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1.
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Spectrum of QCD with one flavor: A window for supersymmetric dynamics
/ Della Morte, Michele (Southern Denmark U., CP3-Origins) ; Jäger, Benjamin (Southern Denmark U., CP3-Origins ; U. Southern Denmark, Odense, DIAS) ; Sannino, Francesco (Southern Denmark U., CP3-Origins ; U. Southern Denmark, Odense, DIAS ; Naples U.) ; Tsang, Justus Tobias (CERN ; Southern Denmark U., CP3-Origins) ; Ziegler, Felix P.G. (Edinburgh U.)
We compute the spectrum of the low-lying mesonic states with vector, scalar and pseudoscalar quantum numbers in QCD with one flavour. With three colours the fundamental and the two-index anti-symmetric representations of the gauge group coincide. [...]
arXiv:2302.10514; CERN-TH-2023-028.-
2023-06-01 - 17 p.
- Published in : Phys. Rev. D 107 (2023) 114506
Fulltext: 2302.10514 - PDF; Publication - PDF;
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2.
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The θ-angle and axion physics of two-color QCD at fixed baryon charge
/ Bersini, Jahmall (Boskovic Inst., Zagreb) ; D'Alise, Alessandra (Naples U. ; INFN, Naples) ; Sannino, Francesco (Southern Denmark U., CP3-Origins ; SSM, Naples ; Naples U. ; INFN, Naples ; CERN) ; Torres, Matías (Naples U. ; INFN, Naples)
We analyze the impact of the $\theta$-angle and axion dynamics for two-color (in fact any $Sp(2N)$) QCD at nonzero baryon charge and as a function of the number of matter fields on the vacuum properties, the pattern of chiral symmetry breaking as well as the spectrum of the theory. We show that the vacuum acquires a rich structure when the underlying $CP$ violating topological operator is added to the theory. [...]
arXiv:2208.09226; RBI-ThPhys-2022-31.-
2022-11-15 - 29 p.
- Published in : JHEP 2211 (2022) 080
Fulltext: document - PDF; 2208.09226 - PDF;
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3.
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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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4.
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Exploring the large-$N_c$ limit with one quark flavour
/ Jaeger, Benjamin (Southern Denmark U., CP3-Origins ; U. Southern Denmark, Odense, DIAS) ; Della Morte, Michele (Southern Denmark U., CP3-Origins) ; Martins, Sofie (Southern Denmark U., CP3-Origins ; U. Southern Denmark, Odense, DIAS) ; Sannino, Francesco (Southern Denmark U., CP3-Origins ; U. Southern Denmark, Odense, DIAS ; Naples U.) ; Tsang, J. Tobias (Southern Denmark U., CP3-Origins ; CERN) ; Ziegler, Felix P.G. (Edinburgh U.)
We use one-flavour QCD ($N_c=3$) as a proxy to understand $\mathcal{N}=1$ SYM. For our simulations, we use tree-level improved Wilson fermions and Symanzik improved gauge action. [...]
arXiv:2212.06709; CERN-TH-2022-209.-
2023-03-02 - 9 p.
- Published in : PoS LATTICE2022 (2023) 212
Fulltext: 2212.06709 - PDF; document - PDF;
In : 39th International Symposium on Lattice Field Theory (Lattice 2022), Bonn, Germany, 8 - 13 Aug 2022, pp.212
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5.
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Charging the conformal window at nonzero <math display="inline"><mi>θ</mi></math> angle
/ Bersini, Jahmall (Boskovic Inst., Zagreb ; Tokyo U., IPMU) ; D'Alise, Alessandra (Naples U. ; INFN, Naples) ; Sannino, Francesco (Naples U. ; Southern Denmark U., CP3-Origins ; U. Southern Denmark, Odense, DIAS ; SSM, Naples ; CERN) ; Torres, Matías (Naples U.)
