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The supersymmetric $SU(6)$ model equipped by the flavour-blind discrete gauge symmetry $Z_3$ is considered. It provides simultaneous solution to the doublet-triplet splitting problem, $\mu$-problem and leads to natural understanding of…

High Energy Physics - Phenomenology · Physics 2016-09-01 Zurab Berezhiani

A descriptive summary is given of the results to-date from the framed standard model (FSM) which: (i) assigns geometric meaning to the Higgs field and to fermion generations, hence offering an explanation for the observed mass and mixing…

High Energy Physics - Phenomenology · Physics 2019-01-30 José BORDES , CHAN Hong-Mo , TSOU Sheung Tsun

In this talk, we present a minimal viable scenario that unifies the gauge symmetries of the Standard Model (SM) and their breaking sector. Our Gauge-Higgs Grand Unification setup employs 5D warped space with a $SU(6)$ bulk gauge field that…

High Energy Physics - Phenomenology · Physics 2021-09-30 Andrei Angelescu , Andreas Bally , Simone Blasi , Florian Goertz

We present an analysis of the Dirac equation when the spin symmetry is changed from SU(2) to the quaternion group, $Q_8$, achieved by multiplying one of the gamma matrices by the imaginary number, $i$. The reason for doing this is to…

General Physics · Physics 2025-04-01 Bryan Sanctuary

The connection between spin and symmetry was established by Wigner in his 1939 paper on the Poincar\'e group. For a massive particle at rest, the little group is O(3) from which the concept of spin emerges. The little group for a massless…

Quantum Physics · Physics 2009-11-07 Y. S. Kim

Spinor structure and internal symmetries are considered within one theoretical framework based on the generalized spin and abstract Hilbert space. Complex momentum is understood as a generating kernel of the underlying spinor structure. It…

Mathematical Physics · Physics 2015-12-07 V. V. Varlamov

In the standard model matter fields form complete representations of a grand unified group whereas Higgs fields belong to incomplete `split' multiplets. This remarkable fact is naturally explained by `local grand unification' in…

High Energy Physics - Phenomenology · Physics 2007-05-23 Wilfried Buchmuller , Koichi Hamaguchi , Oleg Lebedev , Michael Ratz

We propose that the electroweak and flavour quantum numbers of the Standard Model (SM) could be unified at high energies in an $SU(4)\times Sp(6)_L \times Sp(6)_R$ anomaly-free gauge model. All the SM fermions are packaged into two…

High Energy Physics - Phenomenology · Physics 2022-10-19 Joe Davighi , Joseph Tooby-Smith

The gauge symmetry of the Standard Model is SU(3)_c x SU(2)_L x U(1)_Y for unknown reasons. One aspect that can be addressed is the low dimensionality of all its subgroups. Why not much larger groups like SU(7), or for that matter, SP(38)…

High Energy Physics - Phenomenology · Physics 2016-12-30 Guillermo Garcia Fernandez , Jesus Guerrero Rojas , Felipe J. Llanes-Estrada

Those fundamental physical properties, such as phase transitions, Weyl fermions, and spin excitation, in all magnetic ordered materials, were ultimately believed to rely on the symmetry theory of magnetic space groups. Recently, it has come…

Materials Science · Physics 2024-09-04 Xiaobing Chen , Jun Ren , Yanzhou Zhu , Yutong Yu , Ao Zhang , Pengfei Liu , Jiayu Li , Yuntian Liu , Caiheng Li , Qihang Liu

This paper represents a first attempt at unifying two promising models that attempt to explain the origin of the internal symmetries of leptons and quarks. It is shown that each of the four normed division algebras over the reals admits a…

General Physics · Physics 2018-07-04 Niels G. Gresnigt

After we study the 6-dimensional ${\cal N} = (1, 1)$ supersymmetry breaking and $R$ symmetry breaking on $M^4\times T^2/Z_n$, we construct two ${\cal N} = (1, 1)$ supersymmetric $E_6$ models on $M^4\times T^2/Z_3$ where $E_6$ is broken down…

High Energy Physics - Phenomenology · Physics 2014-11-17 Tianjun Li

One of the main goals of these notes is to explain how rotations in reals^n are induced by the action of a certain group, Spin(n), on reals^n, in a way that generalizes the action of the unit complex numbers, U(1), on reals^2, and the…

General Mathematics · Mathematics 2014-09-30 Jean Gallier

We conjecture how the particle content of the standard model can emerge starting with a supersymmetric Wess-Zumino model in 1+1 dimensions (d = 2) with three real boson and fermion fields. Considering SU(3) transformations, the lagrangian…

High Energy Physics - Phenomenology · Physics 2016-01-12 P. J. Mulders

We consider a matrix space based on the spin degree of freedom, describing both a Hilbert state space, and its corresponding symmetry operators. Under the requirement that the Lorentz symmetry be kept, at given dimension, scalar symmetries,…

High Energy Physics - Theory · Physics 2015-12-17 J. Besprosvany , R. Romero

We present a minimal model for particle physics and cosmology. The Standard Model (SM) particle content is extended by three right-handed SM-singlet neutrinos N_i and a vector-like quark Q, all of them being charged under a global lepton…

High Energy Physics - Phenomenology · Physics 2016-10-18 Andreas Ringwald

In this paper, we move from a "proof of concept" to challenging predictions in a flavour model emerging from a single fermion family in six dimensions (6-D) with the two extra dimensions compactified on a sphere. The most striking…

High Energy Physics - Phenomenology · Physics 2013-08-21 J. -M. Frere , M. Libanov , S. Mollet , S. Troitsky

We discuss a global anomaly associated with the coupling of chiral Weyl fermions to gravity. The Standard Model based upon $SU(3){\times}SU(2){\times}{U(1)}$ which has 15 fermions per generation is shown to be inconsistent if all background…

High Energy Physics - Theory · Physics 2007-05-23 Lay Nam Chang , Chopin Soo

The quintet of Dirac $4\times 4$ matrices suggests that the fundamental dimension of the internal (spin) space is $n=5$, instead of the conventional dimension $n=4$. Then extending the usual $4\times 4$ tetrads (vierbein), gravity is…

General Relativity and Quantum Cosmology · Physics 2024-03-28 Yuri N. Obukhov , G. E. Volovik

Higgs sector of the Standard model (SM) is replaced by the gauge $SU(3)_f$ quantum flavor dynamics (QFD) with one parameter, the scale $\Lambda$. Anomaly freedom of QFD demands extension of the fermion sector of SM by three sterile…

High Energy Physics - Phenomenology · Physics 2019-03-26 Jiri Hosek
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