Physical Running of Couplings in Quadratic Gravity

被引：6
|
作者：
Buccio, Diego [1 ,2 ]
Donoghue, John F. [3 ]
Menezes, Gabriel [4 ]
Percacci, Roberto [1 ,2 ]
机构：
[1] Scuola Int Super Studi Avanzati, Via Bonomea 265, I-34134 Trieste, Italy
[2] INFN, Sez Trieste, Trieste, Italy
[3] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA
[4] Univ Estadual Paulista, Inst Fis Teor, Rua Doutor Bento Teobaldo Ferraz 271 Bloco 2, BR-01140070 Sao Paulo, Brazil
来源：
PHYSICAL REVIEW LETTERS | 2024年 / 133卷 / 02期
基金：
巴西圣保罗研究基金会; 美国国家科学基金会;
关键词：
FREEDOM;
D O I：
10.1103/PhysRevLett.133.021604
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We argue that the well-known beta functions of quadratic gravity do not correspond to the physical dependence of scattering amplitudes on external momenta, and derive the correct physical beta functions. Asymptotic freedom turns out to be compatible with the absence of tachyons.
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页数：5
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