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IBS CTPU-CGA 2025 Summer School and Workshop for High Energy Physics and Cosmology in Korea

28 July 2025 to 1 August 2025
Jeonju, Best Western Hotel
Asia/Seoul timezone

Contribution List

32 out of 32 displayed
  1. 3. Lie, Noether, Kosmann, and Diffeomorphism Anomalies Revisited
    Prof. Piljin Yi (KIAS)
    29/07/2025, 10:00
  2. 11. Energy-Momentum via Lie and Kosmann
    Taeyeon Kim (SNU/KIAS)
    29/07/2025, 10:35
  3. 4. Cosmology from measurements of the matter-radiation-equality scale
    Prof. David Parkinson (KASI)
    29/07/2025, 11:30
  4. 12. Delensing CMB B-modes with Rubin LSST survey
    Chandra Shekhar Saraf (KASI)
    29/07/2025, 12:05
  5. 5. Emergent Spacetime from Large N Model
    Junggi Yoon (Kyunghee U)
    29/07/2025, 14:30
  6. 13. Krylov Complexity in Quantum Field Theories and Cosmology
    Vinay Malvimat (Kyunghee U)
    29/07/2025, 15:05
  7. 14. Inferring properties of dark energy from the large scale structure of the universe
    Anthony Scott Carr (KASI)
    29/07/2025, 15:30

    The structure of galaxies we see in the sky today was seeded in the very early universe. The evolution from initial tiny density perturbations to the cosmic web of voids, clusters and filaments of galaxies tells us about what the universe is made of. There are many ways to utilise this large scale structure to probe cosmology, but measuring the growth rate itself in the nearby universe is...

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  8. 15. Holographic Entanglement Entropy in the FLRW Universe
    Fumiya Sano (IBS CTPU-CGA)
    29/07/2025, 15:55

    We compute a holographic entanglement entropy via Ryu-Takayanagi prescription in the three-dimensional Friedmann-Lemaître-Robertson-Walker universe. We consider two types of holographic scenarios analogous to the static patch holography and the half de Sitter holography, in which the holographic boundary is timelike and placed in the bulk. We find in general that the strong subadditivity can...

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  9. 16. A photon cloud induced from an axion cloud
    Zi-Yu Tang (IBS CTPU-CGA)
    29/07/2025, 16:50
    100
  10. 17. Signatures of Primordial Gravitational Waves on the Large-Scale Structure of the Universe.
    Pritha Bari (IBS CTPU-CGA)
    29/07/2025, 17:15
    100

    Primordial gravitational waves (GWs), beyond their direct detection prospects, can induce second-order scalar perturbations. These tensor-induced scalar modes evolve similarly to standard matter perturbations and leave distinct imprints on the large-scale structure (LSS). In this talk, I will present a detailed study of these effects, including analytical results for the evolution of induced...

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  11. 18. Superradiant Bosons Driving Supermassive Black Hole Mergers
    Huiyu Zhu (IBS CTPU-CGA)
    29/07/2025, 17:40
    100

    Ultralight bosons, predicted in scenarios beyond the Standard Model and viable dark matter (DM)
    Candidates can form superradiant clouds around spinning black holes, influencing their dynamics.
    Using century-long monitored OJ287 supermassive black hole binary, we set the first DM–DM-independent,
    dynamical constraints on their masses μ = (8.5−22)×10−22 eV. These dynamical constraints,...

