Autor: |
Matteo Bresciani, Mattia Dalla Brida, Leonardo Giusti, Michele Pepe, Federico Rapuano |
Jazyk: |
angličtina |
Rok vydání: |
2022 |
Předmět: |
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Zdroj: |
Physics Letters B, Vol 835, Iss , Pp 137579- (2022) |
Druh dokumentu: |
article |
ISSN: |
0370-2693 |
DOI: |
10.1016/j.physletb.2022.137579 |
Popis: |
We compute non-perturbatively the renormalization constant of the flavour-singlet local vector current ZV in lattice QCD with 3 massless flavours. Gluons are discretized by the Wilson plaquette action while quarks by the O(a)-improved Wilson–Dirac operator. The constant ZV is fixed by comparing the expectation values (1-point functions) of the conserved and local vector currents at finite temperature in the presence of shifted boundary conditions and at non-zero imaginary chemical potential. Monte Carlo simulations with a moderate computational cost allow us to obtain ZV with an accuracy of about 8‰ for values of the inverse bare coupling constant β=6/g02 in the range 5.3≤β≤11.5. |
Databáze: |
Directory of Open Access Journals |
Externí odkaz: |
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