Renormalization of Lorentz violating theories

被引:123
作者
Anselmi, Damiano [1 ,2 ]
Halat, Milenko [1 ,2 ]
机构
[1] Univ Pisa, Dipartimento Fis Enrico Fermi, I-56127 Pisa, Italy
[2] Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy
来源
PHYSICAL REVIEW D | 2007年 / 76卷 / 12期
关键词
D O I
10.1103/PhysRevD.76.125011
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We classify the unitary, renormalizable, Lorentz violating quantum field theories of interacting scalars and fermions, obtained improving the behavior of Feynman diagrams by means of higher space derivatives. Higher time derivatives are not generated by renormalization. Renormalizability is ensured by a "weighted power-counting" criterion. The theories contain a dimensionful parameter Lambda(L), yet a set of models are classically invariant under a weighted scale transformation, which is anomalous at the quantum level. Formulas for the weighted trace anomaly are derived. The renormalization-group properties are studied.
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页数:14
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