Work

New extended interpolating fields built from three-dimensional fermions

Year: 2018

Type: article

Abstract: New extended interpolating operators made of quenched three-dimensional fermions are introduced in the context of lattice QCD. The mass of the 3D fermions can be tuned in a controlled way to find a better overlap of the extended operators with the states of interest. The extended operators have good renormalization properties and are easy to control when taking the continuum limit. Moreover, the short distance behavior of the two point functions built from these operators is greatly improved with respect to Jacobi smeared sources and point sources. A numerical comparison with point sources and Jacobi smeared sources on dynamical $2+1$ flavor configurations is presented.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.98.094506

Authors: Mauro Papinutto, Francesco Scardino, Stefan Schaefer

Institutions: Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica Nucleare, Sezione di Roma I, Sapienza University of Rome, Deutsches Elektronen-Synchrotron DESY, John von Neumann Institute for Computing

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: Ministero dell’Istruzione, dell’Università e della Ricerca, Instituto Nazionale di Fisica Nucleare

Award: Simmetrie, Masse e Misteri: Rottura della simmetria elettrodebole, Mescolamento dei sapori e violazione di CP e Materia oscura nell'era di LHC.