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Items (1-20) out of 185 results

3D Neutron Diffraction Studies on the Vortex Lattice

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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

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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

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A Multi-Dimensional Approach to the Characterization of Exoplanetary Atmospheres

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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

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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

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

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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

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

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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

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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

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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

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

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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

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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

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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.

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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

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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

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Applications of Discontinuous Galerkin Methods to Computational General Relativity

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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

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

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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

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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

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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

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Bacterial Mobility in Thin Liquid Films and Near a Solid Boundary

Description:: This work consists of two main projects: the first project describes bacterial confinement within a thin but resilient layer of liquid. The second project reports …
Year:: 2020
Contributor:: Araujo, George B (creator); Tang, Jay (Advisor); Ling, Xinsheng (Reader); Powers, Thomas (Reader); Brown University. Department of Physics (sponsor)
Genre:: theses
Subject:: Biophysics; Bacteriology
Collection:: Physics; Theses and Dissertations

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Brown University Theses and Dissertations

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Items (1-20) out of 185 results

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