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Showing 1 to 20 of 265 for “"Time evolution"”.

  1. Measurements of the time evolution of coherent excitation

    Camp, Howard AlanKansas State University2005

    … population transfer on a short (nanosecond) timescale. The technique described here uses magneto-optical trap recoil ion momentum spectroscopy (MOTRIMS) as a noninvasive probe of a coherently-controlled system. It provides extremely detailed information about the excitation process, and …

    ksu Repository record

  2. The Phase Space Time Evolution method applied to multigroup neutron transport

    Jones, Richard B.Virginia Polytechnic Institute and State University1971

    The Phase Space Time Evolution (PSTE) method was initially developed for one speed neutrons. This discussion considers the alterations performed in transforming the one speed case to a more general multigroup code. Also the complications which arose in this transformation are discussed. The …

    vt Repository record

  3. Time-evolution of SU(2) lattice gauge theory on a quantum computer

    Rahman, Sarmed A.2024

    … of the propagation of an excitation in real-time. A new error mitigation method was developed to greatly extend the range of comprehensible data over time by using the physics circuits to estimate the accumulated error. I also developed the theoretical foundation for higher energy systems, as …

    york Repository record

  4. Time evolution of compromise effect: essays on the role of information availability

    Zammit, Alessandra <1978>Alma Mater Studiorum - Università di Bologna2007

    bologna Repository record

  5. Anisotropy and Time Evolution of the Electron-Hole Droplet Cloud in Germanium

    Greenstein, Michael2011

    Submitted by Carolyn Rauber (crauber2@illinois.edu) on 2011-06-03T17:54:39Z No. of bitstreams: 1 1981_greenstein.pdf: 9526240 bytes, checksum: 76a5c2b687be76b09e1ebe01b21d036b (MD5)

    uiuc Repository record

  6. Characterization and modeling of pattern dependencies and time evolution in plasma etching

    Farahanchi, AliMassachusetts Institute of Technology2009

    … model capturing pattern dependent effects and time evolution of the etch rate in Deep Reactive Ion Etching (DRIE) is presented. DRIE is a key process for pattern formation in semiconductor fabrication. Non-uniformities are caused due to microloading and aspect ratio dependencies. The etch rate …

    mit Repository record

  7. Study of space-time evolution of flux in a long-life traveling wave reactor

    Shrestha, RijanUniversity of Illinois at Urbana-Champaign2012

    … have been carried out to analyze the space and time evolution of flux in a Traveling Wave Reactor under constant thermal power condition. For the analyses of flux shape, a 3-D box-shaped model of the reactor is developed. The reactor core is divided into two primary regions: the smaller, …

    uiuc Repository record

  8. Asymptotic Expansion for the Time Evolution of the Probability Distribution Given by the Brownian Motion on Semialgebraic Sets

    Ruppert, JuliaUniversität Passau

    … and we establish asymptotic expansions for the time evolution. We study the probability distribution as an example for the occurrence of special parameterized integrals of a globally subanalytic function and the exponential function of a globally subanalytic function. This work is motivated by …

    passau-thes Repository record

  9. Revisiting the importance of a Southern Ocean pattern effect

    McSweeney, Killian P., author, Rugenstein, Maria, advisor, Thompson, Dave, committee member, Davenport, Frances, committee memberColorado State University. Libraries2026

    … (SM00) argued that Southern Ocean clouds set the evolution of global radiative feedbacks in time and hence, determine climate sensitivity. We revisit their argument in current generation climate models: We quantify the time evolution of local atmospheric stability, clouds, and their local and …

    colostate Repository record

  10. Local Hamiltonians in quantum computation

    Nagaj, DanielMassachusetts Institute of Technology2008

    … the Adiabatic Quantum Computing model, based on evolution with a time- dependent Hamiltonian. I show that to succeed using AQC, the Hamiltonian involved must have local structure, which leads to a result about eigenvalue gaps from information theory. I also improve results about simulating …

