2000 character limit reached
Handling Excited States on the Lattice: The GEVP Method (1101.5796v1)
Published 30 Jan 2011 in hep-lat and hep-ph
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 $1/m_b$.
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