Now showing items 358-377 of 488

    • Relativistic quantum field in theoretical physics 

      Phan, Trung Van (Massachusetts Institute of Technology, 2015)
      Quantum field theory is the most well-developed tool in theoretical physics to study about the dynamics at microscopic scales, with particles and quantum behaviors. In this thesis I'll review about the construction of ...
    • Resolution effects in the hybrid strong/weak coupling model 

      Hulcher, Zachary R (Massachusetts Institute of Technology, 2017)
      Within the context of a hybrid strong/weak coupling model of jet quenching, we study the consequences of the fact that the plasma produced in a heavy ion collision cannot resolve the substructure of a collimated parton ...
    • Results from five Chandra observations of the normal galaxy NGC 3877 

      Gonzalez, Edgar Raul, 1977- (Massachusetts Institute of Technology, 2004)
      We present the results of five Chandra observations of the normal galaxy NGC 3877. A total of 27 X-ray sources are detected, including SN 1998S. We find 15 sources to be variable during the 646-day period covered by the ...
    • Rigorous fit to the peak region of the thrust distribution 

      Prouty. Jeffrey C (Massachusetts Institute of Technology, 2014)
      We continue the work of Abbate et al. in [1], in which a factorization formula for the thrust distribution in electron-positron collisions was developed in the framework of soft-collinear effective theory. We extend the ...
    • Robustness and infrared sensitivity of various observables in the application of AdS/CFT to heavy ion physics 

      Shi, Yeming (Massachusetts Institute of Technology, 2008)
      We investigate the robustness with respect to the introduction of nonconformality of five properties of strongly coupled plasmas that have been calculated in K = 4 supersymmetric Yang-Mills (SYM) theory at nonzero temperature, ...
    • The role of eddies in buoyancy flux 

      Ring, Michael J., 1979- (Massachusetts Institute of Technology, 2001)
      This thesis explores the role of eddies in determining the stratification of the ocean through a laboratory experiment. The experiment uses a dual-tank apparatus, with a smaller tank sitting inside the larger tank. Both ...
    • Salty development of an optical photoresist 

      Chao, Adam (Adam C.) (Massachusetts Institute of Technology, 2008)
      In this series of experiments, we add salt to a photoresist developer and observe the effect on photoresist contrast. In order to measure contrast, we designed an anti-reflection coating stack to reduce reflections between ...
    • Scanning tunneling spectroscopy of lead-substituted bismuth strontium copper oxide 

      Zimmermann, Michelle (Michelle Anne) (Massachusetts Institute of Technology, 2007)
      The hole-doped cuprate Bi ... is doped with lead to the solubility limit of x = 0.38 and studied using STM/STS in the overdoped regime where Tc < 2K. Despite the high lead content, residual supermodulations are observed ...
    • Scattering and mesons 

      Ramazanoğlu, Fethï Mübïn (Massachusetts Institute of Technology, 2006)
      We present the P-matrix, an alternative method to parameterize the S-matrix, which is particularly useful for low energy meson-meson scattering. We discuss its basic properties and use it to analyze the isospin 0 and 2 ...
    • The scattering and shrinking of a Gaussian wave packet by delta function potentials 

      Sun, Fei, S.B. Massachusetts Institute of Technology (Massachusetts Institute of Technology, 2012)
      In this thesis, we wish to test the hypothesis that scattering by a random potential causes localization of wave functions, and that this localization is governed by the Born postulate of quantum mechanics. We begin with ...
    • Scattering properties of polyacrylamide gels and their relation to protein electrophoretic migration 

      Cook, Laurel A. (Laurel Anne) (Massachusetts Institute of Technology, 1994)
    • Search for evidence of cosmic ray acceleration by supernova Remnant Kes 41 using the Fermi LAT 

      Joubert, Timothy Robert (Massachusetts Institute of Technology, 2013)
      The analysis presented in this paper incorporated photon events received during the full run time of the Fermi Gamma Space Telescope (FGST) Large Area Telescope (LAT) to date. By studying the [gamma]y emission of the ...
    • Search for Higgs to invisible decays in vector boson fusion production 

      Dominguez, Patricia Zoila (Massachusetts Institute of Technology, 2017)
      A search for invisibly decaying Higgs bosons is performed using the vector boson fusion production (VBF) mode. This search was conducted using Run 2 data, collected by the CMS detector at the LHC in 2016 at a center of ...
    • The search for orbital decay in hot Jupiters 

      Patra, Kishore Chandra (Massachusetts Institute of Technology, 2018)
      We summarize our results, so far, in the search for orbital decay in exoplanets. Orbital decay is the gradual shrinkage of the planetary orbit due to tidal dissipation. We ranked currently known exoplanetary systems according ...
    • Search for pre-existing Delta states at BLAST from ²H(e,e'[Delta]⁺⁺ 

      Greene Chana M. (Chana Michelle) (Massachusetts Institute of Technology, 2006)
      At the MIT-Bates Linear Accelerator Center a comprehensive study of low-Q2 spin-dependent electron scattering from deuterium has been carried out using the Bates Large Acceptance Spectrometer Toroid (BLAST). This experiment ...
    • Search for rare events in [the square root of sigma nu nu] = 200 GeV Au+Au PHOBOS data 

      Mott, Alexander (Alexander Robert) (Massachusetts Institute of Technology, 2009)
      In this analysis, we set an upper bound on the rate of rare events: events whose dN/dn distribution deviates more than statistically from the ensemble average dN/dn distribution for s [the square root of sigma nu nu] = 200 ...
    • Search for the production of quark-gluon plasma in e+e- collisions at [square root of] s = 91.2 GeV with Archived ALEPH LEP1 data 

      Badea, Anthony Shane Nicolae. (Massachusetts Institute of Technology, 2019)
      Measurements of two-particle angular correlations for charged particles emitted in e+ e- collisions at a center-of-mass energy of 91 GeV are presented. The archived data are collected with the ALEPH detector at LEP. The ...
    • Search for the standard model Higgs Boson in the Z gamma channel 

      Singh, Kevin (Massachusetts Institute of Technology, 2013)
      The Higgs decay into a photon and a Z boson, with the Z boson decaying into an electron-positron pair (electron channel) or muon-antimuon pair (muon channel), allows for accurate reconstructions of the Higgs boson mass and ...
    • Second order critical point in QCD phase diagram 

      Assawasunthonnet, Wathid (Massachusetts Institute of Technology, 2009)
      In this thesis I explore the theoretical model based on Asakawa and Nonaka's idea[l]. I start by arguing that the critical point of the QCD phase diagram is second order and belongs to the three dimensional Ising model ...
    • Self-adjoint extensions to the Dirac Coulomb Hamiltonian 

      Brainerd, Andrew Eric (Massachusetts Institute of Technology, 2010)
      The Dirac equation is the relativistic generalization of the Schrödinger equation for spin 1/2 particles. It is written in the form -ihc -ihac OXIa+t' Omc 29 = ih-o (1.1) where V) is a four component Dirac spinor and the ...