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Now showing items 110-129 of 317

  • Gauge invariant Hamiltonian formulation of lattice Yang-Mills theory 

    FROLOV, SERGEY (World Scientific, 1995)
    It it known that to get the usual Hamiltonian formulation of lattice Yang-Mills theory in the temporal gauge A0 = 0 one should place on every link the cotangent bundle of a Lie group. The cotangent bundle may be considered ...
  • Gauge theories on a 2+2 anisotropic lattice 

    PEARDON, MICHAEL JAMES; RYAN, SINEAD MARIE (American Physical Society, 2003)
    The implementation of gauge theories on a four-dimensional anisotropic lattice with two distinct lattice spacings is discussed, with special attention to the case where two axes are finely and two axes are coarsely discretized. ...
  • Gauge-string duality for (non)supersymmetric deformations of N=4 super Yang-Mills theory. 

    FROLOV, SERGEY (Elsevier, 2005)
    We consider a non-supersymmetric example of the AdS/CFT duality which generalizes the supersymmetric exactly marginal deformation constructed in hep-th/0502086. The string theory background we use was found in hep-th/0503201 ...
  • Gauge-string duality for superconformal deformations of N=4 super Yang-Mills theory. 

    FROLOV, SERGEY (Institute of Physics, 2005)
    We analyze in detail the relation between an exactly marginal deformation of N = 4 SYM | the Leigh-Strassler or \?-deformation" | and its string theory dual (recently constructed in hep-th/0502086) by comparing energies ...
  • Generalised Fourier transform for the Camassa-Holm hierarchy 

    IVANOV, ROSSEN (Institute of Physics, 2007)
    The squared eigenfunctions of the spectral problem associated to the Camassa-Holm equation represent a complete basis of functions, which helps to describe the Inverse Scattering Transform for the Camassa-Holm hierarchy ...
  • Giant magnons in TsT-transformed AdS_5 x S^5 

    FROLOV, SERGEY (IOP Publishing, 2008)
    We consider giant magnons propagating in a \gamma-deformed AdS_5 x S^5 background obtained from AdS_5 x S^5 by means of a chain of TsT transformations. We point out that in the light-cone gauge and in the infinite J limit ...
  • Glueball matrix elements on anisotropic lattices 

    PEARDON, MICHAEL JAMES (Elsevier, 1998)
    We describe a lattice calculation of the matrix elements relevant for glueball production in J/ radiative decays. The techniques for such a calculation on anisotropic lattices with an improved action are outlined. We ...
  • Glueball matrix elements on anisotropic lattices 

    PEARDON, MICHAEL JAMES (Elsevier, 2004)
    The glueball-to-vacuum matrix elements of local gluonic operators in scalar, tensor, and pseudoscalar channels are investigated numerically on several anisotropic lattices with the spatial lattice spacing in the range ...
  • Glueball spectrum and matrix elements on anisotropic lattices 

    PEARDON, MICHAEL JAMES (American Physical Society, 2006)
    The glueball-to-vacuum matrix elements of local gluonic operators in scalar, tensor, and pseudoscalar channels are investigated numerically on several anisotropic lattices with the spatial lattice spacing ranging from ...
  • Glueball spectrum from an anisotropic lattice study 

    PEARDON, MICHAEL JAMES (American Physical Society, 1999)
    The spectrum of glueballs below 4 GeV in the SU~3! pure-gauge theory is investigated using Monte Carlo simulations of gluons on several anisotropic lattices with spatial grid separations ranging from 0.1 to 0.4 fm. Systematic ...
  • The glueball spectrum from novel improved actions 

    PEARDON, MICHAEL JAMES (Elsevier, 2000)
    Results for the inter-quark potential and low-lying SU(3) glueball spectrum from simulations using a new improved action are presented. The action, suitable for highly anisotropic lattices, contains a two-plaquette ...
  • Green-Schwarz strings in TsT-transformed backgrounds. 

    FROLOV, SERGEY (Institute of Physics, 2006)
    We consider classical strings propagating in a background generated by a sequence of TsT transformations. We describe a general procedure to derive the Green-Schwarz action for strings. We show that the U(1) isometry ...
  • Hadron spectroscopy from lattice quantum chromodynamics 

    RYAN, SINEAD (2016)
    Lattice calculations of hadron spectroscopy are discussed. A brief introduction to numerical simulations of QCD, with a focus on spectroscopy is given. Results for spectroscopy of low-lying, excited and exotic states ...
  • Haldane limits via Lagrangian embeddings 

    BYKOV, DMITRI VLADIMIROVICH (Elsevier, 2012)
    In the present paper we revisit the so-called Haldane limit, i.e. a particular continuum limit, which leads from a spin chain to a sigma model. We use the coherent state formulation of the path integral to reduce the problem ...
  • Hamiltonian lattice gauge models and the Heisenberg double 

    FROLOV, SERGEY (World Scientific, 1995)
    Hamiltonian lattice gauge models based on the assignment of the Heisenberg double of a Lie group to each link of the lattice are constructed in arbitrary spacetime dimensions. It is shown that the corresponding generalization ...
  • Heavy hadrons on an anisotropic lattice 

    PEARDON, MICHAEL JAMES; RYAN, SINEAD MARIE (Elsevier, 2004)
    Results from simulations of quarkonia and heavy-light mesons on an anisotropic lattice are presented. The improved quark action and action-parameter tuning used in this study are discussed.
  • Heavy quark physics from lattice QCD 

    RYAN, SINEAD MARIE (Elsevier, 2002)
    I review the current status of lattice calculations of heavy quark quantities. Particular emphasis is placed on leptonic and semileptonic decay matrix elements.
  • Higgs Bundles, Gauge Theories and Quantum Groups 

    SHATASHVILI, SAMSON (2008)
    The appearance of the Bethe Ansatz equation for the Nonlinea r Schr ?odinger equa- tion in the equivariant integration over the moduli space of Higgs bundles is revisited. We argue that the wave functions of the ...
  • High performance scientific computing using FPGAS with IEEE floating point and logarithmic arithmetic for lattice QCD 

    PEARDON, MICHAEL JAMES (IEEE, 2006)
    The recent development of large FPGAs along with the availability of a variety of floating point cores have made it possible to implement high-performance matrix and vector kernel operations on FPGAs. In this paper we seek ...