Lauri Niemi

TL;DR: In this paper, a nonperturbative study of the electroweak phase transition in the Two Higgs Doublet model was performed using a dimensionally reduced effective theory at high temperature.

TL;DR: In this paper, a nonperturbative study of the electroweak phase transition in the two Higgs doublet model (2HDM) was performed by deriving a dimensionally reduced high-temperature effective theory for the model and matching to known results for the phase diagram of the effective theory.

TL;DR: In this article, the authors present the first end-to-end nonperturbative analysis of the gravitational wave power spectrum from a thermal first-order electroweak phase transition.

TL;DR: In this paper, the authors make a comparative analysis of the performance of conventional perturbation theory to analyze electroweak phase transition in the real triplet extension of the Standard Model and derive and present the dimensionally reduced effective theory that is suitable for numerical simulation on the lattice.

TL;DR: Two-step electroweak phase transition is found to occur in a narrow region of allowed parameter space with the second transition always being first order in a non-negligible portion of the two-step parameter space.