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arXiv 0907.1930nucl-th
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核的手征对称有效场论

Chirally symmetric effective field theory for nuclei

Andrzej Staszczak

摘要:

本文讨论了洛伦兹不变核拉格朗日量FST。FST拉格朗日量是根据有效场论导出的,并且表现出手征对称性$SU(2)_L\times SU(2)_R$的非线性实现。相关的自由度是核子、π介子和低位的非戈德斯通玻色子:等势标量($σ$)和矢量($ω$)介子,以及等矢量($ρ$)介子。拉格朗日量中的项通过应用Georgi的朴素量纲分析和自然性条件来组织。因此,理论上所有的耦合常数都是无量纲的,且为1阶。

英文摘要:

The Lorentz-invariant nuclear lagrangian of Furnstahl, Serot and Tang (FST) is discussed. The FST lagrangian is derived in terms of an effective field theory and exhibits a nonlinear realization of chiral symmetry $SU(2)_L\times SU(2)_R$. The relevant degrees of freedom are nucleons, pions and the low-lying non-Goldstone bosons: isoscalar scalar ($σ$) and vector ($ω$) mesons, and isovector vector ($ρ$) mesons. The terms in the lagrangian are organized by applying Georgi's naive dimensional analysis and naturalness condition. As a consequence all coupling constants in theory are dimensionless and of order unity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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