Brown University Theses and Dissertations

Brown University Library archives dissertations in accordance with the Brown Graduate School policy.

For dissertations published prior to 2008, please consult the following Dissertation LibGuide

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Items (1-20) out of 174 results

3D Neutron Diffraction Studies on the Vortex Lattice

Description:
In condensed matter physics the vortex lattice of type-II superconductors provides a prototype for studying the effect of random pinning on elastic systems. One important …
Year:
2012
Contributor:
Wang, Xi (creator)
Ling, Xinsheng (Director)
Kosterlitz, J. (Reader)
Mitrovic, Vesna (Reader)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
neutron diffraction
vortex lattice
screw dislocation
Neutrons--Diffraction
Collection:
Physics
Theses and Dissertations
Full Record

A Measurement of the Top Quark Mass in the Lepton + Jets Channel using the Ideogram Technique at D\O\

Description:
This thesis presents a measurement of the mass of the top quark. The top quarks are produced through proton-antiproton collisions with $\sqrt{s}$=1.96 TeV at the …
Year:
2013
Contributor:
PARIHAR, Vivek Singh (creator)
Heintz, Ulrich (Director)
Cutts, David (Reader)
Narain, Meenakshi (Reader)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
top quark mass
ideogram
D0
Tevatron
Jets
Collection:
Physics
Theses and Dissertations
Full Record

A Multi-Dimensional Approach to the Characterization of Exoplanetary Atmospheres

Description:
Planetary atmospheres are governed by a complex interplay of chemical, radiative, and advective processes that yield an inherently three dimensional structure. Probing the three dimensional …
Year:
2019
Contributor:
Kilpatrick, Brian Michael (creator)
Tucker, Gregory (Advisor)
Dell'Antonio, Ian (Reader)
Lewis, Nikole (Reader)
Brown University. Department of Physics (sponsor)
Genre:
theses
Subject:
Extrasolar planets
Collection:
Physics
Theses and Dissertations
Full Record

A Next Generation Analysis Pipeline for 21cm Epoch of Reionization Studies

Description:
The Epoch of Reionization (EoR) is a period during the history of the Universe that as of today has been largely unconstrained by cosmological measurements. …
Year:
2019
Contributor:
Kerrigan, Joshua (creator)
Pober, Jonathan (Advisor)
Tucker, Gregory (Reader)
Dell'Antonio, Ian (Reader)
Brown University. Department of Physics (sponsor)
Genre:
theses
Subject:
Machine Learning
Cosmology
Radio astronomy
Epoch of reionization
21cm
Collection:
Physics
Theses and Dissertations
Full Record

A Pedagogical Demonstration/Lecture Plan for the Introduction of Gravitational Wave Astronomy

Description:
This thesis explores the concepts that make up an effective classroom demonstration, derived the analytical form of gravitational wave emission from a binary system, and …
Year:
2020
Contributor:
Mera Evans, Tyco B. (creator)
Coyne, Robert (thesis advisor)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
Education
Astrophysics
Astronomy
Gravity
Collection:
Physics
Theses and Dissertations
Full Record

A Position-Sensitive Liquid Xenon Time-Projection Chamber for Direct Detection of Dark Matter: The XENON10 Experiment

Description:
Recent astrophsyical observations indicate that about 23% of the matter in the universe exists as non-luminous, non-baryonic dark matter. General thermodynamic arguments suggest that if …
Year:
2008
Contributor:
Sorensen, Peter F (creator)
Gaitskell, Richard (Director)
Robert, Lanou (Reader)
Dell'Antonio, Ian (Reader)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
WIMP
dark matter
liquid Xe
Dark matter (Astronomy)
Collection:
Physics
Theses and Dissertations
Full Record

A Search For Heavy Charged Higgs Bosons in the CMS Experiment

Description:
The Standard Model (SM) of Particle Physics has proven to be an incredible mathematical framework for describing the observed elementary particles that make up the …
Year:
2016
Contributor:
Garabedian, Alex E (creator)
Narain, Meenakshi (Director)
Heintz, Ulrich (Reader)
Cutts, David (Reader)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
Charged Higgs
CMS
2HDM
Collection:
Physics
Theses and Dissertations
Available to Brown-affiliated users only
Full Record

