Sphaleron Rate of Nf=2+1 QCD
We compute the sphaleron rate of Nf=2+1 QCD at the physical point for a range of temperatures 200 MeV≲T≲600 MeV. We adopt a strategy recently applied in the quenched case, based on the extraction of the rate via a modified version of the Backus-Gilbert method from finite-lattice-spacing and finite-s...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/414847 |
| Acceso en línea: | http://hdl.handle.net/10261/414847 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85184143946&doi=10.1103%2FPhysRevLett.132.051903&partnerID=40&md5=03b19d77b8d9115f31ccb15a04d07b00 |
| Access Level: | acceso abierto |
| Palabra clave: | Topology Backus-Gilbert Case based Continuum limits Dynamical fermions Euclidean Finite lattices Lattice spacing Lattice-finite Topological charge densities Topological susceptibility Correlators Artifact Charge density Controlled study Drug therapy Fermion Temperature |
| Sumario: | We compute the sphaleron rate of Nf=2+1 QCD at the physical point for a range of temperatures 200 MeV≲T≲600 MeV. We adopt a strategy recently applied in the quenched case, based on the extraction of the rate via a modified version of the Backus-Gilbert method from finite-lattice-spacing and finite-smoothing-radius Euclidean topological charge density correlators. The physical sphaleron rate is finally computed by performing a continuum limit at fixed physical smoothing radius, followed by a zero-smoothing extrapolation. Dynamical fermions were discretized using the staggered formulation, which is known to yield large lattice artifacts for the topological susceptibility. However, we find them to be rather mild for the sphaleron rate. © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3. |
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