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arXiv 0905.4857hep-th
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作为有效场论的量子标度不变模型

Quantum scale-invariant models as effective field theories

M. E. Shaposhnikov, F. V. Tkachov

摘要:

我们解决的问题是,在[1]中引入的量子标度不变理论是否是可重整的,或者在普朗克标度$M_P$以下起有效的有效场论的作用。我们表明,从两个循环水平的重整化过程需要引进的反条款的结构不同于那些在初始拉格朗日,使这些理论非重整化,因此非预测以上$M_P$。尽管不可重整化,这些理论的吸引人的特点,与稳定的希格斯质量对辐射校正和小的宇宙学常数,保持不变。

英文摘要:

We address the question of whether the quantum scale-invariant theories introduced in [1] are renormalizable or play the role of effective field theories that are valid below the Planck scale $M_P$. We show that starting from two-loop level the renormalization procedure requires introduction of counter-terms with structures different from those in the initial Lagrangian, making these theories non-renormalizable and therefore non-predictive above $M_P$. Despite non-renormalizability, the attractive features of these theories, associated with the stability of the Higgs mass agains radiative corrections and the smallness of the cosmological constant, remain intact.

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