Gazit Doron, Quaglioni Sofia, Navrátil Petr
Institute for Nuclear Theory, University of Washington, Seattle, Washington 98195, USA.
Phys Rev Lett. 2009 Sep 4;103(10):102502. doi: 10.1103/PhysRevLett.103.102502. Epub 2009 Sep 1.
The chiral low-energy constants c(D) and c(E) are constrained by means of accurate ab initio calculations of the A = 3 binding energies and, for the first time, of the triton beta decay. We demonstrate that these low-energy observables allow a robust determination of the two undetermined constants, a result of the surprising fact that the determination of c(D) depends weakly on the short-range correlations in the wave functions. These two- plus three-nucleon interactions, originating in chiral effective field theory and constrained by properties of the A = 2 system and the present determination of c(D) and c(E), are successful in predicting properties of the A = 3 and 4 systems.
手征低能常数(c(D))和(c(E))通过对(A = 3)束缚能以及首次对氚核(\beta)衰变进行精确的从头计算来加以约束。我们证明，这些低能可观测量能够对两个未确定的常数进行可靠的确定，这是由于一个令人惊讶的事实，即(c(D))的确定对波函数中的短程关联依赖性较弱。源自手征有效场论并受(A = 2)系统的性质以及当前对(c(D))和(c(E))的确定所约束的这些两体加三体核相互作用，成功地预测了(A = 3)和(4)系统的性质。
