## Department of Physics

Composite Hubble Space Telescope Image. Meg Urry.
The electron density for nanowires of silicon. Ismail-Beigi .
Atomic positions color coded with their relation to the wire. Ismail-Beigi.
Composite image numerical solutions in two dielectric cavities. Stone.

Department of Physics
217 Prospect Street
New Haven, CT 06511-8499

P.O. Box 208120
New Haven, CT 06520-8120

Tel: 203-432-3650
Fax: 203-432-6175

# Alumni List

This page was created in September 2012 and will be added to as information comes in. If you received a physics degree from Yale, we would love to hear from you. Please send your information to Sandra.tranquilli@yale.edu.

05/2013

Christopher Gilbreth
Ph.D., Yale University
Ultracold Fermi Gases: Effective Interactions and Superfluidity
Cold atomic Fermi gases are clean, highly experimentally tunable systems with connections to many different fields of physics. However, in the strongly-interacting regime they are nonperturbative and difficult to study theoretically. One challenge is to calculate the energy spectra of few-body cold atom systems along the crossover from a gas described by a Bose-Einstein condensate (BEC) to a gas described by Bardeen-Cooper-Schrieffer (BCS) theory. The configuration-interaction (CI) method is...
Theoretical Nuclear Physics
12/2012

Matthew Phillips
Ph.D., Yale University
Sensory Processing in the Olfactory Bulb: From Lateral Inhibition to Behavior
Sensory perception is the fundamental process by which all organisms gain knowledge of their world. Perceptions arise from stimulations of sensory receptors that are translated into neuronal signals. These signals become processed and refined greatly before reaching conscious awareness in higher brain areas. Understanding the mechanisms and functions of this processing is a significant and major challenge for science. The use of model systems, such as the mammalian olfactory system, is...
Biological Physics

Hasuk (Francis) Song
Ph.D., Yale University
Entanglement in Quantum Many-Body Systems
The scaling of entanglement entropy and, more recently, the full entanglement spectrum have become useful tools for characterizing certain universal features of quantum many-body systems. We motivate the importance of entanglement in the study of many-body systems by considering the “gratuitously big” size of Hilbert space and the need for generic ansatzes that efficiently represent useful wave functions. In addition, we study the scaling of the entanglement entropy in the two-dimensional spin-...
Theoretical Condensed Matter Physics

Steven Eckel
Ph.D., Yale University
A Search for the Electron EDM using Europium-Barium Titanates
The discovery of a permanent electric dipole moment (EDM) of a fundamental particle would prove a great discovery in modern physics, as such an EDM would violate some of the core symmetries of the fundamental forces of nature. Many models that go beyond the standard model of particle physics produce EDMs with magnitudes approaching the level detectable by the next generation of experiments. One possibility for such an experiment involves the use of a solid sample at low temperatures. In a...
Atomic Physics
05/2012

Hanghui Chen
Ph.D., Yale University
A first principles study of oxide interfaces
Both theoretically and experimentally, enormous progress has been made toward understanding and controlling materials at the atomic scales. The advances in thin film deposition techniques make it possible to grow artificially designed heterostructures that do not exist in nature. The theoretical developments of ab initio calculations combined with the rapid increase of computational capability enable scientists to analyse data, make predictions and even design experiments from numerical...
Theoretical Condensed Matter Physics

Benjamin Kaplan
Ph.D., Yale University
Testing the Standard Model of Particle Physics: A Search for New Phenomena in Multilepton Events with the ATLAS detector at the LHC
An excess of events over the Standard Model predictions in final states with three or more high momentum charged leptons would constitute evidence of new physical processes. Presented is a generic search for new phenomena in such events. To reduce the largest Standard Model backgrounds, events consistent with the production of a Z boson are rejected. Events are selected from 1.02 fb$^{-1}$ of proton-proton collision data recorded by the ATLAS detector at $\sqrt{s}$ = 7 TeV. There is no...
Experimental Particle Physics

Sarah Lockwitz
Ph.D., Yale University
A Search for the Standard Model Higgs Boson in CDF II Data
This dissertation presents a search for the standard model Higgs boson in the associated production process proton anti-proton to ZH to electron positron b quark anti-b quark. Data amounting to an integrated luminosity of 7.5/fb at a center of mass energy of 1.96 TeV collected at the Collider Detector at Fermilab (CDF) at the Tevatron are analyzed. Two objectives are pursued in the methods applied: maximize acceptance, and distinguish the signal from background. The first aim is met by applying...
Experimental Particle Physics

Carl Schreck
Ph.D., Yale University
Mechanical and vibrational properties of model granular media
This thesis describes comprehensive computational and theoretical studies of the mechanical and vibrational properties of athermal particulate systems, such as granular media, foams, and emulsions, modeled as frictionless particles with spherical or ellipsoidal shapes. First, we investigate the mechanical properties of static packings of ellipsoidal particles. While amorphous packings of spherical particles are isostatic at jamming onset and possess the minimum contact number \$z=z_{\rm iso...
Theoretical Condensed Matter Physics

Andrew Jayich
Ph.D., Yale University
Laser cooling a 261 kHz harmonic oscillator
Optomechanics is a diverse field where mechanical harmonic oscillators are coupled to an optical field via radiation pressure. The mechanical devices range from atom clouds and nanotubes up to the kilogram scale mirrors used in the LIGO observatories. The starting point for many interesting measurements begins with the mechanical device in its ground state, where it has less than a phonon worth of energy. In Jack Harris's lab we are working to cool a mechanical membrane to its ground state...
Atomic Physics