Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 190 for “"correlation functions"”.
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Optimizing tensor contractions for nuclear correlation functions
Nuclear correlation functions reveal interesting physical properties of atomic nuclei, including ground state energies and scattering potentials. However, calculating their values is computationally intensive due to the fact that the number of terms from quantum chromodynamics in a nuclear wave …
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CFT correlation functions from AdS/CFT correspondence
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1999.
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Euclidean Dynamical Triangulations: Running Couplings and Curvature Correlation Functions
… of the model. We also study two-point curvature correlation functions for gravity. Upon removing the disconnected contributions to the correlators, we find universal behavior in these correlators, including a power-law drop-off with distance with a power consistent with -10. We also explore a …
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Scaling laws and correlation functions near magnetic critical points
… which describe the behavior of thermodynamic and correlation functions near T. Kadanoff's derivation of the scaling 1aw is reviewed. An experimental survey of ferromagnetic and antiferromagnetic data near T is presented. Susceptibility, correlation length, magnectization, specific heat and a …
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Quantum Mechanical Calculations of Time Correlation Functions for Neat Fluids
… to the propagator, it is shown that real-time correlation functions can be expressed as integrals of smooth functions, and thus can be efficiently evaluated by Monte Carlo methods. Tests on a model anharmonic system coupled to a bath of 25 harmonie oscillators are presented, and in spite of the …
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Studies of correlation functions in random medium theory by Son V. Nghiem.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1988.
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N(th)-Order Correlation Functions of Galaxies From the Sloan Digital Sky Survey
I present the correlation function measurements and analysis I have conducted with SDSS data. I have focused my measurements on angular N-point area-averaged correlation functions (o N(theta)) and auto-correlation functions (o2 (theta)) of galaxies. The measured o N(theta) are used to calculate the …
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Scaling and Correlation Functions to Map and Understand the Heterogeneity of the Productive Layer
… solution is a two-step process based on the Pair Correlation Function (PCF) approximation method that takes into account the effect of scattering by considering the interactions between any two points of a heterogeneous medium. The amplitude of the correlations of fluctuations are estimated for …
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The characterization of seismic earth structures and numerical mantle convection experiments using two-point correlation functions
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1995.
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Predictions and Constraints of Cosmological Correlators
<p>In this dissertation, we study the role of correlation functions in Cosmology. The study is bidirectional: We explore the constraints that correlation functions gathered from data impose on different theories; we also analyze the constraints that get imposed on correlation functions given …
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Theory of High Temperature Spin Dynamics
… the quantitative theory of the time-dependent correlation functions characterizing the high temperature spin dynamics. The original results presented in this thesis include: (I) model-independent analysis of the long-time behavior of the correlation functions of interest, which reveals that …
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Centrality dependence of two-particle correlations in relativistic heavy ion collisions
… on the centrality dependence of two-particle correlations in Au+Au collisions at ... 200GeV are presented. A particular focus is devoted to investigating any anomalous behavior in the centrality dependence of correlation functions, as previous results suggest existence of such tendencies …
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All Dressed Up And Ready To Go: A Tale Of Two Quarks.
… of these exotic states. Thus far, the diquark correlations required for a tetraquark configuration of X(3872) have been primarily examined through the use of diquark correlation functions where the Schwinger string is introduced to extract gauge invariant information from said diquark …
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Random Sphere Packing Model of Heterogeneous Propellants
… developed which uses the concept of multi-point correlation functions. A set of intrinsic length scales of local density fluctuations in random heterogeneous propellants is identified by performing a Monte-Carlo study of the correlation functions. This method of analysis shows great promise for …
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Analysis of Two-point Turbulence Measurements for Aeroacoustics
… 0012 half wing, are used to calculate space-time correlation functions and 'pointwise' wave number frequency spectra. Two upwash spectra, calculated for locations in the region of the wake that is roughly homogenous in the spanwise direction, are direct estimates of the full wave number frequency …
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A viscoelastic hydrodynamic approach to the density fluctuations in classical liquids
… research to focus on the description of time correlation functions which establish a link between microscopic dynamics and macroscopic properties. Previous treatments of the time correlation functions mainly focused on a bottom-up, from microscopic to macroscopic, perspective. This work, …
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Probabilistic Schwarzian Field Theory
… 3 we rigorously compute a natural class of correlation functions of cross-ratio observables. These correlation functions were originally formally derived in physics by taking a $c\to \infty$ limit of two dimensional Liouville CFT and, in particular, a limit of the DOZZ formula. Moreover, we …
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The Polyakov loop and its correlators in higher representations of SU(3) at finite temperature
… and diquark and baryonic Polyakov loop correlation functions with fundamental sources in SU(3) pure gauge theory and 2-flavour QCD with staggered quarks and Qbar Q-singlet correlation functions with sources in the fundamental and adjoint representation in SU(3) pure gauge theory. We have …
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Aspects of Topological Sigma Models
… in part two. We describe an algorithm to compute correlation functions in the topological subsector of certain N = (0, 2) nonlinear sigma models1 is. Additionally, A-twisted Landau-Ginzburg models---twisted nonlinear sigma models with superpotentials---are analyzed and related via renormalization …
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Gauged Linear Sigma Model and Mirror Symmetry
… localization to show that A-twisted GLSM correlation functions for certain supermanifolds are equivalent to corresponding Atwisted GLSM correlation functions for hypersurfaces. The second part of that chapter defines associated Cartan theories for non-abelian GLSMs by studying partition …
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