Workshop on Physics of Dark Cosmos: dark matter, dark energy, and all

Session

BSM & Cosmology

21 Oct 2022, 15:30

Lavalse Hotel Busan 2F

Conveners

BSM & Cosmology: 1

• Seong Chan Park ()

BSM & Cosmology: 2

• Kwangsik Jeong ()

Contribution list Timetable

34. Some thoughts on natural models for inflation

Prof. Hyun Min Lee

21/10/2022, 15:30

We present some of the recent developments on natural models for inflation, with a focus on Higgs inflation and hybrid inflation with a pseudo-scalar field. Implications of new symmetry/particles in each of scenarios will be discussed.

35. Reheating and Dark Matter Freeze-in in the Higgs-R2 Inflation Model

Dr Shuntaro Aoki

21/10/2022, 16:00

The Higgs inflation perfectly agrees with the CMB observation, but suffers from a unitarity problem due to a large non-minimal coupling of Higgs field to the Ricci scalar. Recently, it has been shown that introducing a Ricci square term (R2 term) in the Higgs inflation can solve this problem. In this talk, we discuss the post-inflationary dynamics for reheating and freeze-in dark matter in the...

33. Quintessential axion

Prof. Jihn E. Kim

21/10/2022, 16:30

I will talk on quintessential axions.

62. All the covariant tensor currents of massless particles in the covariant formulation

Dr JaeHoon Jeong

23/10/2022, 14:00

We present an efficient algorithm for constructing all the covariant tensor currents of massless particles of arbitrary spins in the covariant formulation. This algorithm enables us to construct all the matrix elements as well as covariant three-point vertices simply by assembling the basic building blocks,
leading to the direct construction of tensor currents. We revisit the restrictions...

61. Trouble with geodesics in black-to-white hole bouncing scenarios

Dr Wei-Chen Lin

23/10/2022, 14:30

By utilizing the thin shell approximation, we investigate the behavior of radial timelike geodesics in a black hole to white hole bouncing scenario with a mass (de-)amplification relation. We show that those geodesics lose energy after crossing the transition surface if the white hole mass is less than the black hole mass and vice versa. That is, the bounded timelike radial geodesics become...

60. Hartle-Hawking wave function beyond the instanton approach

Prof. Dong-han Yeom

23/10/2022, 15:00

We discuss the no-boundary wave function by numerically solving the Wheeler-DeWitt equation. We report some interesting new observations.