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Now showing items 163-182 of 373

  • Icosahedral Skyrmions 

    HOUGHTON, CONOR JAMES (American Institute of Physics, 2003)
    In this article we aim to determine the baryon numbers at which the minimal energy Skyrmion has icosahedral symmetry. By comparing polyhedra which arise as minimal energy Skyrmions with the dual of polyhedra that minimize ...
  • Improved stochastic estimation of quark propagation with Laplacian Heaviside smearing in lattice QCD 

    PEARDON, MICHAEL (2011)
    A new method of stochastically estimating the low-lying effects of quark propagation is proposed which allows accurate determinations of temporal correlations of single-hadron and multihadron operators in lattice QCD. The ...
  • Improving Algorithms to Compute All Elements of the Lattice Quark Propagator 

    PEARDON, MICHAEL JAMES; RYAN, SINEAD MARIE; SKULLERUD, JONIVAR (Elsevier, 2005)
    We present a new exact algorithm for estimating all elements of the quark propagator. The advantage of the method is that the exact all-to-all propagator is reproduced in a large but finite number of inversions. The ...
  • In search of a scaling scalar glueball 

    PEARDON, MICHAEL JAMES (Elsevier, 1999)
    Anisotropic lattices are an efficient means of studying the glueballs of QCD, however problems arise with simulations of the lightest, scalar state. The mass is strongly dependent on the lattice spacing, even when ...
  • Indefinite theta series and generalised error functions 

    Manschot, Jan (2018)
    Theta series for lattices with indefinite signature ( n + ,n − ) arise in many areas of mathematics including representation theory and enumerative algebraic geometry. Their mod- ular properties are well understood ...
  • Instanton vibrations of the 3-Skyrmion 

    HOUGHTON, CONOR JAMES (American Physical Society, 1999)
    The Atiyah-Drinfeld-Hitchin-Manin matrix corresponding to a tetrahedrally symmetric 3-instanton is calculated. Some small variations of the matrix correspond to vibrations of the instanton-generated 3-Skyrmion. These ...
  • Integrable Hamiltonian for Classical Strings on AdS(5) x S**5 

    FROLOV, SERGEY (Institute of Physics, 2005)
    We find the Hamiltonian for physical excitations of the classical bosonic string propagating in the AdS_5 x S^5 space-time. The Hamiltonian is obtained in a so-called uniform gauge which is related to the static gauge by ...
  • Integrable lattice models for strongly correlated electrons 

    Quinn, Eoin (Trinity College (Dublin, Ireland). School of Mathematics, 2013)
    This thesis is dedicated to the study of a new family of integrable lattice models for strongly correlated electrons, namely the Hubbard- Shastry models. The techniques of exactly solvable models, and in particular those ...
  • Interferometry and non-equilibrium noise in the fractional quantum Hall effect 

    Smits, Olaf (Trinity College (Dublin, Ireland). School of Mathematics, 2014)
    We study theoretical aspects of fractional quantum Hall devices based on tunnelling point contacts. The fractional quantum Hall effect is the prime example of a (2 + 1) dimensional system with non-trivial topological order. ...
  • Intersection cohomology of moduli spaces of sheaves on surfaces 

    Manschot, Jan (2018)
    We study intersection cohomology of moduli spaces of semist able vector bundles on a complex algebraic surface. Our main result relates inte rsection Poincar ́e polynomials of the moduli spaces to Donaldson-Thomas ...
  • Inversion symmetric 3-monopoles and the Atiyah-Hitchin manifold 

    HOUGHTON, CONOR JAMES (IOP, 1996)
    We consider 3-monopoles symmetric under inversion symmetry. We show that the moduli space of these monopoles is an Atiyah?Hitchin submanifold of the 3-monopole moduli space. This allows what is known about 2-monopole ...
  • Isoscalar meson spectroscopy from lattice QCD 

    PEARDON, MICHAEL; THOMAS, CHRISTOPHER (2011)
    We extract to high statistical precision an excited spectrum of single-particle isoscalar mesons using lattice QCD, including states of high spin and, for the first time, light exotic J(PC) isoscalars. The use of a novel ...
  • The Kaon Bag Parameter at Physical Mass 

    GARRON, NICOLAS (2014)
  • Konishi operator at intermediate coupling. 

    FROLOV, SERGEY (2011)
    TBA equations for two-particle states from the sl(2) sector proposed by Arutyunov, Suzuki and the author are solved numerically for the Konishi operator descendent up to 't Hooft's coupling 2046. The data obtained ...
  • Krylov subspaces from bilinear representations of nonlinear systems 

    IVANOV, ROSSEN (Emerald, 2007)
    For efficient simulation of state-of-the-art dynamical systems as arise in all aspects of engineering, the development of reduced-order models is of paramount importance. While linear reduction techniques have received ...
  • Large scale parallel network simulation 

    Lawless, Eoin (Trinity College (Dublin, Ireland). School of Mathematics, 2004)
    Simulation is one of the primary tools used in studying computer networks. However the difficulties of simulating a network grow with its size. With the hardware resources currently available it is not feasible to simulate ...
  • Lattice determinations of the strange quark mass 

    RYAN, SINEAD MARIE (University of Chicago, 1999)
    The importance of the strange quark mass, as a fundamental parameter of the Standard Model (SM) and as an input to many interesting quantities, has been highlighted in many reviews, eg in Ref . A first principles calculation ...