Browsing Department of Physics by Title
Now showing items 1550-1569 of 1728
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Tachyon condensation in string field theory
(Massachusetts Institute of Technology, 2003)In this thesis, we present some results that strongly support Sen's conjectures on tachyon condensation on a bosonic D-brane. Our main tool of analysis is level truncated open bosonic string field theory We use level ... -
Tactic behaviors in bacterial dynamics
(Massachusetts Institute of Technology, 2005)The locomotion of a wide class of motile bacteria can be mathematically described as a biased random walk in three-dimensional space. Fluid mechanics and probability theory are invoked to model the dynamics of bacteria ... -
Tailoring light with photonic crystal slabs : from directional emission to topological half charges
(Massachusetts Institute of Technology, 2016)Photonic crystal slabs are a versatile and important platform for molding the flow of light. In this thesis, we consider ways to control the emission of light from photonic crystal slab structures, specifically focusing ... -
A tale of two particles
(Massachusetts Institute of Technology, 2014)It was the earliest of times, it was the latest of times, it was the age of inflation, it was the age of collapse, it was the epoch of perturbation growth, it was the epoch of perturbation damping, it was the CMB of light, ... -
Techniques for direct neutrino mass measurement utilizing tritium [beta]-decay
(Massachusetts Institute of Technology, 2015)This thesis documents efforts performed in the service to two direct neutrino mass experiments, namely KATRIN at the Karlsruhe Institute of Technology in Karlsruhe, Germany and Project8 at the University of Washington in ... -
Techniques for improving the readout sensitivity of gravitational wave antennae
(Massachusetts Institute of Technology, 2012)The detection of gravitational waves (GWs) from astrophysical sources shows promise as a new method to probe extremely energetic phenomena and test the strong field limit of the general theory of relativity. The era of the ... -
Techniques for laser interferometer gravitational wave detectors
(Massachusetts Institute of Technology, 1992) -
Techniques of visual observation of particles in a sound field
(Massachusetts Institute of Technology, 1949) -
Temperature dependence of amyloid beta-protein fibrillization
(Massachusetts Institute of Technology, 1999) -
Temperature dependence of impurity resonances in cuprate superconductors
(Massachusetts Institute of Technology, 2009)In conventional superconductors the superconducting gap in the electronic excitation spectrum prevents scattering of low energy electrons. In high temperature superconductors (HTS) an additional gap, the pseudogap, develops ... -
Temperature gradients in a dry Wilson Cloud Chamber
(Massachusetts Institute of Technology, 1957) -
Temperature-insensitive line ratios
(Massachusetts Institute of Technology, 2009)We develop method to extract elemental abundance ratios using temperature-insensitive ratios of x-ray line fluxes for a collisionally ionized plasma. This method is then refined using more realistic plasma models for coronae ... -
Tensor forces and the theory of hydrogen three
(Massachusetts Institute of Technology, 1950) -
Tensor polarization of the deuteron at high momentum transfer in elastic (e,d) scattering
(Massachusetts Institute of Technology, 1999) -
Terahertz spectroscopy of quantum spin liquids
(Massachusetts Institute of Technology, 2016)The optical properties of the spin-1/2 kagome lattice antiferromagnetic Herbertsmithite, ZnCu₃(OH)₆Cl₂, are studied by means of Terahertz Time-Domain Spectroscopy. Herbertsmithite is proposed to exhibit Quantum Spin Liquid ... -
Test and characterization of a new triple-GEM detector
(Massachusetts Institute of Technology, 2006)In my thesis project, I provide a description of the entire process of materials preparation, assembly, testing, and characterization of several triple-GEM (Gas-Electron Multiplier) prototype detectors. GEM detectors ... -
Testing a novel method to map the 3D distribution of gas clouds in intergalactic space
(Massachusetts Institute of Technology, 2011)We propose a new method to detect intergalactic Lyman a emitter and absorber systems by comparing broadband and narrowband images. The narrowband observations were carried out with the Maryland-Magellan Tunable Filter ... -
Testing and modeling of photo-electric modulators
(Massachusetts Institute of Technology, 2012)Optical links are a promising alternative to the electrical interconnects that are currently used between chips within a computer. A crucial part of an optical link is a modulator, a device that converts an electrical ... -
Testing the Leggett-Garg inequality with solar neutrinos
(Massachusetts Institute of Technology, 2015)One of the fundamental questions in quantum physics is whether measurements reveal pre-existing values. Leggett and Garg derived an inequality that is satisfied by systems featuring both macroscopic realism and non-invasive ... -
Texture improvements in the high-temperature superconducting Bi₂Sr₂Ca₁Cu₂Ox̳/Ag system via surface energy driven grain alignment
(Massachusetts Institute of Technology, 2005)The relation between processing, microstructure, and material property was investigated in the high-temperature superconducting Bi₂Sr₂Ca₁Cu₂Ox̳/Ag system. Experiments were based on a theoretical surface energy model ...
