三核子系统：三核子力的不可约和可约贡献
Three-nucleon system: Irreducible and reducible contributions of the three-nucleon force
摘要：
在动量空间中求解了耦合道哈密顿量的三核子束缚和散射方程。哈密顿量将希尔伯特空间的纯核子扇区与其中一个核子被激发到$Δ$同量异位素的扇区耦合起来。相互作用由不可约的两重子势和不可约的三重子势组成。计算只保留了三重子不可约势中的纯核子势。耦合通道两重子势对三核子力产生额外的可约贡献。利用屏蔽和重整化方法，计算了两个质子之间的库仑相互作用。研究了三核子力对核子-氘弹性散射和破裂的束缚态能量和可观量的影响。
英文摘要：
The three-nucleon bound and scattering equations are solved in momentum space for a coupled-channel Hamiltonian. The Hamiltonian couples the purely nucleonic sector of Hilbert space with a sector in which one nucleon is excited to a $Δ$ isobar. The interaction consists of irreducible two-baryon and irreducible three-baryon potentials. The calculation keeps only the purely nucleonic one among the irreducible three-baryon potentials. The coupled-channel two-baryon potential yields additional reducible contributions to the three-nucleon force. The Coulomb interaction between the two protons is included using the method of screening and renormalization. Three-nucleon force effects on the bound-state energies and on observables of elastic nucleon-deuteron scattering and breakup are studied.
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