HEP Lattice·hep-lat
2 papers—1 primary·1 cross-listed·reconstructed*
W. Bietenholz🇩🇪 · I. Hip🇩🇪 · K. Schilling🇩🇪
In order to construct improved overlap fermions, we start from a short ranged approximate Ginsparg-Wilson fermion and insert it into the overlap formula. We show that its polynomial evaluation is accelerated considerably compared to the standard Neuberger fermion. In addition the degree of locality is strongly improved.
C. Alexandrou (Univ. of Cyprus)🇨🇾 · Ph. de Forcrand (CERN and ETH-Zurich)🇨🇭 · A. Tsapalis (Univ. of Athens)🇬🇷
Using state of the art lattice techniques we investigate the static baryon potential. We employ the multi-hit procedure for the time links and a variational approach to determine the ground state with sufficient accuracy that, for distances up to fm, we can distinguish the - and - Ansätze for the baryonic Wilson area law. Our analysis shows that the -Ansatz is favoured. This result is also supported by the gauge-invariant nucleon wave function which we measure for the first time.
* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.