Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Heat bath"”.
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Eliminating critical slowing down in Monte Carlo calculations
… lattice field theory. Traditional Metropolis and heat bath Monte Carlo methods in lattice calculations break down whenever one tries to calculate thermodynamic quantities near critical points; this phenomenon is called Critical Slowing Down, (CSD). Recently, alternate methods have been proposed to …
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Dynamics of molecular adsorbates exposed to ultrafast thermal gradients
… on one end to a gold film, acting as an ultrafast heat bath. Using a laser flash-heating technique, the heat bath can be jumped to several hundred degrees Celsius in the duration of a few picoseconds. As the energy flows from the thermal reservoir into the molecules com- posing the monolayer, a …
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Eliminating critical slowing down in Monte Carlo calculations
… lattice field theory. Traditional Metropolis and heat bath Monte Carlo methods in lattice calculations break down whenever one tries to calculate thermodynamic quantities near critical points; this phenomenon is called Critical Slowing Down, (CSD). Recently, alternate methods have been proposed to …
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STUDIES IN QUANTUM CONTROL AND QUANTUM INFORMATION
… ion trap environments. Lastly, we establish a heat-bath algorithmic cooling framework for continuous variable systems, deriving fundamental cooling limits that distinguish between Gaussian operations and the enhanced capabilities of non-Gaussian operations.
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Internal energy relaxation in nitrogen plasmas
… kinetics of nitrogen molecules relaxing in a heat bath at constant temperature in a background gas composed of electrons and nitrogen atoms. The QCT (Quasi-Classical Trajectory) model recently developed at NASA Ames Research Center is used to study energy transfers and population distribution …
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Effects of an External Field and Dissipation on Decoherence
… the case of a harmonic oscillator coupled to a heat bath by calculating its contribution to the attenuation coefficient, which is a measure of decoherence in coordinate space and involves directly observable probability distributions. It is found that, while non-random external force does not …
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Insulator-Superconductor Transitions in Two Dimensions
… treatment is valid, coupling to an Ohmic heat bath leads to non-monotonic behavior of the dc conductivity as a function of temperature. In the fifth part we analyze the behavior near the 2D IST in the presence of a perpendicular magnetic field. We show that with increasing field H, the QD …
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Macroscopic order from reversible and stochastic lattice growth models
… in two: the part of primary interest, and a "heat bath". We can observe the exchange of heat, energy, and entropy between the two subsystems, and gain insight into the thermodynamics of self-assembly. I introduce a local, deterministic, microscopically reversible model of cluster growth via …
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Thermostated Kac models
We consider a model of N particles interacting through a Kac-style collision process, with m particles among them interacting, in addition, with a thermostat. When m = N, we show exponential approach to the equilibrium canonical distribution in terms of the L2 norm, in relative entropy, and in the …