Relativistic beams of heavy ions interacting with various nuclear targets allow to study a broad range of problems starting from nuclear equation of state to the traditional nuclear structure. Some questions which were impossible to answer heretofore -- can be addressed nowadays by using inverse kinematics. These includes the structure of short-lived nuclei and the precision study of exclusive channels with production of residual nuclei in certain quantum states. Theoretical understanding such processes is so far based on factorization models which combine the single-step amplitude of the reaction on a bound nucleon or nuclear cluster with a certain wave function of its relative motion with respect to the residual nucleus. The nuclear structure information is encoded in the spectroscopic amplitude, calculable within nuclear many-body theories. In this work, we use for this purpose the translationally-invariant shell model with configuration mixing and demonstrate that it successfully reproduces the single-differential and integrated cross sections of the quasielastic proton knockout, $^{12}\mbox{C}(p,2p)^{11}\mbox{B}$, with outgoing $^{11}$B in the ground state and low-lying excited states measured at GSI at 400 MeV/nucleon.
Microscopic description of translationally-invariant core+N+N overlap functions
我们推导出表达式的核心+ N + N重叠积分从微观波函数从头算无核壳模型。这些重叠积分对应于三体通道形状因子,可以用来研究多体系统成团成一个核加两个核子。我们考虑的情况下,当复合系统和核心描述的斯莱特行列式,谐振子基地,我们展示了如何删除虚假的质量质心组件,以准确地推导出几何不变的重叠积分。我们特别研究Borromean 6He核使用现实的手核相互作用,我们证明,在这个系统中观察到的集群是泡利聚焦效应。包含三体力对这种结构的影响很小。此外,我们讨论了光谱因子的绝对归一化问题,我们发现它大于1。作为这项研究的一部分,我们还进行外推的基态观测值和调查的依赖关系,这些结果的分辨率尺度的相互作用。
Behavior of the continuum coupling correlation energy in the vicinity of the particle emission threshold -- Gamow shell model study
Louisiana State University(路易斯安那州立大学);Grand Accélérateur National d’Ions Lourds (GANIL), CEA/DSM - CNRS/IN2P3(大离子重离子加速器(GANIL),CEA/DSM - CNRS/IN2P3);Institute of Modern Physics, Chinese Academy of Sciences(中国科学院近代物理研究所);University of Chinese Academy of Sciences(中国科学院大学)
Interplay between final-state nucleon distortion, nuclear transparency and intranuclear cascade models in neutrino event generators
Universidad de Sevilla(塞维利亚大学);University of Washington(华盛顿大学);Kyoto University(京都大学);École polytechnique, IN2P3-CNRS, Laboratoire Leprince-Ringuet(巴黎综合理工学院,法国国家科学研究中心IN2P3-CEA勒普林斯-里格特实验室);Ghent University(根特大学);Universidad Complutense de Madrid and IPARCOS, CEI Moncloa(马德里康普顿斯大学及IPARCOS、蒙克洛阿卓越国际中心)
Particle-Hole Mirror Symmetries around the Half-Filled Shell: The Quantum Numbers and Algebraic Structure of Composite Fermions
分数量子霍尔效应的复合费米子(CF)被描述为电子和涡旋旋量的球形产物,由基本的L=1/2阶梯算符排列而成,使得旋量角动量Le和Lv最大。我们把CF的量子数确定为(L_e L_v)L中的角动量L、它的磁投影m_L、电子数N(L_v=(N-1)/2)和磁ν自旋m_v =L_e-L_v。平移不变的量子态是通过用它们各自的CF填充p个子壳层形成的,对于固定的L_e和L_v,按照L的顺序从最低允许值L=(N-1)/2开始,|m_v|.我们证明了这种波函数具有完全等价的分层形式。在N保持不变的情况下,π HE态可以被分组为关于m_v =0镜像对称的ν-自旋多重态。相对于这个真空的电子粒子-空穴共轭被确定为与相同N但不同填充物ν= p/(2 p +1)和p/(2 p-1)的NHE态相关的镜像对称性。或者,镜像对称的ν-自旋多重态可以被构造,其中磁场强度保持固定:价态是电子粒子-涡旋空穴激发。粒子-空穴对称性--将填充ν=p/(2 p +1}的N粒子的双态与填充{p+1)/(2 p +1}的$\bar{N}$粒子态联系起来--被证明是与电子-涡旋交换等价的。在这种结构中,高密度态的$\bar{N}$ -N CF占据了额外的零模子壳层。我们将这种结构与超对称量子力学中常见的CF泡利哈密顿量联系起来,我们表明它是等谱的,在ν-自旋升降算符中是二次的,并且是四重简并的。在线性化时,它采取类似于整数量子霍…