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9 papers · 1 filter
Gauge Coupling Unification and the Top Mass in String Models with Symmetry
G. K. Leontaris, N. D. Tracas
We discuss the low energy implications of gauge coupling unification at the string scale, taking into account string threshold corrections in the model. We ex…
The Top-Bottom Hierarchy from Gauge-Yukawa Unification
Jisuke Kubo, Myriam Mondragon, George Zoupanos
The idea of Gauge-Yukawa Unification (GYU) based on the principle of reduction of couplings is elucidated. We show how the observed top-bottom mass hierarchy can be explained in te…
Results from 3D Electroweak Phase Transition Simulations
K. Farakos, K. Kajantie, M. Laine +2
We study the phase transition in SU(2)-Higgs model on the lattice using the 3D dimensionally reduced formalism. The 3D formalism enables us to obtain highly accurate Monte Carlo re…
Infinite-dimensional algebras in dimensionally reduced string theory
Alexandros A. Kehagias
We examine 4-dimensional string backgrounds compactified over a two torus. There exist two alternative effective Lagrangians containing each two sigma-models. Two of t…
Two and Three-Dimensional Spin Systems with Gonihedric Action
G. K. Bathas, E. Floratos, G. K. Savvidy +1
We perform numerical simulations of the two and three-dimensional spin systems with competing interaction. They describe the model of random surfaces with linear-gonihedric action.…
Soft SUSY Masses and the Dynamical Determination of the Gravitino Mass
G. K. Leontaris, N. D. Tracas
We discuss in detail the possibility of determining dynamicaly the gravitino mass , which is related to the supersymmetry breaking scale, within the minimal supersymmetric…