A search for long-lived particles that stop in the CMS detector and decay to muons

Description:
A search for long-lived particles that are produced in proton-proton collisions at the CERN LHC, come to rest in the CMS detector, and decay to …
Year:
2016
Contributor:
Alimena, Juliette (creator)
Cutts, David (Director)
Narain, Meenakshi (Reader)
Fan, JiJi (Reader)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
particle physics
LHC
CMS
long-lived exotic particles
Muons
Collection:
Physics
Theses and Dissertations
Full Record

A vortex shedding model for unsteady fluid dynamics

Description:
A new model, based on matched asymptotic analysis, for the simulation of two-dimensional unsteady flows around structures, has been developed and tested on a wide …
Year:
2016
Contributor:
Guo, Xinjun (creator)
Mandre, Shreyas (Director)
Powers, Thomas (Reader)
Valles, James (Reader)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
boundary layer approximation
Vortex shedding
Collection:
Physics
Theses and Dissertations
Available to Brown-affiliated users only
Full Record

Amorphous Germanium Nanostructures: Optical Characterization and Applications for Improved Photodetector Performance

Description:
In this thesis, I first focus on the study of the optical properties of three kinds of amorphous germanium (Ge) nanostructures: Ge ultra-thin films, Ge-SiO2 …
Year:
2016
Contributor:
Liu, Pei (creator)
Pacifici, Domenico (Director)
Valles, James (Reader)
Marston, John (Reader)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
amorphous germanium nanostructures
photodetectors
plasmonics
Optical detectors
Collection:
Physics
Theses and Dissertations
Available to Brown-affiliated users only
Full Record

An Absolute Calibration of Sub-1 keV Nuclear Recoils in Liquid Xenon Using D-D Neutron Scattering Kinematics in the LUX Detector

Description:
We propose a new technique for the calibration of nuclear recoils in large noble element dual-phase time projection chambers (TPCs) used to search for WIMP …
Year:
2016
Contributor:
Verbus, James R (creator)
Gaitskell, Richard (Director)
Dell'Antonio, Ian (Reader)
Narain, Meenakshi (Reader)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
LUX
liquid xenon
nuclear recoil
light yield
charge yield
neutron generator
dark matter
WIMP
Dark matter (Astronomy)
Collection:
Physics
Theses and Dissertations
Full Record

Analysis of brain signals with machine learning and information-theoretic methods

Description:
This thesis presents the techniques we have developed in analyzing brain signals obtained from the most commonly used brain imaging methods, e.g., EEG/MEG and fMRI …
Year:
2008
Contributor:
Wu, Liang (creator)
Cooper, Leon (director)
Ombao, Hernando (reader)
Neskovic, Predrag (reader)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
brain signals
Machine learning
Information theory
Classification
Collection:
Physics
Theses and Dissertations
Full Record

Analytic Quantum Chromodynamics: An Exact, Finite, Non-Perturbative, Gauge-Invariant, Realistic Model of QCD, with A Particular Choice of Renormalization with Applications to High Energy Elastic Proton-Proton Scattering.

Description:
A new non-perturbative, gauge-invariant, exact, finite model of quantum chromody- namics, with a particular choice of renormalization is applied to high energy elastic pp- scattering. …
Year:
2016
Contributor:
Tsang, Peter H (creator)
Fried, Herbert (Director)
Jevicki, Antal (Reader)
Tan, Chung-I (Reader)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
high energy theory
high energy physics
particle physics
non-perturbative
gauge-invariant,quantum field theory
schwinger action
Quantum chromodynamics
Particles (Nuclear physics)
Quarks
Gluons
Feynman diagrams
Schwinger action principle
Collection:
Physics
Theses and Dissertations
Full Record

Anodic alumina as a scalable platform for structural coloration and optical rectification

Description:
Anodized aluminum oxide (AAO) is an interesting material, occupying a unique space -- already used incredibly widely in the world, yet also commonly used for …
Year:
2017
Contributor:
Oller, Declan Danesh (creator)
Xu, Jimmy (Advisor)
Valles, James (Reader)
Mitrovic, Vesna (Reader)
Brown University. Department of Physics (sponsor)
Genre:
theses
Subject:
Optics
Nanotechnology
Nanoscience
nanofabrication
filamentation
resistive switching
optical rectification
structural coloration
physical coloration
Fabry-Perot interferometers
fabry perot
optical cavity
optical resonator
Thin films--Optical properties
Aluminum
Aluminum alloys
anodized aluminum
aao
Aluminum--Anodic oxidation
anodic alumina
anodization
Aluminum oxide
coloration
Collection:
Physics
Theses and Dissertations
Full Record

