Browsing School of Mathematics by Title

Now showing items 144-163 of 390

    • 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-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 ...

    • 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.