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2010•arXiv (Cornell University)Open access

Towards the N_f=2 deconfinement transition temperature with O(a)\n improved Wilson fermions

Bastian B. Brandt, Owe Philipsen, Hartmut Wittig, Lars Zeidlewicz

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Abstract

A lot of effort in lattice simulations over the last years has been devoted\nto studies of the QCD deconfinement transition. Most state-of-the-art\nsimulations use rooted staggered fermions, while Wilson fermions are affected\nby large systematic uncertainties, such as coarse lattices or heavy sea quarks.\nHere we report on an ongoing study of the transition, using two degenerate\nflavours of nonperturbatively $\\Ord(a)$ improved Wilson fermions. We start with\n$N_{t}=12$ and 16 lattices and pion masses of 600 to 450 MeV, aiming at chiral\nand continuum limits with light quarks.\n

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A lot of effort in lattice simulations over the last years has been devoted\nto studies of the QCD deconfinement transition. Most state-of-the-art\nsimulations use rooted staggered fermions, while Wilson fermions are affected\nby large systematic uncertainties, such as coarse lattices or heavy sea quarks.\nHere we report on an ongoing study of the transition, using two degenerate\nflavours of nonperturbatively $\\Ord(a)$ improved Wilson fermions. We start with\n$N_{t}=12$ and 16 lattices and pion masses of 600 to 450 MeV, aiming at chiral\nand continuum limits with light quarks.\n

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Available abstract

A lot of effort in lattice simulations over the last years has been devoted\nto studies of the QCD deconfinement transition. Most state-of-the-art\nsimulations use rooted staggered fermions, while Wilson fermions are affected\nby large systematic uncertainties, such as coarse lattices or heavy sea quarks.\nHere we report on an ongoing study of the transition, using two degenerate\nflavours of nonperturbatively $\\Ord(a)$ improved Wilson fermions. We start with\n$N_{t}=12$ and 16 lattices and pion masses of 600 to 450 MeV, aiming at chiral\nand continuum limits with light quarks.\n

Key concepts: Deconfinement, Fermion, Physics, Quark, Particle physics, Pion, Lattice QCD, Degenerate energy levels

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