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Phase Transitions in Particle Physics - Results and Perspectives from Lattice Quantum Chromo-Dynamics
/ Aarts, Gert (Swansea U. ; ECT, Trento ; Fond. Bruno Kessler, Trento) ; Aichelin, Joerg (SUBATECH, Nantes) ; Allton, Chris (Swansea U.) ; Athenodorou, Andreas (INFN, Pisa ; Cyprus Inst.) ; Bachtis, Dimitrios (Swansea U., Math. Dept.) ; Bonanno, Claudio (INFN, Florence ; Madrid, IFT ; Madrid, Autonoma U.) ; Brambilla, Nora (Munich, Tech. U.) ; Bratkovskaya, Elena (Darmstadt, GSI ; Frankfurt U. ; Helmholtz Res. Acad. Hesse for FAIR) ; Bruno, Mattia (Milan Bicocca U. ; INFN, Milan Bicocca) ; Caselle, Michele (Turin U.) et al.
Phase transitions in a non-perturbative regime can be studied by ab initio Lattice Field Theory methods. The status and future research directions for LFT investigations of Quantum Chromo-Dynamics under extreme conditions are reviewed, including properties of hadrons and of the hypothesized QCD axion as inferred from QCD topology in different phases. [...]
arXiv:2301.04382.-
2023-07-20 - 94 p.
- Published in : Prog. Part. Nucl. Phys. 133 (2023) 104070
Fulltext: PDF;
In : Axions across boundaries between Particle Physics, Astrophysics, Cosmology and forefront Detection Technologies, Florence, Italy, 26 Apr - 9 Jun 2023
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Hadronic observables from master-field simulations
/ Cè, Marco (Bern U.) ; Bruno, Mattia (Milan Bicocca U. ; INFN, Milan Bicocca) ; Bulava, John (DESY, Zeuthen) ; Francis, Anthony (NYCU, Hsinchu) ; Fritzsch, Patrick (Trinity Coll., Dublin ; Hamilton Math. Inst., Dublin) ; Green, Jeremy R. (DESY, Zeuthen) ; Hansen, Maxwell T. (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Rago, Antonio (Southern Denmark U., CP3-Origins ; CERN)
Substantial progress has been made recently in the generation of master-field ensembles. This has to be paired with efficient techniques to compute observables on gauge field configurations with a large volume. [...]
arXiv:2301.05156; DESY-22-207; CERN-TH-2022-215.-
2023-01-27 - 10 p.
- Published in : PoS LATTICE2022 (2023) 052
Fulltext: document - PDF; 2301.05156 - PDF;
In : 39th International Symposium on Lattice Field Theory (Lattice 2022), Bonn, Germany, 8 - 13 Aug 2022, pp.052
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Approaching the master-field: Hadronic observables in large volumes
/ Cè, Marco (CERN) ; Bruno, Mattia (Milan Bicocca U. ; INFN, Milan Bicocca) ; Bulava, John (DESY, Zeuthen) ; Francis, Anthony (CERN ; Bern U.) ; Fritzsch, Patrick (Trinity Coll., Dublin) ; Green, Jeremy R. (CERN ; Trinity Coll., Dublin) ; Hansen, Maxwell T. (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Rago, Antonio (CERN ; Plymouth U.)
The master-field approach to lattice QCD envisions performing calculations on a small number of large-volume gauge-field configurations. Substantial progress has been made recently in the generation of such fields, and this must be joined with measurement strategies that take advantage of the large volume. [...]
arXiv:2110.15375; CERN-TH-2021-164.-
2022-05-16 - 9 p.
- Published in : PoS: LATTICE2021 (2022) , pp. 383
Fulltext: document - PDF; 2110.15375 - PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.383
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Light quark masses in N_f = 2+1 lattice QCD with Wilson fermions
/ Bruno, Mattia (CERN) ; Campos, Isabel (Cantabria Inst. of Phys.) ; Fritzsch, Patrick (CERN) ; Koponen, Jonna (KEK, Tsukuba) ; Pena, Carlos (Madrid, Autonoma U. ; Madrid, IFT) ; Preti, David (INFN, Turin) ; Ramos, Alberto (Trinity Coll., Dublin) ; Vladikas, Anastassios (INFN, Rome2)
/ALPHA Collaboration
We present a lattice QCD determination of light quark masses with three sea-quark flavours ($N_f = 2+1$). Bare quark masses are known from PCAC relations in the framework of CLS lattice computations with a non-perturbatively improved Wilson-Clover action and a tree-level Symanzik improved gauge action. [...]
arXiv:1911.08025; CERN-TH-2019-174; IFT-UAM/CSIC-19-151; KEK-CP-372.-
2020-02-22 - 18 p.
- Published in : Eur. Phys. J. C
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; External link: Published fulltext
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6.
