搜索结果: 1-7 共查到“应用物理学 systems”相关记录7条 . 查询时间(0.14 秒)
Linear theory and violent relaxation in long-range systems: a test case
Linear theory long-range systems
2010/11/17
In this article, several aspects of the dynamics of a toy model for longrange Hamiltonian systems are tackled focusing on linearly unstable unmagnetized (i.e. force-free) cold equilibria states of the...
Cartesian approach for constrained mechanical systems
Cartesian approach constrained mechanical systems
2010/11/19
In the history of mechanics, there have been two points of view for studying mechanical systems: Newtonian and Cartesian.
According the Descartes point of view, the motion of mechanical systems is ...
Universal routes to spontaneous PT-symmetry breaking in non-hermitian quantum systems
Universal routes PT-symmetry non-hermitian quantum systems
2010/11/17
PT-symmetric systems can have a real spectrum even when their Hamiltonian is non-hermitian, but develop a complex spectrum when the degree of non-hermiticity increases. Here we utilize random-matrix ...
Optimized pulse sequences for suppressing unwanted transitions in quantum systems
Optimized pulse sequences suppressing unwanted transitions
2010/11/8
We investigate the nature of the pulse sequence so that unwanted transitions in quantum systems can be inhibited optimally. For this purpose we show that the sequence of pulses proposed by Uhrig [Phys...
Entropy Production in Nonequilibrium Systems Described by a Fokker-Planck Equation
Entropy production Irreversible systems Fokker-Planck equation
2010/10/13
We study the entropy production in nonequilibrium systems described by a Fokker-Planck equation. We have devised an expression for the entropy flux in the stationary state. We have found that the entr...
A Representation of the Virasoro Algebra Via Wigner-Heisenberg Algebraic Technique to Bosonic Systems
the Virasoro Algebra Wigner-Heisenberg Algebraic Technique Bosonic Systems
2010/10/28
Using the Wigner-Heisenberg algebra for bosonic systems in connection with oscillators we find a new representation for the Virasoro algebra.
Influence of measurement on the life-time and the line-width of unstable systems
Influence life-time line-width unstable systems
2010/10/13
We investigate the quantum Zeno effect in the case of electron tunneling out of a quantum
dot in the presence of continuous monitoring by a detector. It is shown that the Schr¨odinger
equation for t...