CTPU-KNU Workshop on Particles, Gravitation and Cosmology

Asia/Seoul
Room 308, Du-dream center (Kunsan National University)

Room 308, Du-dream center

Kunsan National University

558, Daehak-ro, Gunsan-si, Jeollabuk-do, Republic of Korea
Kiwoon Choi (IBS-CTPU), Sang Pyo KIM (Kunsan National University), Sanghyeon Chang (IBS-CTPU), Tae Hyun Jung (IBS CTPU)
Description

CTPU-KNU Workshop on Particles, Gravitation and Cosmology is a collaboration meeting between the Center for Theoretical Physics of the Universe (CTPU) at Institute for Basic Science (IBS) and the Physics department of Kunsan National University. Various topics in particle physics, string theory, and cosmology will be discussed during the workshop. 


 

Topics

  • Physics Beyond the Standard Model
  • Dark Matter 
  • String Theory and Fields
  • Gravitation
  • Astroparticle Physics and Cosmology

 

 

Invited speakers 

  • Christian Schubert
  • Gungwon Gang
  • Boegun Gwak
  • Chul Min Kim
  • KeunYoung Kim
  • Seong Chan Park
  • Seodong Shin

 

 

Venue

Kunsan National University  (location)


Sponsored by

 

 

 

 

Registration
Registration
    • 13:30 15:00
      Session 1
      • 13:30
        Junichiro Kawamura 30m
      • 14:00
        Mehedi Masud 30m
      • 14:30
        Adil Jueid 30m
    • 16:00 17:00
      session 2
      • 16:00
        Takahiro Terada 30m
      • 16:30
        Junsei Tokuda 30m
    • 09:00 10:00
      colloquium
      • 09:00
        Christian Schubert - An Overview of the Worldline Formalism 1h

        Title: An Overview of the Worldline Formalism

        Abstract: I will give a short review of the worldline formalism, with an emphasis on recent developments.
        In Part 1 I will first discuss the basics of the formalism for the prototypical case of quantum electrodynamics.
        Nonabelian gauge theory will be treated next, including Ball-Chiu form factors and recent applications to Berends-Giele currents and color-kinematics duality. The extension to other standard model couplings will be shortly presented, using the examples of axion and Higgs decay into two photons.
        Part 2 will be devoted to gravity and curved space. Here I will discuss both the worldline approach and the string-based formalism of Bern-Dunbar-Shimada. Finally, I will also give a short introduction to the closely related worldline approach to classical black hole scattering.

    • 11:00 12:00
      Session 1
      • 11:00
        Tae Hyun Jung 30m
      • 11:30
        Jong-Wan Lee 30m
    • 14:00 15:00
      session 2
      • 14:00
        Seong Chan Park - Festina-Lente bound, Higgs vacuum structure and more 30m

        Title: Festina-Lente bound, Higgs vacuum structure and more

        Abstract: The recently suggested Festina-Lente (FL) bound provides a lower bound on the masses of U(1) charged particles in terms of the positive vacuum energy. Since the charged particle masses in the Standard Model (SM) are generated by the Higgs mechanism, the FL bound provides a testbed of consistent Higgs potentials in the current dark energy-dominated universe as well as during inflation. We study the implications of the FL bound on the UV behavior of the Higgs potential for a miniscule vacuum energy, as in the current universe.

      • 14:30
        Seodong Shin - Manifesting hidden dynamics of a sub-component dark matter 30m

        Title: Manifesting hidden dynamics of a sub-component dark matter

        Abstract: A distinctive cosmological dynamics of a sub-component dark matter will be discussed. The thermal evolution of the sub-component is significantly affected by the sizable self-scattering and the required annihilation cross section of the sub-component sharply increases as we consider a smaller relative abundance fraction among the dark-matter species. Therefore, contrary to a naive expectation, it can be easier to detect the sub-component with smaller abundance fractions in direct/indirect-detection experiments and cosmological observations.

    • 16:00 17:30
      session 3
      • 16:00
        Miok Park 30m
      • 16:30
        Chul Min Kim - All-optical Demonstration of Nonlinear Compton Scattering: QED of Strong Fields 30m

        All-optical Demonstration of Nonlinear Compton Scattering: QED of Strong Fields

      • 17:00
        Boegun Gwak 30m
    • 09:00 10:30
      Session 1
      • 09:00
        Pablo Soler 30m
      • 09:30
        Keun Young Kim - Comments on quantum chaos and complexity 30m

        Title: Comments on quantum chaos and complexity

      • 10:00
        Boris Latosh 30m
    • 11:00 12:00
      session 2
      • 11:00
        Gungwon Gang - Numerical studies for black hole encounters 30m

        Title: Numerical studies for black hole encounters

        Abstract: Black hole binary mergers have been playing an important role in exploring a new world seen by gravitational waves. Gravitational wave events from non-circular mergers or black hole encounters in general are expected to be observed as the sensitivity of current detectors are improved at low frequencies. In this talk, we present some of the main results in numerical studies for dynamical black hole captures, highly eccentric encounters and extremly close encounters of two black holes.

      • 11:30
        Chan Park 30m