## Program

## Poster sessions

Instructions for the poster presenters

Poster session on Feb. 20 and short poster presentation on Feb. 19

Poster session on Feb. 22 and short poster presentation on Feb. 21

* The following lists include not only those who have chosen "poster (YKIS only)" but also those who have chosen "both" in the registration form. If you belong to the latter group, please carefully check both of the talk and the poster programs.

### Poster session on Feb. 20 and short poster presentation on Feb. 19

(ODD poster numbers)

Y206 | ||
---|---|---|

1. | Abolhasani Aliakbar | |

3. | Saikat Chakraborty | Bouncing Cosmology in f(R) Theories of Gravity |

5. | Debika Chowdhury | Primordial magnetic fields in bouncing universes |

7. | Aliasghar Parvizi | Quantum theory of electromagnetic field in a cosmological quantum space-time |

9. | Tomohiro Fujita | Primordial Gravitational Waves from Gauge Fields |

11. | Fuminori Hasegawa | Primordial black holes and dark matter from Affleck-Dine mechanism |

13. | Takashi Hiramatsu | Reconstruction of primordial tensor power spectrum from B-mode observations |

15. | Taishi Ikeda | Maximum Power Hypothesis |

17. | Asuka Ito | Primordial gravitational waves and early universes |

19. | Canceled | |

21. | Ryo Kato | Constraint on the axion dark matter using pulsar timing arrays |

23. | Masashi Kimura | mass ladder operators |

25. | Tomotaka Kitamura | Tree-level Unitarity of Horava-Lifshitz gravity |

27. | Kwun Hang Lai | Constraining Black Hole Horizon Effect in LIGO |

29. | Canceled | |

31. | Andrew Miller | A method to detect long duration transients from isolated neutron stars using machine learning and the FrequencyHough |

33. | Swagat Saurav Mishra | New scalar field models of Ultra-light Dark Matter and tracker Dark Energy based on the ƒ¿-attractors |

35. | Taisaku Mori | BRS structure of simple model for cosmological constant problem |

Y306 | ||
---|---|---|

37. | Hiroyuki Nakano | Multi-band gravitational-wave astronomy for binary's spin parameters |

39. | Eugenio Noda | BAO Extractor: A novel robust method to infer Baryon Acoustic Oscillations scales from galaxy survey data |

41. | Yoshiaki Ohkuwa | Virtual Black Holes in a Third Quantized Formalism |

43. | Ken Osato | Blind test of regularized perturbation theory with N-body simulations |

45. | Canceled | |

47. | Canceled | |

49. | Samuel Passaglia | Bispectrum in the Unified EFT of Inflation beyond Slow-Roll |

51. | Alberto Saa | Phase space analysis of singularities in F(R) cosmology |

53. | Ryo Saito | The Vainshtein mechanism in general scalar-tensor theories |

55. | Mohit Kumar Sharma | Some aspects of Cosmological perturbations in interacting dark energy models |

57. | Canceled | |

59. | Junsei Tokuda | Theoretical Consistency of Stochastic Approach |

61. | Ryota Tozuka | Multi T-Model Inflation |

63. | Kei Yamada | Singular behavior of BH perturbations and gauge dof in the near-horizon limit |

65. | Masashi Yamazaki | Modified Gravity and Compact Objects |

67. | Mai Yashiki | Observational test of the unified model in f(R) gravity |

69. | Chulmoon Yoo | PBH abundance from the random Gaussian curvature perturbation and a local density threshold |

71. | Yun-Long Zhang | Holographic Screens in Flat Spacetime |

### Poster session on Feb. 22 and short poster presentation on Feb. 21

(EVEN poster numbers)

Y206 | ||
---|---|---|

2. | Katsuki Aoki | Massive graviton geons: Self-gravitating massive gravitational waves |

4. | Baoyi Chen | Metric perturbations in near-horizon extremal Kerr spacetime |

6. | Ka - Wai Chung | Constrain Lorentz Violations of Gravitational Waves with Lensing and Super Massive Black Hole Ringdown |

8. | Torben Christian Frost | |

10. | Otto Akseli Hannuksela | Discovering binary environments with gravitational waves |

12. | Canceled | |

14. | Tsuyoshi Houri | Hidden conformal symmetries of spacetime and higher-order ladder operators for the Klein-Gordon equation |

16. | Keisuke Inomata | Double Inflation as an origin of PBHs for all dark matter and LIGO |

18. | Li Kaye Jiale | Dynamics of fast spinning neutron stars in a hyperbolic orbit near a massive black hole |

20. | Felix-Louis Julie | |

22. | Fumiko Kawazoe | Structured Doctoral Programmes for the next generation of gravitational scientists in Hannover |

24. | Shunichiro Kinoshita | The essence of the Blandford-Znajek process |

26. | Nakamura Kouji | Double balanced homodyne detection |

28. | Jacob Michael Leedom | ANOMALY CANCELLATION IN EFFECTIVE SUPERGRAVITY THEORIES FROM THE HETEROTIC STRING: TWO SIMPLE EXAMPLES |

30. | Fakhereh Md esmaeili | |

32. | Masato Minamitsuji | Compact objects in the generalized Proca theory |

34. | Canceled | |

36. | Hayato Motohashi | Constructing ghost-free degenerate theories with higher derivatives |

Y306 | ||
---|---|---|

38. | Atsushi Naruko | Long-wavelength perturbations around homogeneous but anisotropic spacetime |

40. | Ippei Obata | Primordial GWs sourced by gauge field |

42. | Michele Oliosi | Minimal theory of quasidilaton massive gravity |

44. | Naritaka Oshita | Probing microscopic structure of spacetime with ringdown gravitational waves |

46. | Georgios Papadomanolakis | The stability conditions of modified gravity models and their applications |

48. | Canceled | |

50. | Arun Kumar Puthiavan | Galaxy Kinematics: Dark Matter Distribution |

52. | Shohei Saga | New constraints on small-scale primordial magnetic fields from Magnetic Reheating |

54. | Seiga Sato | Hybrid Higgs Inflation |

56. | Kazuyuki Sugimura | Accretion onto SMBH seeds: the impact of radiation anisotropy and gas angular momentum |

58. | Kazufumi Takahashi | Extended-mimetic gravity: Hamiltonian analysis and gradient instabilities |

60. | Kenji Tomita | Super-horizon second-order perturbations for cosmological random fluctuations and the Hubble-constant problem |

62. | Kunihito Uzawa | Ekpyrotic scenario in string theory |

64. | Daisuke Yamauchi | Constraining modified theory of gravity with galaxy bispectrum |

66. | Ziang Yan | |

68. | Zhang Yingli | Black hole perturbations in vector-tensor theories: The odd-mode analysis |

70. | Daiske Yoshida | Exploring the string axiverse and parity violation in gravity with gravitational waves |

72. | Canceled |