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Related papers: Effect of Tensor Correlations on Gamow-Teller Stat…

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The symmetry-constrained response tensors on transport, optical, and electromagnetic effects are of central importance in condensed matter physics because they can guide experimental detections and verify theoretical calculations. These…

Materials Science · Physics 2025-09-29 Rui-Chun Xiao , Yuanjun Jin , Zhi-Fan Zhang , Zi-Hao Feng , Ding-Fu Shao , Mingliang Tian

We present the evolution of the shell structure of nuclei in Hartree-Fock calculations using Skyrme's density-dependent effective nucleon-nucleon interaction. The role of the tensor part of the Skyrme interaction to the Hartree-Fock…

Nuclear Theory · Physics 2008-11-26 D. M. Brink , Fl. Stancu

Using the Beyond-Skyrme-Hartree-Fock approach with various Skyrme-type $NN$ effective interactions, we explore the large spectroscopic quadrupole moment $Q_s$ of the first excited $2_{1}^{+}$ state in $^{20}$Ne. Our calculated…

Nuclear Theory · Physics 2025-07-09 Xue Huai-Tong , Qiu Suo , Chen C. F. , Chen Q. B. , Zhou Xian-Rong , Ren Zhongzhou

The evolution of the energy difference between the neutron states $1i_{13/2}$ and $1h_{9/2}$ in the $N=82$ isotones and that between the proton states $1h_{11/2}$ and $1g_{7/2}$ in the $Z = 50$ isotopes are investigated within the framework…

Nuclear Theory · Physics 2021-07-27 Zhiheng Wang , Tomoya Naito , Haozhao Liang

Within the relativistic Brueckner-Hartree-Fock theory in the full Dirac space, the tensor-force effects on infinite nuclear matter are elucidated by subtracting the matrix elements of tensor forces from the realistic nucleon-nucleon…

Nuclear Theory · Physics 2024-06-04 Sibo Wang , Hui Tong , Chencan Wang , Qiang Zhao , Peter Ring , Jie Meng

[Background] While the tensor interaction has been shown to significantly affect the nuclear structure of exotic nuclei, its influence on nuclear reactions has only recently been investigated. The primary reason for this neglect is the fact…

Nuclear Theory · Physics 2019-11-27 K. Godbey , Lu Guo , A. S. Umar

Spectrum shape measurements in nuclear $\beta$ decay can be used to test physics beyond the Standard Model with results being complementary to high-energy collider experiments. In particular, Beyond Standard Model sensitivity of the weak…

Nuclear Experiment · Physics 2024-04-05 L. De Keukeleere , D. Rozpedzik , N. Severijns , K. Bodek , L. Hayen , K. Lojek , M. Perkowski , S. Vanlangendonck

Background: The tensor interaction is known to play an important role in the nuclear structure studies of exotic nuclei. However, most microscopic studies of low-energy nuclear reactions neglect the tensor force, resulting in a lack of…

Nuclear Theory · Physics 2018-12-19 Lu Guo , K. Godbey , A. S. Umar

We examine isovector and isoscalar neutron-proton correlations in an exactly solvable model based on the algebra SO(8). We look particularly closely at Gamow-Teller strength and double beta decay, both to isolate the effects of the two…

Nuclear Theory · Physics 2008-11-26 J. Engel , S. Pittel , P. Vogel , M. Stoitsov , J. Dukelsky

We obtain in closed form the probability distribution for individual measurements of the stress-energy tensor of two-dimensional conformal field theory in the vacuum state, smeared in time against a Gaussian test function. The result is a…

Quantum Physics · Physics 2011-08-15 Christopher J. Fewster , L. H. Ford , Thomas A. Roman

Thermoelectric (TE) properties of a single nanowire (NW) are investigated in a microlab which allows the determination of the Seebeck coefficient S and the conductivity {\sigma}. A significiant influence of the magnetization of a 70 nm…

Mesoscale and Nanoscale Physics · Physics 2011-11-09 Rüdiger Mitdank , Martin Handwerg , Corinna Steinweg , William Töllner , Mihaela Daub , Kornelius Nielsch , Saskia F. Fischer

We study the constraints imposed by the Hadamard condition on the two-point function of local states of a scalar quantum field conformally coupled to a gravitational background. We propose a method to assign a stress tensor to the…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Hadi Salehi , Parvin Moyassari , Reza Rashidi

The relativistic Hartree approximation predicts a deep attractive potential for antinucleon, which largely reduce the threshold energies of the nucleon-antinucleon (N-Nbar) production. This effect has played an important role to explain the…

Nuclear Theory · Physics 2009-01-06 Tomoyuki Maruyama

In this paper, we study the power iteration algorithm for the spiked tensor model, as introduced in [44]. We give necessary and sufficient conditions for the convergence of the power iteration algorithm. When the power iteration algorithm…

Statistics Theory · Mathematics 2020-12-29 Jiaoyang Huang , Daniel Z. Huang , Qing Yang , Guang Cheng

The formalism of the linear response for the Skyrme energy density functional including tensor terms derived in articles [1,2] for nuclear matter is applied here to the case of pure neutron matter. As in article [2] we present analytical…

Nuclear Theory · Physics 2015-06-05 A. Pastore , M. Martini , V. Buridon , D. Davesne , K. Bennaceur , J. Meyer

In this work we study the effect of the nuclear tensor force on properties related with deformation. We focus on isotopes in the Mg, Si, S, Ar, Sr and Zr chains within the Hartree-Fock-Bogoliubov theory using the D1ST2a Gogny interaction.…

Nuclear Theory · Physics 2016-05-18 Rémi N. Bernard , Marta Anguiano

Neutron and proton densities of doubly-closed shell nuclei 40Ca, 48Ca and 208Pb are studied based on a Hartree-Fock model with SAMi, SAMi-J27 and SAMi-T energy density functionals (EDFs). The ground state correlations (GSC) induced by…

Nuclear Theory · Physics 2022-08-31 F. Minato , H. Sagawa , S. Yoshida

Nuclear $\beta$-decay in magic nuclei is investigated, taking into account the coupling between particle and collective vibrations,on top of self-consistent random phase approximation calculations based on Skyrme density functionals. The…

Nuclear Theory · Physics 2015-04-16 Yifei Niu , Zhongming Niu , Gianluca Colo , Enrico Vigezzi

We present new, tight, constraints on the cosmological background of gravitational waves (GWs) using the latest measurements of CMB temperature and polarization anisotropies provided by the Planck, BICEP2 and Keck Array experiments. These…

Cosmology and Nongalactic Astrophysics · Physics 2016-03-23 Giovanni Cabass , Luca Pagano , Laura Salvati , Martina Gerbino , Elena Giusarma , Alessandro Melchiorri

Weak Gamow-Teller (GT) responses for low-lying states in ${}^{71}\mathrm{Ga}$ are crucial for studying low-energy solar neutrinos and the Ga anomaly, i.e., the possible transition to the sterile state. The responses for the ground state,…

Nuclear Theory · Physics 2025-04-17 Yoritaka Iwata , Hiroyasu Ejiri , Shahariar Sarkar