Abstract
The two-time model (2T model) has six dimensions with two dimensions of time, and has a dilaton particle that makes the symmetry breaking different from the Standard Model. Assuming a soft break of [Formula: see text] symmetry, the 2T extension can give a suitable picture of the matter–antimatter asymmetry by the baryogenesis scenario. By reducing the 2T metric to the Minkowski metric (1T metric) and using a new form of dilaton potential, we consider the electroweak phase transition picture in the 2T model with the dilaton as a trigger. Our analysis shows that electroweak phase transition (EWPT) is a first-order phase transition at the 200-GeV scale, its strength is about 1–[Formula: see text] and the mass of dilaton is in the interval [Formula: see text] GeV. Therefore, the 2T model indirectly suggests that extra dimension can also be a source of EWPT.
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