Zobrazeno 1 - 10
of 166
pro vyhledávání: '"Qiong Gui"'
Autor:
Lin, Qiong-Gui
Publikováno v:
J. Phys. A 37 (2004) 1345-1371
The generalized time-dependent harmonic oscillator is studied. Though several approaches to the solution of this model have been available, yet a new approach is presented here, which is very suitable for the study of cyclic solutions and geometric p
Externí odkaz:
http://arxiv.org/abs/quant-ph/0402159
Autor:
Lin, Qiong-Gui
Publikováno v:
J. Phys. A 36 (2003) 6799-6806
A neutral particle with general spin and magnetic moment moving in an arbitrarily varying magnetic field is studied. The time evolution operator for the Schr\"odinger equation can be obtained if one can find a unit vector that satisfies the equation
Externí odkaz:
http://arxiv.org/abs/quant-ph/0307099
Autor:
Lin, Qiong-Gui
Publikováno v:
Commun. Theor. Phys. 38 (2002) 667-674
A nonrelativistic charged particle moving in an anisotropic harmonic oscillator potential plus a homogeneous static electromagnetic field is studied. Several configurations of the electromagnetic field are considered. The Schr\"odinger equation is so
Externí odkaz:
http://arxiv.org/abs/quant-ph/0212038
Autor:
Lin, Qiong-Gui
Publikováno v:
Chin. J. Phys. (Taipei) 40 (2002) 387-394
The time evolution of wave packets in a harmonic oscillator potential is studied. Some new results for the most general case are obtained. A natural number, called ``degree of rigidity'', is introduced to describe qualitatively how much the shape of
Externí odkaz:
http://arxiv.org/abs/quant-ph/0208106
Autor:
Lin, Qiong-Gui
Publikováno v:
Phys. Lett. A 298 (2002) 67-72
A wave packet of a charged particle always make cyclic circular motion in a uniform magnetic field, just like a classical particle. The nonadiabatic geometric phase for an arbitrary wave packet can be expressed in terms of the mean value of a number
Externí odkaz:
http://arxiv.org/abs/quant-ph/0206036
Autor:
Lin, Qiong-gui
Publikováno v:
J. Phys. A 35 (2002) 377-391
It is well known that any cyclic solution of a spin 1/2 neutral particle moving in an arbitrary magnetic field has a nonadiabatic geometric phase proportional to the solid angle subtended by the trace of the spin. For neutral particles with higher sp
Externí odkaz:
http://arxiv.org/abs/quant-ph/0201024
Autor:
Lin, Qiong-gui
Publikováno v:
J. Phys. A 34 (2001) 1911-1918
We consider the scattering of nonrelativistic particles in three dimensions by a contact potential $\Omega\hbar^2\delta(r)/ 2\mu r^\alpha$ which is defined as the $a\to 0$ limit of $\Omega\hbar^2\delta(r-a)/2\mu r^\alpha$. It is surprising that it gi
Externí odkaz:
http://arxiv.org/abs/quant-ph/0103013
Autor:
Lin, Qiong-gui
Publikováno v:
J. Phys. A 34 (2001) 1903-1909
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 time-independe
Externí odkaz:
http://arxiv.org/abs/quant-ph/0103012
Autor:
Lin, Qiong-gui
Publikováno v:
Phys. Rev. A 63 (2001) 012108
We study the valence electron of an alkaline atom or a general charged particle with arbitrary spin and with magnetic moment moving in a rotating magnetic field. By using a time-dependent unitary transformation, the Schr\"odinger equation with the ti
Externí odkaz:
http://arxiv.org/abs/quant-ph/0101008
Autor:
Lin, Qiong-gui
Publikováno v:
Am. J. Phys. 68 (2000) 1056-1057
The partial wave series for the Coulomb scattering amplitude in three dimensions is evaluated in a very simple way to give the closed result.
Comment: revtex, 6 pages, no figure
Comment: revtex, 6 pages, no figure
Externí odkaz:
http://arxiv.org/abs/quant-ph/0010078