Avancerad sökning

Hittade 5 uppsatser som matchar ovanstående sökkriterier.

  1. 1. A Non-Relativistic Model of Tetraquarks

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Per Lundhammar; [2020]
    Nyckelord :;

    Sammanfattning : In this thesis, a non-relativistic model of tetraquark in a diquark-antidiquark configuration is investigated. Using a variation of the Cornell potential, the Schrödinger equation is solved numerically, and the four-body problem of the tetraquark is separated into to three two-body problems. LÄS MER

  3. 2. Numerical Calculations of Efimov States in Ultracold Atomic Systems

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Kajsa-My Blomdahl; [2016]
    Nyckelord :Efimov Effect; Ultracold Atoms; Universality; Scattering; Efimov effekt; Ultrakalla Atomer; Universalitet; Spridningslängd; Numeriska Beräkningar;

    Sammanfattning : In systems of ultracold atoms,  the  quantum  Efimov  effect  can  appear where identical bosons form an infinite tower of bound trimer states in the resonant limit, at the bound dimer dissociation threshold. The most characteristic feature of this effect is that their energy spectrum obey a geometric scaling law, which is universal in the sense that it emerges irrespective of the nature of the two body forces. LÄS MER

  4. 3. Orbit Determination Analysis for SSAPurposes

    Master-uppsats, KTH/Rymd- och plasmafysik

    Författare :Matteo Crimella; [2015]
    Nyckelord :;

    Sammanfattning : Space Situational Awareness (SSA) is the characterization of the space environmentand of space activities. The fundament of SSA is the access to information about theorbit of space objects. There exist several techniques to determine the orbit of objects inspace, both from space-based and from ground-based observations. LÄS MER

  5. 4. Three solutions to the two-body problem

    Kandidat-uppsats, Institutionen för matematik (MA)

    Författare :Frida Gleisner; [2013]
    Nyckelord :two-body problem; Newtonian mechanics; classical geometry; Feynman s lost lecture;

    Sammanfattning : The two-body problem consists of determining the motion of two gravitationally interacting bodies with given masses and initial velocities. The problem was first solved by Isaac Newton in 1687 using geometric arguments. LÄS MER

  7. 5. Some theoretical and numerical aspects of the N-body problem

    Kandidat-uppsats, Lunds universitet/Matematik (naturvetenskapliga fakulteten)

    Författare :Kjartan Kari Gardarsson Myrdal; [2013]
    Nyckelord :N-body problem; central configuration; Euler s solution; Lagrange s solution; numerical methods; Euler s method; Heun s method; the classical fourth-order Runge-Kutta scheme; Störmer-Verlet; Mathematics and Statistics;

    Sammanfattning : The N-body problem has been studied for many centuries and is still of interest in contemporary science. A lot of effort has gone into solving this problem but it's unlikely that a general solution will be found with the mathematical tools we have today. We review some of the progress that has been made over the centuries in solving it. LÄS MER