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Pandya theorem provides a theoretical framework for connecting the energy levels in ''jj'' coupling of a nucleon-nucleon and nucleon-hole system. It is also referred to as Pandya Transformation or Pandya Relation in literature. It provides a very useful tool for extending shell model calculations across shells, for systems involving both particles and holes. The Pandya theorem is a good illustration of the richness of information forthcoming from a judicious use of subtle symmetry principles connecting vastly different sectors of nuclear systems. The Pandya transformation, which involves angular momentum re-coupling coefficients, can be used to deduce one-particle one-hole (ph) matrix elements. By assuming the wave function to be ”pure” (no configuration mixing), Pandya transformation could be used to set an upper bound to the contributions of 3-body forces to the energies of nuclear states. == History == It was first published in 1956 as follows: Nucleon-Hole Interaction in ''jj'' Coupling S.P. Pandya, Phys. Rev. 103, 956 (1956). Received 9 May 1956 A theorem connecting the energy levels in ''jj'' coupling of a nucleon-nucleon and nucleon-hole system is derived, and applied in particular to Cl38 and K40. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pandya theorem」の詳細全文を読む スポンサード リンク
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