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Carving Out the Space of Conformal Field Theories
(2012-12-19)
We study the constraints of conformal symmetry and unitarity in Conformal Field Theories (CFTs). Crossing symmetry of four-point functions implies universal bounds on operator dimensions and three-point function coefficients. ...
Trapped Antihydrogen in Its Ground State
(2012-12-17)
Antihydrogen atoms \((\bar{H})\) are confined in a magnetic quadrupole trap for 15 to 1000 s - long enough to ensure that they reach their ground state. This milestone brings us closer to the long-term goal of precise ...
Topological Properties of Interacting Fermionic Systems
(2012-12-17)
This thesis is a study of three categories of problems in fermionic systems for which topology plays an important role: (i) The properties of zero modes arising in systems of fermions interacting with a bosonic background, ...
Inelastic Collisions of Atomic Antimony, Aluminum, Erbium and Thulium below 1 K
(2012-11-15)
Inelastic collision processes driven by anistropic interactions are investigated below 1 K. Three distinct experiments are presented. First, for the atomic species antimony (Sb), rapid relaxation is observed in collisions ...
Dust in Large Optical Surveys
(2012-08-03)
We present results studying the distribution and properties of the diffuse dust in the Milky Way Galaxy using large optical surveys—specifically, the Sloan Digital Sky Survey (SDSS) and the Panoramic Survey Telescope and ...
Dark and Light: Unifying the Origins of Dark and Visible Matter
(2012-07-23)
The Standard Model of particle physics can account for neither the dark matter dominating the universe's matter density, nor the baryon asymmetry that leads to the visible matter density. This dissertation explores models ...
Fermi Gas Microscope
(2012-08-03)
Recent advances in using microscopes in ultracold atom experiment have allowed experimenters for the first time to directly observe and manipulate individual atoms in individual lattice sites. This technique enhances our ...
Soft Colloids from p(NIPAm-co-AAc): Packing Dynamics and Structure
(2012-08-03)
Traditionally, the experimental model of choice for studying the structure and dynamics of glasses or crystals are hard-sphere colloids. An analogy with molecular or atomic materials is often drawn, in which each colloidal ...
Single Electron Probes of Fractional Quantum Hall States
(2012-08-10)
When electrons are confined to a two dimensional layer with a perpendicular applied magnetic field, such that the ratio of electrons to flux quanta \((\nu)\) is a small integer or simple rational value, these electrons ...
Time-Dependent Density Functional Theory for Open Quantum Systems and Quantum Computation
(2012-08-10)
First-principles electronic structure theory explains properties of atoms, molecules and solids from underlying physical principles without input from empirical parameters. Time-dependent density functional theory (TDDFT) ...