ANGULAR MOMENTUM DECOMPOSITION OF CHIRAL MULTIPLETS IN FRONT FORM

作者：Gomez Rocha Maria^*

来源：International Journal of Modern Physics A, 2012, 27(28): 1250163.

DOI：10.1142/S0217751X12501631

• Front form
• Poincare invariance
• chiral multiplets

In this paper, we derive the unitary transformation that relates the q (q) over bar chiral basis {R; I J(PC)} to the {I; (2S+1) L-J}-basis in a front-form framework. From the most general expression for the Clebsch-Gordan coefficients of the Poincare group one can see that the chiral limit brings the angular momentum coupling into a simple form that permits the relation in terms of SU(2) Clebsch-Gordan coefficients. We demonstrate that such a transformation is identical to the one obtained for canonical spin in the instant form.

• 出版日期2012-11-10