arXiv:1411.6513, where the d'Alembertian operator $\Box$ is replaced by a non-analytic function of the d'Alembertian, $f(\Box)$. This is inspired by the Causal Set program where such an evolution arises as the continuum limit of a wave equation on causal sets. The spectrum of these theories contains a continuum of massive excitations. This is perhaps the most important feature which leads to distinct/interesting phenomenology. In this paper, we study properties of the continuum massive modes in depth. We derive the path integral formulation of these theories. Meanwhile, this derivation introduces a dual picture in terms of local fields which clearly shows how continuum massive modes of the nonlocal field interact. The dual picture, in principle, provides a path to extension beyond scalar fields and addressing the issue of renormalization.

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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