# Electroweak phase transition via Dilaton in Two-Time Physics

## TL;DR

This paper explores how a two-time physics model with a Dilaton field can induce a first-order electroweak phase transition at 200 GeV, potentially linking extra dimensions to early universe phenomena.

## Contribution

It introduces a novel 2T model framework with a Dilaton that triggers a first-order EWPT, differing from the Standard Model and suggesting extra dimensions influence phase transitions.

## Key findings

- EWPT is first-order at 200 GeV
- Dilaton mass range is 345-625 GeV
- Extra dimensions may source EWPT

## Abstract

The Two-time model (2T model) has six dimensions with two dimensions of time, has a Dilaton particle that makes the symmetry breaking differently from the Standard Model. Assuming a soft break of $SP(2,R)$ 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 $1 - 3.08$ and the mass of Dilaton is in the interval $[345,625]$ GeV. Therefore, the 2T-model indirectly suggests that extra-dimension can also be a source of EWPT.