Chirally symmetric effective field theory for nuclei

Details Chirally symmetric effective field theory for nuclei Chirally symmetric effective field theory for nuclei

2009-07-10

arxiv.org/abs/0907.1930v1

Physics

Nuclear Physics

Nuclear Theory

REVTEX 4, 14 pages

Scientific paper

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 ($\sigma$) and vector ($\omega$) mesons, and isovector vector ($\rho$) 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.

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