Results 271 to 280 of about 4,550 (312)

Nonlinear Quantum Dissipative Systems

1994
In the preceding chapter we derived linearised solutions to the quantum fluctuations occurring in some nonlinear systems in optical cavities. In these solutions the quantum noise has been treated as a small perturbation to the solutions of the corresponding nonlinear classical problem.
D.F. Walls, Gerard J. Milburn
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Dissipations in coupled quantum systems

Physical Review A, 2003
We investigate the dynamics of a composite quantum system, comprised of coupled subsystems, of which only one is significantly interacting with the environment. The validity of the conventional ad hoc approach--assuming that relaxation terms can be extracted directly from the master equation of the subsystem interacting with the reservoir--was examined.
Hashem Zoubi, Meir Orenstien, Amiram Ron
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Classical Limit of Quantum Dissipative Systems

Letters in Mathematical Physics, 1998
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Dissipative quantum systems

2020
öz DİSİPATİF QUANTUM SİSTEMLERİ Solmaz, Levent Y.Lisans, Fizik Bolümü Tez Yöneticisi : Prof. Dr. Metin Durgut Ocak 1998, 61 sayfa Basit disipatif quantum sistemlerinin klasik ve quantum durumları çalışılmıştır. Klasik sonuçlar ile bir bağıntı kurulabilmesi amacı ile fenomenolojik bir modelleme gözden geçirilmiştir.
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Quantum tunneling in a dissipative system

Physical Review A, 1996
Applying a technique developed recently [L. H. Yu and C. P. Sun, Phys. Rev. A {bold 49}, 592 (1994); L. H. Yu, Phys. Lett. {bold 202}, 167 (1995)] for a harmonic oscillator coupled to a bath of harmonic oscillators, we present an exact solution for the tunneling problem in an Ohmic dissipative system with inverted harmonic potential.
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Classical fluctuations in dissipative quantum systems

Physical Review D, 1986
Dissipative quantum systems such as an unstable field, thermal field, and cosmological particle production are investigated. Equations of motion for each appropriate mean field are revealed to be Langevin type. The derived correlation of the random field turns out not to be Gaussian nor white in general. A relation between a popular quantum average and
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QUANTUM FIELD THEORY OF A DISSIPATIVE SYSTEM

Modern Physics Letters A, 1995
Quantum dissipative scalar and fermionic fields are studied here from classical stochastic fields. These classical stochastic fields are the outcome of the relativistic generalization of Nelson's stochastic mechanics based on a new microlocal geometry.
Bhattacharya, B., Hajra, K.
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Finite Dissipative Quantum Systems

2002
The subject of these notes is friction in classical and quantum mechanics. Its mathematical description in terms of Markovian semigroups is reviewed, with special emphasis on the notions of complete positivity and normality for the quantum evolutions. Damping is then used to stabilise the motion of a kicked oscillator.
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Chebyshev Expansion Applied to Dissipative Quantum Systems

The Journal of Physical Chemistry A, 2016
To determine the dynamics of a molecular aggregate under the influence of a strongly time-dependent perturbation within a dissipative environment is still, in general, a challenge. The time-dependent perturbation might be, for example, due to external fields or explicitly treated fluctuations within the environment. Methods to calculate the dynamics in
Popescu, B., Rahman, H., Kleinekathoefer, U.   +2 more
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Quantum dissipative systems

AIP Conference Proceedings, 1998
F. Guinea, E. Bascones, M. J. Calderon
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