Zobrazeno 1 - 10
of 328
pro vyhledávání: '"Vlachos N"'
Publikováno v:
Eur.Phys.J.C 81 (2021) 1, 35
We study low energy implications of F-theory GUT models based on $SU(5)$ extended by a $U(1)'$ symmetry which couples non-universally to the three families of quarks and leptons. This gauge group arises naturally from the maximal exceptional gauge sy
Externí odkaz:
http://arxiv.org/abs/2007.05936
The investigation of the role of finite groups in flavor physics and particularly, in the interpretation of the neutrino data has been the subject of intensive research. Motivated by this fact, in this work we derive the three-dimensional unitary rep
Externí odkaz:
http://arxiv.org/abs/1612.06161
Publikováno v:
Phys. Rev. D 95, 065029 (2017)
We study the three-dimensional $U(N)$ Gross-Neveu and CP$^{N-1}$ models in the canonical formalism with fixed $U(1)$ charge. For large-$N$ this is closely related to coupling the models to abelian Chern-Simons in a monopole background. We show that t
Externí odkaz:
http://arxiv.org/abs/1608.07795
Autor:
Leontaris, G. K., Vlachos, N. D.
We investigate the possibility of expressing the charged leptons and neutrino mass matrices as linear combinations of generators of a single finite group. Constraints imposed on the resulting mixing matrix by current data restrict the group types, bu
Externí odkaz:
http://arxiv.org/abs/1309.5785
Assuming the existence of a functional relation among the Standard Model (SM) couplings gauge $\alpha_1$ and quartic $\lambda$, we determine the mass of the Higgs particle. Similar considerations for the top and bottom Yukawa couplings in the minimal
Externí odkaz:
http://arxiv.org/abs/1111.6199
Autor:
Leontaris, G. K., Vlachos, N. D.
In F-theory GUTs, threshold corrections from Kaluza-Klein massive modes arising from gauge and matter multiplets play an important role in the determination of the weak mixing angle and the strong gauge coupling of the effective low energy model. In
Externí odkaz:
http://arxiv.org/abs/1105.1858
Autor:
Leontaris, G. K., Vlachos, N. D.
Publikováno v:
Phys.Lett.B702:34-42,2011
The solar and baseline neutrino oscillation data suggest bimaximal neutrino mixing among the first two generations, and trimaximal mixing between all three neutrino flavors. It has been conjectured that this indicates the existence of an underlying s
Externí odkaz:
http://arxiv.org/abs/1103.6178
Publikováno v:
Phys.Lett.B694:410-416,2011
We consider quantum mechanical effects of the modified Newtonian potential in the presence of extra compactified dimensions. We develop a method to solve the resulting Schroedinger equation and determine the energy shifts caused by the Yukawa-type co
Externí odkaz:
http://arxiv.org/abs/1008.0765
In the present work we perform a phenomenological analysis of the effective low energy models with Pati-Salam (PS) gauge symmetry derived in the context of D-branes. A main issue in these models arises from the fact that the right-handed fermions and
Externí odkaz:
http://arxiv.org/abs/1002.2937
Autor:
Leontaris, G. K., Vlachos, N. D.
Publikováno v:
JHEP 1001:016,2010
In this paper, the issues of the quark mass hierarchies and the Cabbibo Kobayashi Maskawa mixing are analyzed in a class of intersecting D-brane configurations with Standard Model gauge symmetry. The relevant mass matrices are constructed taking into
Externí odkaz:
http://arxiv.org/abs/0909.4701