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A slightly tilted permanent magnet rotating at high speed can induce a magnetic field capable of trapping another permanent magnet in a gravity independent levitated bound state, bypassing Earnshaw's theorem. During levitation, the floater…

经典物理 · 物理学 2026-04-23 Hugo Schreckenberg , Zayneb El Omari El Alaoui , Guilhem Gallot

Alkali dimers, $\mathrm{Ak}_2$, located on the surface of a helium nanodroplet, are set into rotation through the polarizability interaction with a nonresonant 1-ps-long laser pulse. The time-dependent degree of alignment is recorded using…

In the context of an application to superfluidity, it is elaborated how to do quantum mechanics of a system with a rotational velocity. Especially, in both the laboratory frame and the non-inertial co-rotating frame, the canonical momentum,…

凝聚态物理 · 物理学 2009-11-10 Yu Shi

The quantum problem of an electron moving in a plane under the field created by two Coulombian centers admits simple analytical solutions for some particular inter-center distances. These elementary eigenfunctions, akin to those found by…

数学物理 · 物理学 2017-10-03 M. A. Gonzalez Leon , J. Mateos Guilarte , M. de la Torre Mayado

K$_{1-x}$Li$_{x}$TaO$_3$ (KLT) solid solutions exhibit a variety of interesting physical phenomena related to large displacements of Li-ions from ideal perovskite A-site positions. First-principles calculations for KLT supercells were used…

材料科学 · 物理学 2009-11-07 S. A. Prosandeev , E. Cockayne , B. P. Burton

The eigenvalues and eigenfunctions of a linear {\alpha}^{2}-dynamo have been computed for different spatial distributions of an isotropic \alpha-effect. Oscillatory solutions are obtained when \alpha exhibits a sign change in the radial…

地球与行星天体物理 · 物理学 2012-08-08 A. Giesecke , F. Stefani , G. Gerbeth

An active chiral rotor is a spherical object that can generate chiral flows in a fluid by rotating about an axis. For example, if the flow around the upper hemisphere of the chiral rotor is in a clockwise direction, then the flow in the…

软凝聚态物质 · 物理学 2025-01-29 R. Maity , Snigdha Thakur , P. S. Burada

In this letter, we investigate the nonrelativistic quantum motion of a charged particle within a rotating frame, taking into account the Aharonov-Bohm (AB) effect and a uniform magnetic field. Our analysis entails the derivation of the…

介观与纳米尺度物理 · 物理学 2025-10-28 Carlos Magno O. Pereira , Frankbelson dos S. Azevedo , Luís Fernando C. Pereira , Edilberto O. Silva

Certain Hamiltonians based on two coupled quantum mechanical spins exhibit degenerate eigenvalues despite having no obvious non-abelian symmetries. Operators acting to permute the degenerate states do not have a simple form when expressed…

原子物理 · 物理学 2007-05-23 Steven S. Gubser , Robert K. Bradley

In this article, we investigate the motion of a spinning particle at a constant inclination, different from the equatorial plane, around a Kerr black hole. We mainly explore the possibilities of stable circular orbits for different spin…

广义相对论与量子宇宙学 · 物理学 2018-10-24 Sajal Mukherjee , Rajesh Kumble Nayak

We study a pair of canonoid (fouled) Hamiltonians of the harmonic oscillator which provide, at the classical level, the same equation of motion as the conventional Hamiltonian. These Hamiltonians, say $K_{1}$ and $K_{2}$, result to be…

量子物理 · 物理学 2015-06-26 P. Tempesta , E. Alfinito , R. A. Leo , G. Soliani

The motion of a charged particle moving on a flat surface is studied through the constants of motion associated to the system, given the magnetic gauge. The usual Landau' solution and the non separable solution for the Landau's gauge are…

量子物理 · 物理学 2025-01-28 Gustavo V. López , Jorge A. Lizarraga

Overdamped Brownian motion of a self-propelled particle is studied by solving the Langevin equation analytically. On top of translational and rotational diffusion, in the context of the presented model, the "active" particle is driven along…

软凝聚态物质 · 物理学 2013-05-15 Borge ten Hagen , Sven van Teeffelen , Hartmut Löwen

The Hamiltonian of a system of two quantum mechanical particles moving on the $d$-dimensional lattice $\Z^d$ and interacting via zero-range attractive pair potentials is considered. For the two-particle energy operator $H_{\mu}(K),$ $K\in…

数学物理 · 物理学 2011-03-07 Saidakhmat N. Lakaev , Shohruh Yu. Holmatov

Nonintegrable dynamical systems have complex structures in their phase space. Motion of a test charged particle in a dipole magnetic field can be reduced to a 2 degree-of-freedom (2 d.o.f.) nonintegrable Hamiltonian system. We carried out a…

动力系统 · 数学 2023-02-15 Hanrui Pang , Siming Liu , Rong Liu

We employ Hamiltonian light-front quantum field theory in a basis function approach to solve the non-perturbative problem of an electron in a strong scalar transverse confining potential. We evaluate both the invariant mass spectra and the…

高能物理 - 唯象学 · 物理学 2011-02-18 H. Honkanen , P. Maris , J. P. Vary , S. J. Brodsky

We investigate rotational state changes in a single collision of diatomic molecular ions, polar or apolar, with an atomic ion. Rotational state changes may occur since the angular degree of freedom of the molecular ions interacts with the…

量子物理 · 物理学 2026-04-20 J. Martin Berglund , Michael Drewsen , Christiane P. Koch

Atoms trapped in a red detuned retro-reflected Laguerre-Gaussian beam undergo orbital motion within rings whose centers are on the axis of the laser beam. We determine the wave functions, energies and degeneracies of such quantum rotors…

量子物理 · 物理学 2021-01-04 Igor Kuzmenko , Tetyana Kuzmenko , Yehuda B. Band

Geometric models of quantum relativistic rotating oscillators in arbitrary dimensions are defined on backgrounds with deformed anti-de Sitter metrics. It is shown that these models are analytically solvable, deriving the formulas of the…

广义相对论与量子宇宙学 · 物理学 2009-10-31 Ion I. Cotăescu

We study a relativistic charged Dirac particle moving in a rotating magnetic field. By using a time-dependent unitary transformation, the Dirac equation with the time-dependent Hamiltonian can be reduced to a Dirac-like equation with a…

量子物理 · 物理学 2009-11-07 Qiong-gui Lin