Particle physics is one of fields studying nature that is described by the fundamental interactions of elementary particles, which are the irreducibly smallest particles.
In 2012, the standard model (SM) is succesfully demonstarted from the discovery of Higgs boson in the Large Hadron Collider(LHC). Despite of the establishment of the SM, there are a lot of problems that can't be explained by the SM, such as neutrino oscillation, matter dominance in our universe, dark matter, inflation, etc. For this reason, particle physicists highly expect new physics beyond the SM.
The major interests of Prof.Seong Youl Choi Laboratory room are model-independent analysis to be applied into every possible particle physics phenomena and, spin and dynamical structure analysis to be applied to collider physics.
Prof. Seodong Shin's research group conducts research on a new dark matter theory beyond WIMP, and conducts phenomenological research on experimental and observational results that can verify the theories. In particular, we intend to proceed with a study on a new type of signal that was missed in the experimental method focused on the existing WIMP candidates.
Introduction of researches at Prof. Wanil Park's cosmo lab. We are interested in cosmology of the early universe, which is about theoretical scenarios to explain the present state of the universe by reconstructing the history of the universe from around Planck time to the present.
(1) what is the natural model of inflation which is a cornerstone of modern cosmology and responsible for the large scale homogeneity and small scale inhomogeneity of the present universe? (2) how can the universe be asymmetric for matter and anti-matter? (3) what is the nature of dark matter? (4) how can we explain the present accelerated expansion of the Universe in a natural manner? (5) what kinds of observables can leave traces of various phenomena in the very early universe? (6) what kind of cosmological implications do various high energy theories have? (7) the nature of electroweak symmetry breaking and its cosmological implications (8) conformal field theory and its implications on the early universe cosmology (9) implications of hidden sector Most of these questions are tackled theoretically in the framework of theories beyond the standard model of particle physics.
Nowadays, we are paying attention to conformal theories and strongly interacting hidden sector. In both scenarios, scales can be generated dynamically (radiatively or through dimensional transmutation). Depending on details, there may be interesting new aspects for cosmology and particle physics.