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The long-range spectral density correlations (spectral rigidities $\bar{\Delta}_3(\bar n)$ and related spectral compressibilities) of the $E\otimes (b_1+b_2)$ Jahn-Teller model are found strongly nonuniversal with respect to the Hamiltonian…

Soft Condensed Matter · Physics 2009-11-11 E. Majernikova , Serge Shpyrko

Quantum dots are gate-defined within InSb nanowires, in proximity to NbTiN superconducting contacts. As the coupling between the dot and the superconductor is increased, the odd-parity occupations become non-discernible (erased) both above…

Mesoscale and Nanoscale Physics · Physics 2020-07-01 Z. Su , R. Zitko , P. Zhang , H. Wu , D. Car , S. R. Plissard , S. Gazibegovic , G. H. A. Badawy , M. Hocevar , J. Chen , E. P. A. M. Bakkers , S. M. Frolov

Over one hundred years have passed since the nuclear isomer was first introduced, in analogy with chemical isomers to describe long-lived excited nuclear states. In 1921, Otto Hahn discovered the first nuclear isomer $^{234m}$Pa. After…

Nuclear Experiment · Physics 2022-06-28 Zhiguo Ma , Changbo Fu , Wanbing He , Yugang Ma

Inspired by the newly discovered isomeric states in the rare-earth neutron-rich nuclei, high-$K$ isomeric states in neutron-rich samarium and gadolinium isotopes are investigated within the framework of the cranked shell model (CSM) with…

Nuclear Theory · Physics 2018-12-19 Xiao-Tao He , Yu-Chun Li

A collective vector-boson model with broken SU(3) symmetry is applied to several deformed even-even nuclei. The model description of ground and $\gamma$ bands together with the corresponding B(E2) transition probabilities is investigated…

Nuclear Theory · Physics 2009-09-25 N. Minkov , S. Drenska , P. Raychev , R. Roussev , Dennis Bonatsos

We investigate three types of averaging principles and the normal deviation for multi-scale stochastic differential equations (in short, SDEs) with polynomial nonlinearity. More specifically, we first demonstrate the strong convergence of…

Dynamical Systems · Mathematics 2023-08-22 Mengyu Cheng , Zhenxin Liu , Michael Röckner

We explore, within the framework of an algebraic sp(4) shell model, discrete approximations to various derivatives of the energies of the lowest isovector-paired 0^+ states of atomic nuclei in the 40 <A < 100 mass range. The results show…

Nuclear Theory · Physics 2008-11-26 K. D. Sviratcheva , A. I. Georgieva , J. P. Draayer

We study the phase diagram of R_{1-x}A_xMnO_3 (R=La, Pr, Nd, Sm ; A=Ca, Sr, Ba) by taking into account the degeneracy of $e_g$ orbitals and the anisotropy of the transfer integral. The electron-electron interaction is treated in the mean…

Strongly Correlated Electrons · Physics 2016-08-31 Ryo Maezono , Sumio Ishihara , Naoto Nagaosa

We analyze theoretically the entanglement between two non-planar and light identical molecules (e.g., pyramidal as $NH_3$) that present inversion doubling due to the internal spatial inversion of their nuclear conformations by tunneling.…

Quantum Physics · Physics 2020-01-08 Isabel Gonzalo , Miguel A. Antón

We apply support vector machine (SVM) to study the phase transition between many-body localized and thermal phases in a disordered quantum Ising chain in a transverse external field. The many-body eigenstate energy $E$ is bounded by a…

Disordered Systems and Neural Networks · Physics 2019-02-26 Wei Zhang , Lei Wang , Ziqiang Wang

We study theoretically the electric dipole transitions of even Ni isotopes at low energies, using the self-consistent quasi-particle random-phase approximation (RPA) with the D1S Gogny interaction and a continuum-RPA model with the SLy4…

Nuclear Theory · Physics 2015-10-28 P. Papakonstantinou , H. Hergert , R. Roth

We study multi-hadron systems with a single heavy quark (charm or bottom) in the limit of heavy quark mass. The spin degeneracy of the states with quantum numbers $(j+1/2)^{P}$ and $(j-1/2)^{P}$ for $j \neq 0$, known in a normal hadron, can…

High Energy Physics - Phenomenology · Physics 2019-08-07 S. Yasui , K. Sudoh , Y. Yamaguchi , S. Ohkoda , A. Hosaka , T. Hyodo

A first principles embedded cluster approach is used to calculate O chemical shielding tensors, sigma, in prototypical transition metal oxide ABO_3 perovskite crystals. Our principal findings are 1) a large anisotropy of sigma between…

Materials Science · Physics 2015-05-13 Daniel L. Pechkis , Eric J. Walter , Henry Krakauer

The superexponential self-interacting oscillator (SSO) is introduced and analyzed. Its power law potential is characterized by the dependence of both the base and the exponent on the dynamical variable of the oscillator. Opposite to…

Classical Physics · Physics 2021-05-25 Peter Schmelcher

We show that a recently introduced generalized scheme of quantum mechanics has connections to Li\'{e}nard and Levinson-Smith classes of nonlinear systems. For the Li\'{e}nard type, which has coefficients of odd and odd symmetry, we…

Quantum Physics · Physics 2026-03-31 Bijan Bagchi , Anindya Ghose-Choudhury

A thorough understanding of properties of neutron stars requires both a reliable knowledge of the equation of state (EOS) of super-dense nuclear matter and the strong-field gravity theories simultaneously. To provide information that may…

Nuclear Theory · Physics 2016-04-21 Xiao-Tao He , F. J. Fattoyev , Bao-An Li , W. G. Newton

Aging transition is an emergent behavior observed in networks consisting of active (self-oscillatory) and inactive (non self-oscillatory) nodes, where the network transits from a global oscillatory state to an oscillation collapsed state…

Quantum Physics · Physics 2023-02-22 Biswabibek Bandyopadhyay , Tanmoy Banerjee

It is generally acknowledged that an extrapolation in physics from a well-known scale to an unknown scale is perilous. This prevents us from using laboratory experience to gain precise information for the supranuclear matter inside neutron…

General Relativity and Quantum Cosmology · Physics 2019-07-19 Lijing Shao

The possibility of appearance of spin polarized states in nuclear matter is studied within the framework of a Fermi liquid theory with Skyrme effective forces in a wide range of isospin asymmetries and densities. There are a few possible…

Nuclear Theory · Physics 2007-05-23 A. A. Isayev

Previous studies have demonstrated the switching of octupole moment in Mn3Sn driven by spin-orbit torque (SOT). However, they have not accounted for the polycrystalline nature of the sample when explaining the switching mechanism. In this…

Mesoscale and Nanoscale Physics · Physics 2025-01-28 Boyu Zhao , Zhengde Xu , Xue Zhang , Zhenhang Kong , Shuyuan Shi , Zhifeng Zhu