Browsing Physics by Title
Now showing items 168187 of 188

T6SS in Pseudomonas aeruginosa: A novel model for toxin delivery
The Type Six Secretion System (T6SS) is a bacterial toxindelivery system targeting bacterial cells which neighbor the donor, promoting recipient cell death. The T6SS is widely conserved among Gramnegative bacteria and ... 
A test of the gravitational inversesquare law at short distance
(20131114)Proposed theories that unify gravity and quantum mechanics often require Newton's gravitational inversesquare law to fail below some length scale. Additionally, some theorists have proposed the discovery of Dark Energy ... 
The role of nuclear physics in supernovae and the evolution of neutron stars, Neutrino Opacities, Equation of State, Transport Coefficients, and Dark Matter Production
A massive star, of at least eight solar masses, end their life cycle in a sudden, catastrophic collapse under its own gravity. In a thousandth of a second, it can shrink from thousands of kilometers across to a ball of ... 
The search for an organizing physical framework for statistics
Theories of statistical analysis remain in conflict and contradiction. But nature reveals an elegant and coherent formulation of statistics in the thermal properties of physical systems. Demanding that a viable statistical ... 
The Structure and Dynamics of the Bacterial Replisome
Cellular reproduction relies on DNA replication. Many bacteria, including Bacillus subtilis and Escherichia coli, possess only a single circular chromosome which is replicated bidirectionally from a single origin. It has ... 
Theoretical and Numerical Studies of Dynamics in Nucleic Acids based on Experimental NMR Data
(20120913)The collection of work presented in this thesis is directed towards building an understanding of the dynamics of nucleic acid molecules and their components using data obtained from solid state and solution NMR experiments. ... 
Thermodynamics of helium and hydrogen films adsorbed on singlewalled carbon nanotube bundles
(2004)Adsorption of Helium and Hydrogen on bundles of single walled carbon nanotubes (SWCNs) has been studied via heat capacity and volumetric isotherm measurements. These measurements allow conclusions regarding the growth of ... 
Topics in field theory and particle phenomenology
In this thesis, I focus on a few different applications of modern quantum field theory. I start with a model beyond the standard model: Little Flavor Theory and its related collider phenomenology. This model combines a ... 
Topics in field theory and particle phenomenology
In this thesis, I focus on a few different applications of modern quantum field theory. I start with a model beyond the standard model: Little Flavor Theory and its related collider phenomenology. This model combines a ... 
Torsion Pendulum Searches for Macroscopic SpinInteractions as a Window on New Physics
The interactions of intrinsic particle spin offer a powerful window into important aspects of new physics, such as hidden high energy symmetries and CPviolation. This dissertation describes a new spin 20pole torsion ... 
Toward a LoopholeFree Bell Inequality Violation with Barium Ions
The successful generation of ionphoton entanglement with a singlytrapped Barium ion and the photon it spontaneously emits is reported along with the current progress and technical details for extending this work to a ... 
Toward a measurement of atomic parity nonconservation using a single, trapped barium ion
(1999)A single, trapped barium ion presents an excellent opportunity to make a precise atomic parity nonconservation measurement. The relatively perturbationfree singleion trapping environment and high efficiency shelving ... 
Towards SelfCorrecting Quantum Memories
This thesis presents a model of selfcorrecting quantum memories where quantum states are encoded using topological stabilizer codes and error correction is done using local measurements and local dynamics. Quantum noise ... 
Transport properties of chiral pwave superconductornormal metal nanostructures
In this thesis, we present a theory of electron transport for unconventional superconductors. We focus on the superconducting properties of Sr<sub>2</sub>RuO<sub>4</sub>, which is a strong candidate for two dimensional ... 
Transport properties of chiral pwave superconductornormal metal nanostructures
In this thesis, we present a theory of electron transport for unconventional superconductors. We focus on the superconducting properties of Sr<sub>2</sub>RuO<sub>4</sub>, which is a strong candidate for two dimensional ... 
Understanding near Fermilevel electronic structure through xray emission spectroscopy
Atomic and molecular chemical properties are largely determined by the electronic structure of near Fermilevel states. Determining this structure is therefore one of the central tasks in materials characterization and ... 
Use Deuterium Solid State NMR Simulations to Study Dynamics of Peptides Adsorbed onto Inorganic Surfaces
(20130417)This work is directed towards building an understanding of the dynamics of protein/peptide adsorbed on inorganic surfaces. Deuterium solid state NMR(SSNMR) is a very special tool for probing molecule dynamics in solid ... 
Variability of Point Sources of Gamma Rays Detected by the Fermi LargeArea Telescope
The Large Area Telescope (LAT) aboard the Fermi GammaRay Space Telescope has revolutionized gammaray astronomy, allowing the detection of thousands of point sources of gamma rays. Variability studies are of significant ... 
Xray Spectroscopies of Warm Dense Matter
This dissertation provides a perspective on the role of xray spectroscopy and diffraction diagnostics in experimental studies of warm dense matter (WDM). The primary focus of the work I discuss is the development of ... 
Xray spectroscopy studies of nonradiative energy transfer processes in luminescent lanthanide materials
Luminescent materials play important roles in energy sciences, through solid state lighting and possible applications in solar energy utilization, and in biomedical research and applications, such as in immunoassays and ...