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We have studied the low lying magnetic spectra of 12C, 16O, 40Ca, 48Ca and 208Pb nuclei within the Random Phase Approximation (RPA) theory, finding that the description of low-lying magnetic states of doubly-closed-shell nuclei imposes…

核理论 · 物理学 2009-12-31 V. De Donno , G. Co' , C. Maieron , M. Anguiano , A. M. Lallena , M. Moreno Torres

We consider a system of two interacting particles with like but unequal charges in a magnetic field in the planar geometry. We construct a complete basis of states compatible with both the axial symmetry and magnetic translations. The basis…

介观与纳米尺度物理 · 物理学 2007-06-12 A. B. Dzyubenko , A. R. Todd

In the interaction of two electric quadrupoles, there is at short distances a contact term proportional to the second derivative of a delta function. This contact term contributes to the hyperfine splitting of bound states of two particles…

高能物理 - 唯象学 · 物理学 2014-11-18 G. Karl , V. A. Novikov

By means of numerical simulations, we explore possible effects of a special interparticle interaction potential which is a function of external and internal conditions of graphene-like systems. In addition to the electromagnetic…

介观与纳米尺度物理 · 物理学 2016-11-21 José Abdalla Helayël-Neto , Elena Konstantinova , Ricardo Spagnuolo Martins

It has been shown that for the highly-correlated d4 electronic system the spin-orbit interactions produce, even in case of the cubic crystal-field interactions, a singlet ground state. Its magnetic moment grows rapidly with the applied…

强关联电子 · 物理学 2008-10-08 R. J. Radwanski , Z. Ropka

Circularly-polarized magneto-photoluminescence (magneto-PL) technique has been applied to investigate Zeeman effect in InAs/InGaAs/InAlAs quantum wells (QWs) in Faraday geometry. Structures with different thickness of the QW barriers have…

We present calculations of the g factors for the lower conductance steps of 3D hole quantum wires. Our results prove that the anisotropy with magnetic field orientation, relative to the wire, originates in the Rashba spin-orbit coupling. We…

介观与纳米尺度物理 · 物理学 2011-10-20 M. Magdalena Gelabert , Llorens Serra

Magnetic diffraction patterns which exhibit more than one discrete set of symmetry related peaks have been explained by the simultaneous coexistence of more than one magnetic polarisation and propagation vector, k, in the scattering…

其他凝聚态物理 · 物理学 2007-05-23 E. Blackburn , N. Bernhoeft

We generalize the mechanical interpretation of the forces between quark and gluon subsystems, previously studied for the nucleon, to arbitrary higher-spin particles. For spin-0 and spin-1/2 particles, this force is characterized by the…

高能物理 - 唯象学 · 物理学 2025-09-01 June-Young Kim , Hyun-Chul Kim

We have considered the possibility to describe the astrophysical S-factors of some light atomic nuclei on the basis of the potential cluster model by taking into account the supermultiplet symmetry of wave functions and splitting the…

核理论 · 物理学 2010-05-12 S. B. Dubovichenko , A. V. Dzhazairov-Kakhramanov

We study the dependence of the surface magnetic fields of radio pulsars on the choice of Equations of State, pulsar masses and the values of the angle between the magnetic axis and the spin axis of the pulsars within simple dipole model. We…

天体物理学 · 物理学 2008-08-26 Manjari Bagchi

We have attempted to build a parametric based simplified and analytical model to map the interaction of quarks and gluons in presence of magnetic field, which has been constrained by quark condensate and thermodynamical quantities like…

高能物理 - 唯象学 · 物理学 2021-06-29 Jayanta Dey , Sarthak Satapathy , Ankita Mishra , Souvik Paul , Sabyasachi Ghosh

We develop an effective model for a neutron star with a magnetosphere. It takes into account the electromagnetic torques acting on the magnetic dipole, the friction forces between the crust and the core, and the gravitational corrections.…

天体物理学 · 物理学 2009-10-30 H. Casini , R. Montemayor

We investigate the topological Hall effect (THE) in the monoaxial chiral crystal GdPt$_2$B, a recently discovered compound that exhibits putative helimagnetism below 87 K. The distinct THE was observed in GdPt2B in the magnetically ordered…

强关联电子 · 物理学 2023-06-28 Yoshiki J. Sato , Hikari Manako , Ryuji Okazaki , Yukio Yasui , Ai Nakamura , Dai Aoki

The magnetic interactions in one-dimensional, two-dimensional (2D) and ladder cuprates are evaluated systematically by using small Cu-O clusters. We find that the superexchange interaction J between nearest neighbor Cu spins strongly…

强关联电子 · 物理学 2015-06-25 Yoshiaki Mizuno , Takami Tohyama , Sadamichi Maekawa

A kinetic theory for spin plasmas is put forward, generalizing those of previous authors. In the model, the ordinary phase space is extended to include the spin degrees of freedom. Together with Maxwell's equations, the system is shown to…

等离子体物理 · 物理学 2009-11-13 Gert Brodin , Mattias Marklund , Jens Zamanian , Asa Ericsson , Piero L. Mana

Plasma energization through magnetic reconnection in the magnetically-dominated regime featured by low plasma beta ($\beta = 8 \pi nkT_0/B^2 \ll 1$) and/or high magnetization ($\sigma = B^2/(4 \pi nmc^2) \gg 1$) is important in a series of…

高能天体物理现象 · 物理学 2016-05-25 Fan Guo , Hui Li , William Daughton , Xiaocan Li , Yi-Hsin Liu

We present how a phase factor is generated when an electric dipole moves along a closed trajectory inside a magnetic field gradient. The similarity of this situation with charged particles in a magnetic field can be employed to simulate…

介观与纳米尺度物理 · 物理学 2009-11-10 Jiannis K. Pachos

We compute nucleon and Delta elastic and transition form factors, and compare predictions made using a framework built upon a Faddeev equation kernel and interaction vertices that possess QCD-like momentum dependence with results obtained…

核理论 · 物理学 2016-12-14 Jorge Segovia , Ian C. Cloet , Craig D. Roberts , Sebastian M. Schmidt

The low-energy two neutrino-two photon interactions in the presence of homogeneous magnetic field are studied. The cross sections in external magnetic field are shown to be larger than in vacuum by factor $\sim (m_W /m_e) ^4(B/B_c) ^2$. The…

高能物理 - 唯象学 · 物理学 2008-02-03 Shaisultanov R