We determine the impact of the $\theta$-angle and axion physics on the near conformal dynamics of the large-charge baryon sector of $SU(2)$ gauge theories with $N_f$ fermions in the fundamental representation. We employ an effective approach featuring Goldstone and dilaton degrees of freedom augmented by the topological terms in the theory. [...]
arXiv:2208.09227; RBI-ThPhys-2022-32.-
2023-06-15 - 18 p.
- Published in : Phys. Rev. D 107 (2023) 12
Fulltext: 2208.09227 - PDF; JHEP11(2022)080 - PDF;
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6.
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Standard model anomalies: Lepton flavour non-universality and lepton $g-2$
/ D'Alise, Alessandra (Naples U. ; INFN, Naples) ; De Nardo, Guglielmo (Naples U. ; INFN, Naples) ; Di Luca, Maria Grazia (Naples U. ; INFN, Naples ; SSM, Naples) ; Fabiano, Giuseppe (INFN, Naples ; Naples U.) ; Frattulillo, Domenico (Naples U. ; INFN, Naples) ; Gaudino, Giovanni (INFN, Naples ; Naples U. ; SSM, Naples) ; Iacobacci, Davide (Naples U. ; INFN, Naples ; Orsay, LPTMS) ; Merola, Mario (INFN, Naples ; Naples U.) ; Sannino, Francesco (Naples U. ; INFN, Naples ; SSM, Naples ; Southern Denmark U., CP3-Origins ; U. Southern Denmark, Odense, DIAS ; CERN) ; Santorelli, Pietro (INFN, Naples ; Naples U.) et al.
We critically analyze the body of results that hints to the existence of New Physics from possible violations of lepton universality observed by the LHCb experiment in the $\mu/e$ ratios $R_{K}$ and $R_{K^*}$ to the $g-2$ lepton anomalies. The analysis begins with a theoretical, in depth, study of the $\mu/e$ ratios $R_{K}$ and $R_{K^*}$ as well as the process $B_s \rightarrow \mu^+ \mu^-$. [...]
arXiv:2204.03686; CERN-TH-2022-063.-
2022-08-10 - 48 p.
- Published in : JHEP 2208 (2022) 125
Fulltext: document - PDF; 2204.03686 - PDF;
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Effective theory of quantum black holes
/ Binetti, Emanuele (Naples U.) ; Del Piano, Manuel (SSM, Naples ; INFN, Naples) ; Hohenegger, Stefan (IP2I, Lyon) ; Pezzella, Franco (INFN, Naples) ; Sannino, Francesco (Naples U. ; SSM, Naples ; INFN, Naples ; Southern Denmark U., CP3-Origins ; CERN)
We explore the quantum nature of black holes by introducing an effective framework that takes into account deviations from the classical results. The approach is based on introducing quantum corrections to the classical Schwarzschild geometry in a way that is consistent with the physical scales of the black hole and its classical symmetries. [...]
arXiv:2203.13515; CERN-TH-2022-048.-
2022-08-15 - 15 p.
- Published in : Phys. Rev. D 106 (2022) 046006
Fulltext: 2203.13515 - PDF; PhysRevD.106.046006 - PDF;
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9.
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The analytic structure of the fixed charge expansion
/ Antipin, Oleg (Boskovic Inst., Zagreb) ; Bersini, Jahmall (Boskovic Inst., Zagreb) ; Sannino, Francesco (Southern Denmark U., CP3-Origins ; SSM, Naples ; Naples U. ; INFN, Naples ; CERN) ; Torres, Matías (Naples U. ; INFN, Naples)
We investigate the analytic properties of the fixed charge expansion for a number of conformal field theories in different space-time dimensions. The models investigated here are $O(N)$ and $QED_3$. [...]
arXiv:2202.13165; RBI-ThPhys-2022-6; CERN-TH-2022-049.-
2022-06-08 - 24 p.
- Published in : JHEP 2206 (2022) 041
Fulltext: document - PDF; 2202.13165 - PDF;
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