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  12. 19. Ultra-Light Dark Matter and its Dynamical Friction
    Hyeonmo Koo (U of Seoul)
    29/07/2025, 18:05
    100
  13. 1. Quantum physics seen through a gravitational lens
    Prof. Keun-Young Kim (GIST)
    30/07/2025, 10:00
  14. 20. String theory and black hole microstructure: Towards resolving horizons and singularities
    Shaun D. Hampton (KIAS)
    30/07/2025, 10:35
  15. 6. Mapping the Universe of Dark Matter: Tensions in the Standard Cosmological Model
    Prof. Ho Seong Hwang (SNU)
    30/07/2025, 11:30
  16. 21. Peak Sphericity of non-Gaussian random fields
    Michiru Uwabo-Niibo
    30/07/2025, 12:05
  17. 7. Scattering Amplitudes for Gravitational Wave
    Prof. Sangmin Lee (SNU)
    31/07/2025, 10:00
  18. 22. Gravitational Binary Dynamics in Post-Minkowskian Expansion and Poincaré Symmetry
    Hojin Lee (SNU)
    31/07/2025, 10:35
  19. 8. Cosmological stimulated emission
    Prof. Atsuhisa Ota (Chongqing U)
    31/07/2025, 11:30

    We study stimulated emission and absorption of gravitons in a squeezed vacuum
    state immersed in a thermal radiation bath. Employing one-loop
    interaction-picture perturbation theory, we track the time evolution of the
    graviton number operator and its expectation value in the squeezed vacuum,
    which characterizes the inflationary graviton state. In a Minkowski background
    with a thermal bath...

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  20. 23. Cosmological Implications of Unification: Topological Structures and Gravitational Waves
    Rinku Maji (IBS CTPU-CGA)
    31/07/2025, 12:05
  21. 2. Cosmic Mystery of Supermassive Black Holes: Perspectives in the Era of High-resolution Simulations
    Ji-Hoon Kim (SNU)
    31/07/2025, 14:30
  22. 24. Decay and lifetime of oscillons coupled to an external scalar field: Insights from instability band analysis
    Siyao Li (IBS CTPU-CGA)
    31/07/2025, 15:05

    Oscillons are long-lived, spherically symmetric solitons that can arise in real scalar field theories with potentials shallower than quadratic ones. They are considered to form via parametric resonance during the preheating stage after inflation and have extended lifetimes. However, the estimation of their lifespan becomes complicated when taking into account the interactions between the...

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  23. 25. Detecting the ISW effect using CMB-CIB cross-correlation
    Dongkok Kim (SNU)
    31/07/2025, 15:30
  24. 26. Cosmological Aspects of Stochastic Inflation
    Tomotaka Kuroda (IBS CTPU-CGA)
    31/07/2025, 15:55
  25. 27. Searching for Dark Neighbors: DL-based local DM density estimation in sub-kpc scale
    Yigon Kim (SNU)
    31/07/2025, 16:50
    100
  26. 28. Constraining the Dark Energy Equation of State with the Extended Alcock–Paczyński test
    Minseong Kwon (SNU)
    31/07/2025, 17:15
    100
  27. 29. Realizing Non-Singular Cosmologies within Horndeski Gravity
    Pavel Petrov (IBS CTPU-CGA)
    31/07/2025, 17:40
    100

    We present a minimal setup within the framework of Horndeski gravity that describes a nonpathological Genesis scenario. Our setup allows for a fully stable transition to the kination epoch, during which General Relativity (GR) is restored. This Genesis scenario circumvents the no-go theorem, albeit at the cost of encountering the risk of strong coupling in the past. Interestingly, our scenario...

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  28. 30. Primordial Black Hole: Future Perspective in Gravitational Wave Astronomy
    Qianhang Ding (IBS CTPU-CGA)
    31/07/2025, 18:05
    100
  29. 9. Classical Geometry from Matrix Model
    Hyun Seok Yang (GIST)
    01/08/2025, 10:00
  30. 31. Stability and cosmological dynamics of the Bumblebee field
    Nils Albin Nilsson (IBS CTPU-CGA)
    01/08/2025, 10:35
  31. 10. Foundations of Metric Affine theories of gravity and black holes
    Prof. Sebastian Bahamonde (IPMU/CTPU-CGA)
    01/08/2025, 11:30
  32. 32. The Tale of Cosmological Collider
    Yuhang Zhu (IBS CTPU-CGA)
    01/08/2025, 12:05