Browsing Pure & Applied Mathematics by Title
Now showing items 341-360 of 390
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Spinning strings in AdS(5) x S**5 and integrable systems
(Elsevier, 2003)We show that solitonic solutions of the classical string action on the AdS5 ? S5 background that carry charges (spins) of the Cartan subalgebra of the global symmetry group can be classified in terms of periodic solutions ... -
Stability of QED
(2011)It is shown for a class of random, time-independent, square-integrable, three-dimensional magnetic fields that the one-loop effective fermion action of four-dimensional QED increases faster than a quadratic in B in the ... -
Static Gauge and Energy Spectrum of Single-mode Strings in AdS_5xS^5
(2013)Motivated by the notorious di culties in determining the rst quantum corrections to the spectrum of short strings in AdS 5 S 5 from rst principles, we study closed bosonic strings in this background employing a ... -
Static-light hadrons on a dynamical anisotropic lattice
(Proceedings of Science, 2005)We present preliminary results for the static-light meson and baryon spectra for Nf = 2 QCD. The study is performed on an anisotropic lattice and uses a new all-to-all propagator method allowing us to determine particle ... -
Static-light matrix elements on a dynamical antisotropic lattice
(Elsevier, 2005)The static-light matrix element needed to determine fB is studied on an anisotropic lattice with Nf = 2. The improvement in precision due to stout links and all-to-all propagators is investigated. -
Static-light-light baryons : a spectroscopic study using distillation
(Trinity College (Dublin, Ireland). School of Mathematics, 2013)Over the last decade, hadron spectroscopy in lattice QCD has graduated from calculating single rows of the quark propagation matrix to calculating all elements of the quark propagation matrix - the so-called all-to-all ... -
String breaking by light and strange quarks in QCD
(Elsevier, 2019)The energy spectrum of a system containing a static quark anti-quark pair is computed for a wide range of source separations using lattice QCD with Nf=2+1 dynamical flavours. By employing a variational method with a basis ... -
String breaking from Lattice QCD with Nf=2+1 dynamical fermions
(Trinity College Dublin. School of Mathematics. Discipline of Pure & Applied Mathematics, 2019)In quantum chromodynamics (QCD), the static potential V (r) is defined as the energy of the ground state of the system containing a static quark and a static antiquark, separated by a distance r. As a consequence of confinement, ... -
String breaking with 2+1 dynamical fermions using the stochastic LapH-method
(2018)The static potential V(r) between a static quark and a static antiquark separated by a distance r is defined as the energy of the ground state of the system. As a consequence of confinement, the energy between the ... -
String corrections to the holographic RG flow of supersymmetric SU(N) x SU(N+M) gauge theory
(Elsevier, 2002)We study leading string corrections to the type IIB supergravity solution dual to the N = 1 supersymmetric SU(N + M) ? SU(N) gauge theory coupled to bifundamental chiral superfields Ai,Bj, i, j = 1, 2. This solution was ... -
String hypothesis for the AdS_5 x S^5 mirror
(2009)We discuss the states which contribute in the thermodynamic limit of the mirror theory, the latter is obtained from the light-cone gauge-fixed string theory in the AdS5 ? S5 background by the double-Wick rotation. We analyze ... -
Stringy Higgs Mechanizm and Fate of Open Strings
(2001)We propose a refinement of the physical picture describing di fferent vacua in bosonic string theory. The vacua with closed strings and open string s are connected by the string field theory version of the Higgs ... -
Studying spike trains using a van Rossum metric with a synapse-like filter
(2009)Spike trains are unreliable. For example, in the primary sensory areas, spike patterns and precise spike times will vary between responses to the same stimulus. Nonetheless, information about sensory inputs is communicated ... -
SU(3) glueballs on coarse, anisotropic lattices
(Elsevier, 1997)Results from a calculation of the low-lying glueball spectrum of pure-gauge SU(3) are used as a test of the effectiveness of improved discretisation schemes in reducing finite spacing errors. Glueball masses are extracted from ... -
SU(N) monopoles and Platonic symmetry
(American Institute of Physics, 1997)We discuss the ADHMN construction for SU(N) monopoles and show that a particular simplification arises in studying charge N?1 monopoles with minimal symmetry breaking. Using this we construct families of tetrahedrally ... -
Supercritical biharmonic equations with power-type nonlinearity
(2009)We study two different versions of a supercritical biharmonic equation with a power-type nonlinearity. First, we focus on the equation Delta(2)u = vertical bar u vertical bar(p-1)u over the whole space R(n), where n > 4 ... -
Superstrings on AdS_4 x CP^3 as a Coset Sigma-model
(2008)According to the recent proposal by Aharony, Bergman, Jafferis and Maldacena the N=6 supersymmetric Chern-Simons theory in three dimensions has a 't Hooft limit whose holographic dual is described by type IIA superstings ... -
Supersymmetric vacua and Bethe ansatz
(2009)This note is a short announcement of some results of a longer p aper where the supersymmet- ric vacua of two dimensional N = 4 gauge theories with matter, softly broken by the twisted masses down to N = 2, are shown ... -
Symanzik Improvement of the gradient flow in lattice gauge theories
(2015)We apply the Symanzik improvement progra- mme to the 4 + 1-dimensional local re-formulation of the gradient flow in pure SU ( N ) lattice gauge theories. We show that the classical nature of the flow equation ...
