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摘要
En 中文
In this work, higher-derivative corrections of the non-linear sigma model of both even and odd intrinsic-parity sectors are systematically studied, focusing on ordered amplitudes of flavor scalars in massless limit. It should correspond to a theory known as chiral perturbation theory (ChPT) without external sources and with only single-trace operators. We briefly overview its formal development and apply new S-matrix methods to its amplitude constructions. The bottom-up analysis of the tree-level amplitudes of different orders and multiplicities focuses on the formal structure of general ChPT. Possible theoretical simplifications based on the Kleiss-Kuijf and Bern-Carrasco-Johansson relations are presented. Finally, in the same context, the comparison with the so-called Z-function, which is connected with string theory, is also discussed.
Keyword:
Effective Field Theories
Scattering Amplitudes
Sigma Models
String Duality
期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
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New flavor-kinematics dualities and extensions of nonlinear sigma models非线性sigma模型的新味运动学对双性和扩展.png)
PHYSICS LETTERS B.png)
OAAI
PHYSICS LETTERS BIF4.5
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