2026 CAU-IBS Beyond the Standard Model Workshop

Session

Inflation & GW

Not scheduled

Chung-Ang University

38. Cosmological Collider Physics

Masahide Yamaguchi (Tokyo Institute of Technology)

28. Dark Matter from Inflation and Reheating

Prof. Marcos A. Garcia Garcia (Instituto de Fisica, UNAM)

34. Gravitational production in the early Universe

Yann Mambrini

35. Is leptogenesis during gravitational reheating flavourful?

Arghyajit Datta

40. Model building aspects of cosmological collider

Shuntaro AOKI

The cosmological collider program, which aims to extract direct information about heavy particles during inflation via primordial non-Gaussianity, has attracted attention as it offers a window into high-energy physics beyond the reach of terrestrial experiments. However, analyses based on concrete particle physics models remain limited, and it is still unclear under what conditions a large...

47. Modern Computational Approaches to Early Universe Modeling

Jong-Hyun Yoon

In physics, while analytical calculations remain appealing, there are situations where the use of computers becomes indispensable. A straightforward example is the three-body problem, where even the interactions of just three bodies are challenging to solve analytically. This necessity is similarly evident in studies of the early universe. Understanding the dynamics of the inflaton requires...

29. Probing Dark Matter with Gravitational-Wave Detectors in Space

Dr Yong Tang (University of Chinese Academy of Sciences)

30. Quantum aspects of inflationary gravitational waves

Jinn-Ouk Gong

39. Quintessence Inflaton

Prof. Seong Chan Park (Yonsei University)

33. Reconciling cosmological tensions with inelastic dark matter and dark radiation

SATYABRATA MAHAPATRA (Sungkyunkwan University)

In this talk I will introduce a novel particle physics framework addressing multiple cosmological tensions, including discrepancies in the Hubble parameter, S8, and Lyman-\alpha forest data. This model, SIDR+z_t (Self-Interacting Dark Radiation with transition redshift), features an inelastic dark matter (IDM) scenario coupled with dark radiation under a dark gauge symmetry. The model...

36. UV Freeze-In Dark Matter in General Reheating Scenarios

Dr Kuldeep Deka (New York University Abu Dhabi)

The dynamics of cosmic reheating, that is, on how the energy stored in the inflaton is transferred to the standard model (SM) thermal bath, is largely unknown. In this work, we show that the phenomenology of the nonbaryonic dark matter (DM) ultraviolet freeze-in production strongly depends on the dynamics of the cosmic-reheating era. Using a general parametrization for the Hubble expansion...