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Browse Dissertations and Theses  Physics by Title
Now showing items 16251644 of 2731

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(1988)A path integral formulation of the SU(N) Kondo model is explored as a possible theoretical tool for studying generalizations of the model, such as the Kondo lattice, which are difficult to study by other means. Saddle ...
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(20140916)Path integral Monte Carlo is a proven method for accurately simulating quantum mechanical systems at finitetemperature. By stochastically sampling Feynman's path integral representation of the quantum manybody density ...
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(2001)Finally, we have calculated the DeybeWaller factor in solid helium for a range of temperatures and densities, and compared the scaling behavior with the predictions of harmonic theory. The first nonGaussian contribution ...
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(2001)Below Tλ = 2.17 K, bulk 4He is a superfluid and has a nonzero BoseEinstein condensate fraction. This work will focus primarily on how phenomena such as superfluidity, Bose condensation and superfluid vortices are ...
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(1994)Based on Richard P. Feynman's formulation of quantum mechanics, Path Integral Monte Carlo is a computational abinitio method to calculate finite temperature equilibrium properties of quantum manybody systems. As input, ...
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(1990)We study two representative problems related to the dynamics of pattern formation in nonlinear, dissipative systems far from equilibrium. The first problem addresses the dynamical mechanism of velocity and shape selection ...
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(20100820)The temperature dependence of the magnetic penetration depth (λ) has been measured in single crystals of fully deuterated κ(ET)2Cu[N(CN)2]Br. This material separates into superconducting (SC) and antiferromagnetic (AFI) ...
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(200405)The magnetic penetration depth λ of various unconventional superconductors have been measured down to ~0.1 K using a tunneldiode based, selfinductive technique at 21 and 28 MHz. The samples measured are the heavyfermion ...
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(2009)We investigate the mechanism by which supernova ejecta can penetrate the solar system, and in particular, directly deposit live radioactivities on Earth. This study is motivated by the discovery of live undersea 60Fe from ...
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(1984)Magnetization data, covering a wide range of temperatures and applied fields, are reported for the series of amorphous alloys (FepNi1_p)80P20. The ironrich alloys are shown to be good ferromagnets, with the expected ...
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(1965)We have developed and experimentally_verifie~ a theory that displays the connection between the Bloembergen, Purcell, and Pound perturbation theory approach to nuclear resonance and Redfield's theory of spin temperature ...
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(1971)In this paper we present a generalization of Salpeter's approach to solving the BetheSalpeter equation for the hydrogen atom to the case of any two particles of spin ≤ 1. In order to preserve the same general form of ...
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Now showing items 16251644 of 2731