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The lattice technique of studying the strong interaction of matter is used to obtain predictions of the hadronic spectrum. These simulations were performed by the UKQCD collaboration using full (unquenched) QCD. Details of the results, a comparison with quenched data, and novel methods of extracting spectral properties are described. The lattice technique… (More)

- C. R. Allton
- 2005

We present results of a simulation of QCD on a 16 × 4 lattice with 2 continuum flavors of p4-improved staggered fermion with mass m/T = 0.4. Derivatives of the thermodynamic grand potential Ω with respect to quark chemical potential μq up to fourth order are calculated, enabling estimates of the pressure, quark number density and associated susceptibilities… (More)

The properties of hadrons or hadronic resonances above the deconfinement transition is a subject at the heart of the current experimental program at the Relativistic Heavy-Ion Collider (RHIC). Questions of interest include the issue of which hadrons survive as bound states in the quark-gluon plasma, and up to which temperature; as well as the transport… (More)

- Chris Allton, Michael Teper, Aurora Trivini
- 2008

Interpreting the way that the SU(3) bare lattice coupling runs with the lattice spacing is complicated by the fact that there is a smooth cross-over region in which the strong coupling expansion transforms into a weak-coupling one. For N ≥ 5, however, there is a first order bulk transition that cleanly separates the strong and weak coupling regimes. We find… (More)

Using the results of several quenched lattice simulations, we predict the value of the strange and charm quark masses in the continuum at the next-to-leading order, mMS s (μ = 2 GeV) = (128 ± 18) MeV and mMS ch (μ = 2 GeV) = (1.48±0.28) GeV. The errors quoted above have been estimated by taking into account the original statistical error of the lattice… (More)

- Alessandro Amato, Gert Aarts, Chris Allton, Pietro Giudice, Simon Hands, Jon-Ivar Skullerud
- Physical review letters
- 2013

A lattice calculation is presented for the electrical conductivity σ of the QCD plasma with 2+1 dynamical flavors at nonzero temperature. We employ the conserved lattice current on anisotropic lattices using a tadpole-improved clover action and study the behavior of the conductivity over a wide range of temperatures, both below and above the deconfining… (More)

- C. R. Allton, L. Giusti, F. Rapuano
- 1996

In this paper we study O(2000) (quenched) lattice configurations from the APE collaboration, for different lattice volumes and for 6.0 ≤ β ≤ 6.4 using both the Wilson and the SW-Clover fermion actions. We determine the light hadronic spectrum and meson decay constants and study the mesonic dispersion relation. We extract the hadronic variable J and the… (More)

The vector meson mass is extracted from a large sample of partially quenched, two-flavor lattice QCD simulations. For the first time, discretisation, finite-volume and partial quenching artefacts are treated in a unified framework which is consistent with the low-energy behaviour of QCD. This analysis incorporates the leading infrared behaviour dictated by… (More)

- Chris Allton
- 2000

The lattice technique of studying the strong interaction of matter is used to obtain predictions of the hadronic spectrum. These simulations were performed by the UKQCD collaboration using full (unquenched) QCD. Details of the results, a comparison with quenched data, and novel methods of extracting spectral properties are described.

- Gert Aarts, Chris Allton, Justin Foley, Simon Hands, Seyong Kim
- Physical review letters
- 2007

In lattice QCD, the maximum entropy method can be used to reconstruct spectral functions from Euclidean correlators obtained in numerical simulations. We show that at finite temperature the most commonly used algorithm, employing Bryan's method, is inherently unstable at small energies and gives a modification that avoids this. We demonstrate this approach… (More)