论文标题
异载体配对诱导的四重奏凝结力
Quartet condensation induced by the isovector pairing force
论文作者
论文摘要
研究了四重奏凝结现象以均匀的n = z $系统的等值器配对哈密顿配对的基础状态。为此，我们遵循地面状态从不受干扰的政权发展到集体对形式主义的强烈互动。这些对是由两种粒子与isospin $ t = 1 $的两个粒子的对角线化产生的。发现基态从独特的$ t = 0 $四重奏的产物迅速发展，每个四重奏组由上述两个对形成，到仅用对应于最低能量的对对应的相同四重奏的冷凝物。这一发现建立了确切基态的复杂结构与四重奏冷凝模型的简单近似方案之间的联系。在该四重奏凝结的基础上，该机制是相同的。
The phenomenon of quartet condensation in the ground state of an isovector pairing Hamiltonian for an even-even $N=Z$ system is investigated. For this purpose we follow the evolution of the ground state from an unperturbed regime up to a strongly interacting one in a formalism of collective pairs. These pairs are those resulting from the diagonalization of the pairing Hamiltonian in a space of two particles coupled to isospin $T=1$. The ground state is found to rapidly evolve from a product of distinct $T=0$ quartets, each one formed by two of the above pairs, to a condensate of identical quartets built only with the pair corresponding to the lowest energy. This finding establishes a link between the complicated structure of the exact ground state and the simple approximation scheme of the Quartet Condensation Model. The mechanism at the basis of this quartet condensation turns out to be the same which is responsible for the development of a pair condensate in the ground state of a like-particle pairing Hamiltonian.
