TITLE

The interplay of tunneling, resonance, and dissipation in quantum barrier crossing: A numerical study

AUTHOR(S)
Tanimura, Yoshitaka; Wolynes, Peter G.
PUB. DATE
June 1992
SOURCE
Journal of Chemical Physics;6/1/1992, Vol. 96 Issue 11, p8485
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We discuss the interplay of various quantum effects on barrier crossing for a one-dimensional system with dissipation. This is based on a numerical study using a hierarchy of kinetic equations introduced by Tanimura and Kubo. The numerical work uses a grid in phase space for the Wigner distribution and deals with both the classical limit and the tunneling regimes.
ACCESSION #
7614720

 

Related Articles

  • Decoherence and entanglement in coherent quantum tunneling of magnetization with dissipation. Yi-Hang Nie; Jun-Jun Liang; Yun-Long Shi; Liang, J.-Q. // European Physical Journal B -- Condensed Matter;Jan2005, Vol. 43 Issue 1, p125 

    We study the coherent quantum tunneling of magnetization, for example, in a biaxial molecular magnet with dissipation of the environment which results in the suppression of the tunneling and therefore the decoherence of superposition of macroscopic quantum states in terms of the general...

  • Vortices in Josephson arrays interacting with non-classical microwaves: The effect of dissipation. Konstadopoulou, A.; Hollingworth, J. M.; Everitt, M.; Vourdas, A.; Clark, T. D.; Ralph, J. F. // European Physical Journal B -- Condensed Matter;Apr2003, Vol. 32 Issue 3, p279 

    : Vortices circulating in a ring made from a Josephson array in the insulating phase are studied. The ring contains a `dual Josephson junction' through which the vortices tunnel. External non-classical microwaves are coupled to the device. The time evolution of this two-mode fully quantum...

  • Dissipative tunneling in nanosystems. Benderskii, V.; Kats, E. // Journal of Experimental & Theoretical Physics;Oct2011, Vol. 113 Issue 4, p562 

    A quantum dynamical problem has been analytically solved for a two-level system where localized states L and R are strongly coupled with reservoirs of local oscillations { L} and { R}. It is additionally assumed that the spectra of reservoirs are equidistant and the coupling constants are the...

  • Communication: Engineered tunable decay rate and controllable dissipative dynamics. Lü, Zhiguo; Zheng, Hang // Journal of Chemical Physics;3/28/2012, Vol. 136 Issue 12, p121103 

    We investigate the steering dissipative dynamics of a two-level system (qubit) by means of the modulation of an assisted tunneling degree of freedom which is described by a quantum-oscillator spin-boson model. Our results reveal that the decoherence rate of the qubit can be significantly...

  • Artificial nets from superconducting nanogranules. Ovchinnikov, Yu.; Kresin, V. // Journal of Experimental & Theoretical Physics;Jun2012, Vol. 114 Issue 6, p1012 

    We show that a large transport current can flow through superconducting nets composed of nano-clusters. Although thermal and quantum fluctuations lead to a finite value of dissipation, this value can be very small in one- and two-dimensional systems for realistic parameters of the nanoclusters...

  • Stabilization of localized states in dissipative tunneling systems interacting with monochromatic... Makri, Nancy // Journal of Chemical Physics;2/8/1997, Vol. 106 Issue 6, p2286 

    Discusses the dynamics of an initially localized symmetric two-level system coupled to high-temperature dissipative tunneling and driven by a time-periodic force corresponding to high-frequency monochromatic light. Behaviors in the radiation field confirmed and quantified via accurate numerical...

  • Can Quantum Regression Theorem Be Reconciled with Quantum Fluctuation Dissipation Theorem ? Shiktorov, P.; Starikov, E.; Gruzˇinskis, V.; Reggiani, L. // AIP Conference Proceedings;2003, Vol. 665 Issue 1, p592 

    In the attempt to derive the regression theorem from the fluctuation dissipation theorem several authors claim the violation of the former theorem in the quantum case. Here we pose the question: does it exisist a quantum fluctuation dissipation theorem (QFDT) in its conventional interpretation ?...

  • Theory of open quantum systems. Xu, Ruixue; Yan, YiJing // Journal of Chemical Physics;6/1/2002, Vol. 116 Issue 21, p9196 

    A quantum dissipation theory is constructed with the system-bath interaction being treated rigorously at the second-order cumulant level for both reduced dynamics and initial canonical boundary condition. The theory is valid for arbitrary bath correlation functions and time-dependent external...

  • Phase space approach to theories of quantum dissipation. Kohen, D.; Marston, C.C. // Journal of Chemical Physics;10/1/1997, Vol. 107 Issue 13, p5236 

    Compares six major theories of quantum dissipative dynamics. Redfield theory; Gaussian phase space ansatz of Yan and Mukamel; Master equations of Agarwal, Caldeira-Leggett/Oppenheim-Romero-Rochin and Louisell/Lax; Semigroup theory of Lindblad; Transformation of the time evolving density...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics