Browsing Pure & Applied Mathematics by Title
Now showing items 204223 of 373

Nahm data and the mass of 1/4BPS states
(American Physical Society, 2000)The mass of 1 / 4BPS dyonic configurations in N=4 D=4 supersymmetric YangMills theories is calculated within the Nahm formulation. The SU(3) example, with two massive monopoles and one massless monopole, is considered ... 
New hyperKaehler manifolds by fixing monopoles
(American Physical Society, 1997)The construction of new hyperKa?hler manifolds by taking the infinite monopole mass limit of certain Bogomol?nyiPrasadSommerfield monopole moduli spaces is considered. The oneparameter family of hyper Ka?hler manifolds ... 
New integrable system of 2dim fermions from strings on AdS(5) x S**5.
(Institute of Physics, 2006)We consider classical superstrings propagating on AdS5 ? S5 spacetime. We consistently truncate the superstring equations of motion to the socalled fraktur sfraktur u(11) sector. By fixing the uniform gauge we show that ... 
A new multineuron spiketrain metric
(MIT Press, 2008)The VictorPurpura spiketrain metric has recently been extended to a family of multineuron metrics and used to analyze spike trains recorded simultaneously from pairs of proximate neurons. The Victor Purpura metric ... 
Nonperturbative running of the coupling from four flavour lattice QCD with staggered quarks
(2010)Using the Schrodinger functional (SF) with a single staggered fermion field we calculate the SF coupling in fourflavour QCD for a wide range of energies and lattice sizes up to L/a = 16. Preliminary results for the ... 
Nonperturbative study of QCD on a 2 + 2 anisotropic lattice
(Elsevier, 2004)We present preliminary results for the nonperturbative determination of the parameters in a 2+2 anisotropic action. The parameters are required to restore Lorentz invariance in longdistance correlators, using the ... 
Nonperturbative results for the mass dependence of the QED fermion determinant
(2010)The fermion determinant in fourdimensional quantum electrodynamics in the presence of O(2)XO(3) symmetric background gauge fields with a nonvanishing global chiral anomaly is considered. It is shown that the leading mass ... 
Nonperturbative study of the action parameters for anisotropiclattice quarks
(2006)A quark action designed for highly anisotropiclattice simulations is discussed. The massdependence of the parameters in the action is studied and the results are presented. Applications of this action in studies of ... 
Norms and CB Norms of Jordan Elementary Operators
(Elsevier, 2003)We establish lower bounds for norms and CBnorms of elementary operators on . Our main result concerns the operator Ta,bx=axb+bxa and we show Ta,bab, proving a conjecture of M. Mathieu. We also establish some other results ... 
A note on gravityscalar fluctuations in holographic RG flow geometries
(Elsevier, 2000)We study fivedimensional gravity models with nonvanishing background scalar fields which are dual to nonconformal boundary field theories. We develop a procedure to decouple the graviton fluctuations from the scalar ... 
A novel method for evaluating correlation functions in lattice hadron spectroscopy
(2010)We describe a new approach for evaluating hadronic correlation functions which combines LaplacianHeaviside quark smearing with a stochastic estimator of quark propagators. This method utilizes noise ... 
Novel methods for heavyquark physics from lattice QCD
(Trinity College (Dublin, Ireland). School of Mathematics, 2006)The application of 3+1 anisotropic lattices to numerical simulations of hadrons containing heavy quarks is investigated. It is expected that using a fine temporal lattice spacing will suppress large massdependent errors ... 
A Novel quarkfield creation operator construction for hadronic physics in lattice QCD
(2009)A new quarkfield smearing algorithm is defined which enables efficient calculations of a broad range of hadron correlation functions. The technique applies a lowrank operator to define smooth fields that are to be used ... 
An O(a) modified lattice setup of the Schrödinger functional in SU(3) gauge theory
(2011)The setup of the QCD Schrödinger functional (SF) on the lattice with staggered quarks requires an even number of points L/a in the spatial directions, while the Euclidean time extent of the lattice, T/a, must be odd. ...