Although electrostatics interactions in fluids have been studied for many decades, new results in this field are still challenging our classical understanding of electrolytes. The combination of electrostatics and self-assembly yields many interesting yet challenging problems that are of fundamental scientific interest and show promise for industrial applications. In this...
On-shell formulations of scattering amplitudes for quantum field theories, without utilizating the local descriptions of Lagrangian and Feynman diagrams, have become increasingly useful and important in recent years for both formal and practical reasons. The nonlinear sigma model (NLSM), which describes the interactions between Nambu-Goldstone bosons, is an ideal testing...
Given directives such as the UN Global Goals targeting sustainable development, the research presented herein makes but a small contribution to the advancement of alternative energy technologies. Nevertheless, the present work was largely motivated to address specific points of intrigue within the thermoelectrics community. The general principles demonstrated, however, may...
The pp → W + W − process is important as it allows the test of electroweak theory. Mea-surements of this processes have lead to reduced uncertainties on many other processes one
of which being the Higgs. There have been discrepancies between predicted and measured
cross-section values for pp →...
Due to the unprecedented sensitivity of the Advanced LIGO--Virgo network, in less than ~5 years the field of gravitational-wave astrophysics has evolved from speculating about the properties of compact binary mergers to having an observed population that facilitates astrophysical inference. These observations encode information about their progenitor stellar systems ---...
The three-dimensional (3D) nanoscale structure of III-As nanowires is correlated with optical and electronic property measurements to deconvolve the contributions of strain, composition, and crystal structure to characteristics of interest for future electronic and optoelectronic devices. Multiple advanced two-dimensional (2D) and 3D characterization techniques are employed such as atom probe...
I present the body of work I have pursued over the course of my doctoral study at Northwestern University. First, I conduct an analysis of the measurement abilities of distinctive LISA detector designs, examining the influence of LISA's low-frequency performance on the detection and characterization of massive black hole binaries....
Although flowing granular materials have been formally studied for over two hundred years, their behavior is still poorly understood relative to fluids, solids, and gases. Sheared granular materials with differing particle properties (e.g., size, density, shape) segregate (de-mix) due to percolation (small particles fall between large ones) and buoyancy (light...
In 2018, our ATRAP collaboration produced 5 trapped antihydrogen atoms per hour long trial. An apparatus with a Ioffe octupole trap and a faster magnet dump was used to confine and detect trapped antihydrogen atoms. This apparatus is unique in that four sideports spaced at 90 degrees from each other...
Quantum technologies have the capability of greatly increasing the security of communication systems. Many components are required for a full quantum network including memory, repeaters, routers, and detectors. The efficiencies of quantum communication technologies suffer greatly due to their inherent sensitivity to loss. Low-loss propagation and high detection efficiency can...