    mit Repository record

  11. Charge Echo In An Electron Gas

    Liu, Baowei

    … a unitary operator, T, that reverses the time evolution of the electron degrees of freedom. The electron gas is prepared in an initially inhomogeneous state. After a free evolution for a time t<sub>0</sub>, the electrons are distributed more or less uniformly, and the unitary operator, T …

    south-carolina Repository record

  12. Analytic representation of quantum systems

    Eissa, Hend A.University of Bradford2016

    … d paths of these zeros on the torus describe the time evolution of the systems. The calculation of these paths of zeros, is studied. The concepts of path multiplicity, and path winding number, are introduced. Special cases where two paths join together, are also considered. A periodic system which …

    bradford Repository record

  13. CHAOS, holography, and other science

    Roberts, Daniel AdamMassachusetts Institute of Technology2016

    … holographic states. By directly considering the time evolution of local operators, I am led to a simple diagnostic of many-body chaos: a commutator of such operators separated in time and space. Using this diagnostic, I study the growth of operators-a manifestation of the butterfly effect-in a …

    mit Repository record

  14. COMBINING QUANTUM TRAJECTORIES AND TIME-DEPENDENT VARIATIONAL MONTE CARLO FOR MANY-BODY OPEN QUANTUM SYSTEMS

    D'ALBERTO, JACOPOUniversità degli Studi di Milano2024

    … these systems. This thesis introduces the Open-Time Variational Monte Carlo (otVMC) method, which combines the quantum trajectory formalism with Monte Carlo tech- niques to enable real-time simulations of open quantum systems. By exploiting stochas- tic Schrödinger equations and a variational …

    milano Repository record

  15. Aspects of quantum entanglement in critical and topologically ordered systems

    Wen, XuedaUniversity of Illinois at Urbana-Champaign2017

    … by focusing on three interesting cases: (i) the time evolution of entanglement hamiltonian during thermalization of a subsystem after a global quantum quench; (ii) time evolution of entanglement entropy after an inhomogeneous quantum quench; (iii) entanglement negativity evolution after a local …

    uiuc Repository record

  16. Dispersion of graphene nanoplatelets in water with surfactant and reinforcement of mortar with graphene nanoplatelets

    Wotring, ErikUniversity of Illinois at Urbana-Champaign2015

    … of the dispersion. The team characterized the time evolution of particle size with dynamic light scattering (DLS). Ultraviolet-visible spectroscopy (UV-vis) measured the time evolution of the opacity of the suspension. Scanning electron microscopy (SEM) gave a qualitative set of micrographs of …

    uiuc Repository record

  17. The distributions of stellar remnants in disk galaxies

    Molloy, MatthewDublin City University2012

    … a galaxy and their expected dispersion over time. The first part of the thesis is a thorough survey of supernovae in the Asiago database and identification of those that are located away from the plane of the galaxy. He investigated their height and radial distribution relative to the galaxy …

    dcu Repository record

  18. Dynamics of a four-well system interacting with a dissipative environment

    Dubé, MartinUniversity of British Columbia1993

    … in one of the four state as a function of time are found in the limit of overdamped oscillations. Also in this limit, the time evolution of the density matrix of a four-well system is found. The diagonals elements are then rederived by considering an infinite chain of wells.

    ubc Repository record

  19. Model Abstraction in Dynamical Systems: Application to Mobile Robot Control

    Mellodge, PatriciaVirginia Tech2007

    … work also studies the relationship between the evolution of uncertain initial conditions in abstracted control systems. It is shown that a control system abstraction can capture the time evolution of the uncertainty in the original system by an appropriate choice of control input. Abstracted …

    vt Repository record

  20. Optical Binding Phenomena: Observations and Mechanisms

    Taylor, Jonathan MidgleyDurham University2009

    … model is developed, capable of performing time-evolution simulations of a multi-particle system. This is used to analyse and interpret experimental results in evanescent and Gaussian beam traps, and to develop simple, intuitive explanations for the observed phenomena. Novel trapped states …

    durham Repository record

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