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arXiv 2012.09029hep-th
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缩放对应机制

Scaling-correspondence mechanism

Jackie C. H. Liu

摘要:

20世纪70年代,Wilson揭示了重整化与有效拉格朗日量标度的深刻联系。波尔钦斯基进一步证明了这种联系隐含着微扰场论的重整化。我们通过有效拉格朗日量的标度变换的扩展--在低能有效场论(EFT)的量子场和它的标度对应(裸)模型之间引入场映射,发展了该机制。我们用实标量$ϕ^4$模型研究了这一机制。我们发现,如果EFT的势存在$N$级的自相互作用,那么对于EFT的同一对称群,最多存在$N-1$标度对应的模型。然后,我们研究了宇宙学的潜在应用,通过将该机制应用于暴胀范式。我们发现由实标量$ϕ^4$ EFT生成的暴胀模型是幂律暴胀模型。我们简要地检查了生成的暴胀模型与暴胀的典型观测约束的一致性-谱指数($n_{s}$),e-折叠,和张量/标量比($r$)。

英文摘要:

In 1970s, Wilson shown the deep connection of renormalization and scaling of the effective Lagrangian. Polchinski further proved that such connection implied renormalizability of perturbative field theory. We develop the mechanism by an extension of scaling transformation of the effective Lagrangian - introducing a field-map between the quantum fields of the low-energy effective field theory (EFT) and its' scaling-corresponding (bare) model. We study the mechanism through real scalar $ϕ^4$ model. We found if there is a self-interaction of order $N$ from the EFT's potential, there are (at most) $N-1$ scaling-corresponding models for the same symmetry group of the EFT. We then study the potential application for cosmology by applying the mechanism to inflation paradigm. We found the generated inflation model (from the real scalar $ϕ^4$ EFT) is the power-law inflation model. We briefly check the consistency of the generated inflation model against the inflation's typical observational constraints - spectral index ($n_{s}$), e-folds, and tensor/scalar ratio ($r$).

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