electroweak phase transition; cosmology; thermal field theory; LHC discoveries; lattice Monte Carlo simulations
Laine M., Meyer M. (2015), Standard Model thermodynamics across the electroweak crossover, in JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
, (7), 035.
Within the next decade, the Large Hadron Collider (LHC) at CERN shouldsubstantially clarify the dynamics of weak interactions. Whatever theexperimental findings, they will have profound implications for ourunderstanding of Early Universe cosmology. If it is confirmed thatweak interactions are accurately described by the so-called StandardModel, then previous work indicates that Early Universe evolved"smoothly", without any phase transition. Yet, the precise detailsof the smooth evolution play an important role in some Dark Matter andLeptogenesis computations. If, on the other hand, physics Beyond theStandard Model is discovered, then there is a distinct possibilitythat the Early Universe underwent a phase transition at a temperatureof around 100 GeV, leaving the observed matter-antimatter asymmetry asa remnant. The purpose of this project is to study several theories ofweak interactions, notably the Standard Model but also well-motivatedextensions thereof, with both analytic techniques and large-scalelattice Monte Carlo simulations. The goal is to determine theirthermodynamical properties, and thus consolidate one of thecornerstones of theoretical attempts to explain the observed Universein terms of experimentally verifiable laws of nature.