Handling Excited States on the Lattice: The GEVP Method

Tereza Mendes

Handling Excited States on the Lattice: The GEVP Method

High Energy Physics - Lattice 2011-02-01 v1 High Energy Physics - Phenomenology

Authors: Tereza Mendes

Abstract

High-precision calculations of hadron spectroscopy are a crucial task for Lattice QCD. State-of-the-art techniques are needed to disentangle the contributions from different energy states, such as solving the generalized eigenvalue problem (GEVP) for zero-momentum hadron correlators in an efficient way. We review the method and discuss its application in the determination of the $B_s$ -meson spectrum using (quenched) nonperturbative HQET at order $1/m_b$ .

Keywords

lattice QCD generalized eigenvalue problem excited states hadron spectroscopy heavy quark effective theory B_s meson

Cite

@article{arxiv.1101.5796,
  title  = {Handling Excited States on the Lattice: The GEVP Method},
  author = {Tereza Mendes},
  journal= {arXiv preprint arXiv:1101.5796},
  year   = {2011}
}

Comments

Talk presented at Excited QCD 2010, 31 Jan to 6 Feb 2010, Stara Lesna, Slovakia; 6 pp., 1 figure

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