Pure & Applied Mathematics (Scholarly Publications)
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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 ... 
Polynomial Filtered HMC: An Algorithm for lattice QCD with dynamical quarks
(2012)Polynomial approximations to the inverse of the fermion matrix are u sed to filter the dynamics of the upper energy scales in HMC simulations. The use of a multiple timescale integration sc heme allows the filtered ... 
Highly excited and exotic meson spectrum from dynamical lattice QCD
(2009)Using a new quarkfield construction algorithm and a large variational basis of operators, we extract a highly excited isovector meson spectrum on dynamical anisotropic lattices. We show how carefully constructed operators ... 
Excitedstate spectroscopy of singly, doubly and triplycharmed baryons from lattice QCD
(2013)We present the ground and excited state spectra of singly, doubly and triplycharmed baryons by using dynamical lattice QCD. A large set of baryonic operators that respect the symmetries of the lattice and are obtained ... 
Quillen homology for operads via Gröbner bases
(2013)The main goal of this paper is to present a way to compute Quillen homology of operads. The key idea is to use the notion of a shuffle operad we introduced earlier; this allows to compute, for a symmetric operad, the ... 
S wave bottomonium states moving in a quarkgluon plasma from lattice NRQCD
(2013)We extend our study of bottomonium spectral functions in the quarkgluon plasma to nonzero momentum. We use lattice QCD simulations with two flavours of light quark on highly anisotropic lattices and treat the bottom quark ... 
Excited and exotic charmonium spectroscopy from lattice QCD
(2012)We present a spectrum of highly excited charmonium mesons up to around 4.5 GeV calculated using dynamical lattice QCD. Employing novel computational techniques and the variational method with a large basis of carefully ... 
Excited spectroscopy of charmed mesons from lattice QCD
(2013)We present spectra of highly excited D and D s mesons up to around 3.8 GeV determined using dynamical lattice QCD. We employ novel computational techniques and the variational method with a large basis of carefully constructed ... 
Melting of P wave bottomonium states in the quarkgluon plasma from lattice NRQCD
(2013)We study the fate of P wave bottomonium states in the quarkgluon plasma, using a spectral function analysis of euclidean lattice cor relators. The correlators are obtained from lattice QCD simulations with two ...