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(2000)Over the last decade, much progress has been made in understanding the thermodynamic and kinetic properties of selfassembled quantum dot structures. These structures form as a result of the strain energy in mismatched ...
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(1995)High resolution transmission electron microscopy (HRTEM) has been extensively used as a structure characterization technique in materials and biological science. In the past, qualitative use of HRTEM has been primarily employed.
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Quantum Dynamics of Small Josephson Junctions: An Application to Superconductivity in Granular Films (1986)This thesis is devoted to a study of the quantum dynamics of small Josephson junctions. Of interest are those features of the junction's behavior which depend explicitly on the quantum mechanical nature of the phase ...
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(2004)The degree to which a pure quantum state is entangled can be characterized by the distance or angle to the nearest unentangled state. This geometric measure of entanglement is explored for bipartite and multipartite pure ...
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(2006)A major part of this work involves quantifying the effect of corevalence correlation via the CPP. The CPP is found to be important for accurate calculations of the total energy, and for excitations of atoms and small ...
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(2009)Finally, and most generally, autocorrelation times for energies and structural properties are very long, on the order of thousands of Monte Carlo cycles or picoseconds of Molecular Dynamics integration. Thus a great deal ...
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(1996)The goals of our research have been to: (i) expand the applicability of the quantum Monte Carlo (QMC) methods to larger molecular systems and check the reliability of traditional approaches, (ii) determine the impact of ...
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(1994)Quantum Monte Carlo techniques; in their various incarnations, calculate ground state or finite temperature properties of manybody quantum systems. We apply the pathintegral Monte Carlo method to hydrogen at densities ...
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(1995)Quantum Monte Carlo has been established as a powerful computational tool to study quantum manybody systems. It has been successfully applied to small atoms and molecules, the electron gas, hydrogen at high pressures, ...
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(1994)Variational and Diffusion Monte Carlo are powerful computational methods which can afford accurate estimates of the ground state properties of quantum manybody problems. We have applied these Monte Carlo methods to the ...
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(1994)Quantum Monte Carlo has recently made great progress as a computational tool for quantum manybody systems. We have extended previous Monte Carlo methods to study both ground state and excited states of the twodimensional ...
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(2007)Finally, we report simulations on small pH2 droplets at low temperatures. We reconcile two intriguing observations whereby the clusters appear to be superfluid and yet show evidence for solidlike order. We find magic ...
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(2005)Quantum Monte Carlo (QMC) is an extremely powerful method to treat manybody systems. Usually QMC has been applied in cases where the interaction potential has a simple analytic form, like the 1/r Coulomb potential. However, ...
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(2002)Quantum Monte Carlo (QMC) method is a powerful simulation tool for studying the properties of physical and chemical systems. The application of QMC to extended systems subjects to finite size effects because the simulation ...
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(1996)Recent experiments on highdensity excitons in Cu$\sb2$O provide evidence for degenerate quantum statistics and BoseEinstein condensation of this nearly ideal gas. We model the time dependence of this bosonic system ...
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(1985)The chargedensity wave (CDW) dynamics of the linear chain compound orthorhombic TaS(,3) is characterized by extensive measurements of dc conductivity, ac admittance, direct mixing, harmonic mixing, second harmonic generation, ...
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(1986)This thesis describes a subset of phenomena at AlGaAsGaAs heterointerfaces related to multiple quantum wells and modulationdoped structures. In the first section, two important results concerning multiple quantum well ...
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(1995)In this work we consider systems in which small normalmetal structures (N) are put into contact with a large superconductor (S), with the goal of spatially characterizing the superconductivity. Confined regions with ...
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(1991)The central work of this thesis is manybody Green's Function Method calculations in atoms using Hedin's GW approximation with various vertex corrections, leading to polarizabilities and quasiparticle energies, which are ...
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Now showing items 492511 of 726