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On the degrees of freedom of R$^{2}$ gravity in flat spacetime
/ Hell, Anamaria (Tokyo U., IPMU) ; Lust, Dieter (Munich U. ; Munich, Max Planck Inst.) ; Zoupanos, George (Munich, Max Planck Inst. ; Natl. Tech. U., Athens ; CERN ; Heidelberg U.)
We study the degrees of freedom of $R^2$ gravity in flat spacetime with two approaches. By rewriting the theory a la Stueckelberg, and implementing Lorentz-like gauges to the metric perturbations, we confirm that the pure theory propagates one scalar degree of freedom, while the full theory contains two tensor modes in addition. [...]
arXiv:2311.08216; LMU-ASC 34/23; MPP-2023-256.-
2024-02-07 - 36 p.
- Published in : JHEP 2402 (2024) 039
Fulltext: 2311.08216 - PDF; Publication - PDF;
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Reduction of couplings in the Type-II 2HDM
/ Pech, M.A. May (Mexico U.) ; Mondragón, M. (Mexico U.) ; Patellis, G. (Lisbon, CFTP ; Lisbon, IST) ; Zoupanos, G. (Natl. Tech. U., Athens ; Heidelberg U. ; Munich, Max Planck Inst. ; CERN)
The idea of reduction of couplings consists in the search for relations between seemingly independent couplings of a renormalizable theory that are renormalization group invariant. In this article, we demonstrate the existence of such 1-loop relations among the top Yukawa, the Higgs quartic and the gauge colour couplings of the Type-II Two Higgs Doublet Model at a high-energy boundary. [...]
arXiv:2310.14014.-
2023-12-14 - 7 p.
- Published in : Eur. Phys. J. C 83 (2023) 1129
Fulltext: 2310.14014 - PDF; Publication - PDF;
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Aspects of an $N=1$ split-like supersymmetric model resulting from the dimensional reduction of an $N=1$, 10$D$, $E_8$ gauge theory over a modified flag manifold
/ Patellis, Gregory (Natl. Tech. U., Athens) ; Zoupanos, George (Natl. Tech. U., Athens ; CERN ; Munich, Max Planck Inst.)
We review a supersymmetric extension of the Standard Model which originates from a 10D, N=1, E(8) gauge theory. The original theory is dimensionally reduced over the SU(3)/U(1)xU(1)xZ(3) space and, after making use of the Wilson breaking mechanism, the resulting 4D theory is an N=1, SU(3)^3xU(1)^2 Grand Unified Theory. [...]
2022 - 6 p.
- Published in : PoS: ICHEP2022, pp. 430
Fulltext: PDF;
In : 41st International Conference on High Energy Physics (ICHEP 2022), Bologna, Italy, 6 - 13 Jul 2022, pp.430
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Split NMSSM from dimensional reduction of a $10D$, $\mathcal{N}=1$$E_8$ over $SU(3)/U(1)\times U(1)\times Z_3$
/ Patellis, Gregory (Lisbon, CFTP) ; Porod, Werner (Wurzburg U.) ; Zoupanos, George (Natl. Tech. U., Athens ; Munich, Max Planck Inst. ; CERN)
We examine an extension of the Standard Model which results from a $10D$, $\mathcal{N}=1$, $E_8$ gauge theory. The theory is dimensionally reduced over a $M_4 \times B_0/ \mathbf{Z}_3 $ space, where $B_0$ is the nearly-Kähler manifold $SU(3)/U(1) \times U(1)$ and $\mathbf{Z}_3$ is a freely acting discrete group on $B_0$ that triggers a Wilson flux breaking, leading to an $\mathcal{N}=1$, $SU(3)^3\times U(1)^2$ effective theory in $4D$. [...]
arXiv:2307.10014; CERN-TH-2023-124.-
2024-01-05 - 18 p.
- Published in : JHEP 2401 (2024) 021
Fulltext: 2307.10014 - PDF; document - PDF;
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Intertwining noncommutativity with gravity and particle physics
/ Manolakos, George (Warsaw U.) ; Manousselis, Pantelis (Natl. Tech. U., Athens) ; Roumelioti, Danai (Natl. Tech. U., Athens) ; Stefas, Stelios (Natl. Tech. U., Athens) ; Zoupanos, George (Natl. Tech. U., Athens ; CERN ; Munich, Max Planck Inst. ; Heidelberg U.)
Here we present an overview on the various works, in which many collaborators have contributed, regarding the interesting dipole of noncommutativity and physics. In brief, we present the features that noncommutativity triggers both in the fields of gravity and particle physics, from a matrix-realized perspective, with the notion of noncommutative gauge theories to play the most central role in the whole picture. [...]
arXiv:2305.11785.-
2023-05-17 - 18 p.
- Published in : 10.1140/epjs/s11734-023-00830-8
Fulltext: 2305.11785 - PDF; document - PDF; Publication - PDF;
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Reducing the $N$ = 1, 10-d, \(E_8\) Gauge Theory over a Modified Flag Manifold
/ Manolakos, George (Boskovic Inst., Zagreb) ; Patellis, Gregory (Natl. Tech. U., Athens) ; Zoupanos, George (Natl. Tech. U., Athens ; CERN)
We present a split-like supersymmetric extension of the Standard Model which originates from a 10-d, N = 1, E8 gauge theory. The transition to four dimensions occurs after the dimensional reduction of the initial, higher-dimensional theory over the SU(3)/U(1)2 × Z3 space [...]
2022 - 11 p.
- Published in : Springer Proc. Math. Stat. 396 (2022) 171-181
In : 14th International Workshop on Lie Theory and Its Applications in Physics (LT-14), Sofia, Bulgaria, 20 - 26 Jun 2021, pp.171-181
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Matrix-Formulated Noncommutative Gauge Theories of Gravity
/ Manolakos, G (Warsaw U.) ; Manousselis, P (Natl. Tech. U., Athens) ; Roumelioti, D (Natl. Tech. U., Athens) ; Stefas, S (Natl. Tech. U., Athens) ; Zoupanos, G (Natl. Tech. U., Athens ; CERN ; Munich, Max Planck Inst. ; U. Heidelberg, ITP)
In the present article first we review the construction of three- and four-dimensional fuzzy spaces and subsequently we present the
construction of fuzzy gravity theories on these noncommutative spaces following the gauge theoretic formulation of gravity..
2022 - 23 p.
- Published in : PoS CORFU2021 (2022) 285
Fulltext: PDF;
In : 21st Hellenic School and Workshops on Elementary Particle Physics and Gravity, Corfu, Greece, 29 Aug - 8 Sep 2021, pp.285
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