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Exclusive Channel Study of the Muon HVP
/ Bruno, Mattia (CERN) ; Izubuchi, Taku (Brookhaven ; RIKEN BNL) ; Lehner, Christoph (U. Regensburg (main) ; Brookhaven) ; Meyer, Aaron S. (Brookhaven)
The Hadronic Vacuum Polarization (HVP) is a dominant contribution to the theoretical uncertainty of the muon anomalous magnetic moment. The uncertainty in a lattice QCD calculation of the connected light-quark contribution to the HVP is dominated by the long-distance region of the vector correlation function. [...]
arXiv:1910.11745; CERN-TH-2019-179.-
SISSA, 2019-11-26 - 7 p.
- Published in : PoS LATTICE2019 (2019) 239
Fulltext: PDF;
In : 37th International Symposium on Lattice Field Theory, Wuhan, Hubei, China, 16 - 22 Jun 2019, pp.239
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The strong coupling from a nonperturbative determination of the $\Lambda$ parameter in three-flavor QCD
/ Bruno, Mattia (Brookhaven Natl. Lab.) ; Dalla Brida, Mattia (INFN, Milan Bicocca ; Milan Bicocca U.) ; Fritzsch, Patrick (CERN) ; Korzec, Tomasz (Bergische U., Wuppertal (main)) ; Ramos, Alberto (CERN) ; Schaefer, Stefan (DESY, Zeuthen ; NIC, Zeuthen) ; Simma, Hubert (DESY, Zeuthen ; NIC, Zeuthen) ; Sint, Stefan (Trinity Coll., Dublin) ; Sommer, Rainer (NIC, Zeuthen ; DESY, Zeuthen ; Humboldt U., Berlin)
/ALPHA Collaboration
We present a lattice determination of the $\Lambda$ parameter in three-flavor QCD and the strong coupling at the Z pole mass. Computing the nonperturbative running of the coupling in the range from $0.2\,$GeV to $70\,$GeV, and using experimental input values for the masses and decay constants of the pion and the kaon, we obtain $\Lambda_{\overline{\rm MS}}^{(3)}=341(12)\,$MeV. [...]
arXiv:1706.03821; CERN-TH-2017-129; DESY-17-088; WUB-17-03.-
2017-09-08 - 6 p.
- Published in : Phys. Rev. Lett. 119 (2017) 102001
Fulltext: 10.1103_PhysRevLett.119.102001 - PDF; arXiv:1706.03821 - PDF;
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The determination of $\alpha_s$ by the ALPHA collaboration
/ Bruno, Mattia (NIC, Zeuthen ; Brookhaven) ; Dalla Brida, Mattia (NIC, Zeuthen) ; Fritzsch, Patrick (Madrid, IFT ; CERN) ; Korzec, Tomasz (Wuppertal U. ; Humboldt U., Berlin) ; Ramos, Alberto (CERN) ; Schaefer, Stefan (NIC, Zeuthen) ; Simma, Hubert (NIC, Zeuthen) ; Sint, Stefan (Trinity Coll., Dublin) ; Sommer, Rainer (NIC, Zeuthen ; Humboldt U., Berlin)
/ALPHA Collaboration
We review the ALPHA collaboration strategy for obtaining the QCD coupling at high scale. In the three-flavor effective theory it avoids the use of perturbation theory at $\alpha > 0.2$ and at the same time has the physical scales small compared to the cutoff $1/a$ in all stages of the computation. [...]
arXiv:1611.05750; DESY-16-214; CERN-TH-2016-236; IFT-UAM-CSIC-16-119.-
2017-05-04 - 7 p.
- Published in : Nucl. Part. Phys. Proc. 285-286 (2017) 132-138
Fulltext: arXiv:1611.05750 - PDF; 1611.05750v1 - PDF; External link: Preprint
In : Sixth Workshop on Theory, Phenomenology and Experiments in Flavour Physics, Anacapri, Island Of Capri, Italy, 11 - 13 Jun 2016, pp.132-138
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Physical and cut-off effects of heavy sea quarks
/ Knechtli, Francesco (Wuppertal U.) ; Finkenrath, Jacob (Wuppertal U.) ; Leder, Björn (Wuppertal U.) ; Athenodorou, Andreas (Cyprus U.) ; Bruno, Mattia (NIC, Zeuthen ; DESY, Zeuthen) ; Sommer, Rainer (NIC, Zeuthen ; DESY, Zeuthen) ; Marinkovic, Marina (CERN)
We simulate a theory with two dynamical O($a$) improved Wilson quarks whose mass $M$ ranges from a factor eight up to a factor two below the charm quark mass and at three values of the lattice spacing ranging from 0.066 to 0.034 fm. This theory is a prototype to study the decoupling of heavy quarks. [...]
arXiv:1411.1239; WUP-14-14; DESY-14-209; SFB-CPP-14-86; CERN-PH-TH-2014-215; WUP 14-14; DESY 14-209; SFB-CPP-14-86; CERN-PH-TH-2014-215.-
SISSA, 2014-11-05 - 7 p.
- Published in : PoS Lattice2014 (2014) 288
Fulltext: PDF; External link: Preprint
In : 32nd International Symposium on Lattice Field Theory, Columbia U., New York, NY, USA, 23 - 28 Jun 2014, pp.288
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