Applications of Discontinuous Galerkin Methods to Computational General Relativity

Description:
We discuss a discontinuous Galerkin (dG) method and its application to common partial differential equations which arise in the context of general relativity. First we …
Year:
2011
Contributor:
Field, Scott Edward (creator)
Hesthaven, Jan (Director)
Guralnik, Gerald (Reader)
Dell'Antonio, Ian (Reader)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
Numerical Relativity
Spectral Methods
Relativity and gravitational theory
General relativity
Black holes
Discontinuous Galerkin method
Model reduction
Reduced Basis methods
Collocation methods
General relativity (Physics)
Collection:
Physics
Theses and Dissertations
Full Record

Applications of Entropic DNA Trapping to Studies of Giant Acceleration of Diffusion and a Novel Restriction Mapping Method

Description:
This dissertation presents two experimental studies of DNA polymers inside nanofluidic devices with well-defined topographic features. Those features include square pits and rectangular trenches etched …
Year:
2017
Contributor:
Kim, Daniel (creator)
Stein, Derek (Advisor)
Valles , James (Reader)
Pelcovits, Robert (Reader)
Matzavinos, Anastasios (Reader)
Brown University. Department of Physics (sponsor)
Genre:
theses
Subject:
DNA sequencing
Physics
Biophysics
Diffusion
Nonlinear systems
DNA
Collection:
Physics
Theses and Dissertations
Full Record

Aspects of AdS/CFT Correspondence: Symmetries, Integrability and Solitons

Description:
The AdS/CFT correspondence is a conjecture which relates gauge theories to string theories. In order to better understand this duality, several avenues can be taken, …
Year:
2009
Contributor:
Aniceto, Ines V. (creator)
Jevicki, Antal (director)
Volovich, Anastasia (reader)
Tan, Chung-I (reader)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
AdS/CFT
Semi-Classical Strings
Integrable Structures
Giant Magnons
Symmetry Algebra
Solitons
Collection:
Physics
Theses and Dissertations
Full Record

Aspects of High Energy Scattering and AdS/CFT

Description:
We study several aspects of high energy scattering using the AdS/CFT correspondence.We begin with concise theoretical overviews of a few relevant topics. First is a …
Year:
2011
Contributor:
Djuric, Marko (creator)
Tan, Chung-I (Director)
Jevicki, Antal (Reader)
Spradlin, Marcus (Reader)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
High Energy
AdS/CFT
DIS
Odderon
Collection:
Physics
Theses and Dissertations
Full Record

Aspects of Scattering Amplitudes: Symmetry and Duality

Description:
In recent years there have been significant progresses in the understanding of scattering amplitudes at both strong and weak coupling. There are new dualities discovered, …
Year:
2011
Contributor:
Nguyen, Dung Van Tien (creator)
Spradlin, Marcus (Director)
Jevicki, Antal (Reader)
Tan, Chung-I (Reader)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
Scattering Amplitude,Dual Conformal Symmetry,Wilson Loops,Graviton Amplitude,High Energy
Collection:
Physics
Theses and Dissertations
Full Record

BAYESIAN ANALYSIS OF SYSTEMATIC EFFECTS IN INTERFEROMETRIC OBSERVATIONS OF THE COSMIC MICROWAVE BACKGROUND POLARIZATION

Description:
The detection of the primordial B-mode spectrum of the polarized cosmic microwave background (CMB) signal may provide a probe for inflation. However, the B-mode signal …
Year:
2014
Contributor:
Karakci, Ata (creator)
Tucker, Gregory (Director)
Dell’Antonio, Ian (Reader)
Koushiappas, Savvas (Reader)
Brown University. Physics (sponsor)
Genre:
theses
Subject:
bayesian analysis
Cosmic background radiation
Interferometers
Bayesian statistical decision theory
Polarimetry
Collection:
Physics
Theses and Dissertations
Full Record

Items (1-20) out of 174 results