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Showing 1 to 20 of 358 for “"Landau"”.
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Monopoles and Landau-Ginzburg Models
… ends. We exploit the framework of the gauged Landau-Ginzburg models to address two model problems for the (perturbed) Seiberg-Witten moduli spaces on either C x Σ or H²₊ x Σ, where Σ is any compact Riemann surface of genus ≥ 1. These results will lead eventually to the compactness theorem in …
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Numerical Simulation of Ginzburg-Landau Equations
… two methods to discretize the Ginzburg-Landau equations with the help of link variables. With these equations, we build models to simulate the mixed state of type-II superconductivity. We successfully get Abrikosov vortices by solving both in 2D cases and 3D cases. This tells us that our …
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A review of the Landau-Pomeranchuk-Migdal effect
… the formula needs modification. This is the Landau-Pomeranchuk-Migdal effect. We review here several approaches for the calculation of the revised spectrum and compare the results with experiment.
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A General Study of the Complex Ginzburg-Landau Equation
… differential equation, the complex Ginzburg-Landau (CGL) equation. I first employed the perturbative field-theoretic renormalization group method to investigate the critical dynamics near the continuous non-equilibrium transition limit in this equation with additive noise. Due to the fact …
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Vapor-Liquid Phase Equilibria Using Monte Carlo Wang-Landau Simulations
… this issue is avoided by combining the Wang-Landau (WL) sampling method in the NPT ensemble with efficient techniques for simulating dense liquid regions, such as configurational bias Monte Carlo (CBMC) and hybrid Monte Carlo (HMC). We simulate the liquid-vapor equilibria curves of copper and …
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The nonlinear Schroedinger limit of the complex Ginzburg-Landau equation.
… work consists of a study of the complex Ginzburg-Landau equation (CGL) as a perturbation of the nonlinear Schrodinger equation (NLS) in one dimension under periodic boundary conditions. Using an averaging technique which is similar to a Melnikov method for pde's, necessary conditions are derived …
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Influences of the Darrieus-Landau instability on premixed turbulent flames
… products was discovered by Darrieus and Landau over seventy years ago, and has been named after its inventors. The instability, which prevents flames from being too flat, was thought to lead immediately to turbulent flames. Recent studies, initiated by weakly nonlinear analyses and …
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Lowest Landau level field theory for the fractional quantum Hall effect
… states can be described in terms of their lowest Landau level content, neglecting the possible mixing between Landau levels induced by the potential terms. The LLL approximation, however, leads to a paradox resulting from the apparent impossibility of describing charge transport in a system of …
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Using the Landau-Levich law to seal seams in waterproof clothing
… them with a film of a thickness governed by the Landau-Levich law. The equation governing Landau-Levich behavior is combined with equations describing hole geometry to develop a phase space describing the fluidic and geometric properties necessary to seal a hole. A manual proof of concept test is …
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Landau model for films and interfaces of superfluid 4HE at T=OK
We use a Landau theory appropriate to an inhomogeneous superfluid at temperature T = 0 to describe structural and dynamical effects at a gas/superfluid interface and for a superfluid film on an inert attractive substrate. The parameters of the theory are determined phenomenologically by fitting …
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Localised solutions of the parametrically driven Ginzburg-Landau and nonlinear Schrӧdinger equations
… solutions of the parametrically driven Ginzburg-Landau equation and its nonlinear Schrӧdinger limit. We begin with a detailed analysis of the Faraday Resonance experiment, in which the driven complex Ginzburg-Landau equation (CGLE) arises, and an examination of how the CGLE appears as the …
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Landau Model for Films and Interfaces of Superfluid Helium-4 at T = 0k
We use a Landau theory appropriate to an inhomogeneous superfluid at temperature T = 0 to describe structural and dynamical effects at a gas/superfluid interface and for a superfluid film on an inert attractive substrate. The parameters of the theory are determined phenomenologically by fitting …
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A Study of Inhomogeneities and Anisotrophies In Superconductors via Ginzburg-Landau Type models
… current flow. We study a variety of Ginzburg-Landau type models for superconductivity that can account for inhomogeneous and isotropy materials, grain boundaries, and thermal fluctuations. We develop robust, accurate, and efficient numerical codes and apply them to numerous studies of how …
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A finite element analysis of high kappa, high field Ginzburg-Landau type model of superconductivity
… formulation and analysis of a simplified GinzburgLandau type model of superconductivity which is valid for large K and large magnetic field strengths. This model, referred to as the High kappa model, is derived via formal asymptotic expansion of the full, time-dependent Ginzburg-Landau equations. …
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On Initial-Boundary Value Problems for the Nonlinear Schroedinger Equation and the Ginzburg-Landau Equation
… of the full-line problem for the Ginzburg-Landau equation (GL) is shown in Chapter 3. In Chapter 4, the following results concerning the half-line problem for the Ginzburg-Landau equation are established: (1) local existence-uniqueness; (2) small amplitude solution; (3) criteria for global …
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Experiments in vibro-impact beam dynamics and a system exhibiting a landau-zener quantum effect
… This report also includes the setup for a Landau-Zener Tunneling experiment involving two pendulums, one with fixed length and one with variable length. The experimental setup and tools used will be described, and some experimental results showing agreement with analytical data will be …
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Interplay between background turbulence and Darrieus-Landau instability in premixed flames via a model equation
The effect of the Darrrieus Landau instability on a premixed flame in a turbulent environment is investigated using a model equation known as the Michelson Sivashinsky equation, in both one and two dimensions. The equation is externally forced with noise representative of weak turbulence in the …
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Landau energy loss in liquid scintillator and the search for WIFs with the LVD experiment
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1994.
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