online JGRG workshop 2020 program

updated at 17:15 26th Nov.

• Page1: Time Table
• Page2: 1st Day (23th) -1
• Page3: 1st Day (23th) -2
• Page4: 2nd Day (24th)
• Page5: 3rd Day (25th) -1
• Page6: 3rd Day (25th) -2
• Page7: 4th Day (26th)
• Page8: 5th Day (27th)

Times are written in JST(Japan Standard Time, UTC+9)

“*” denotes a candidate for the online JGRG presentation award

online JGRG 2020                                                                                                                        Page 1

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23th Nov. (1)

10:00 - 10:30  Opening Remarks

10:30 - 11:30  Morning Session: 4 slots (23M1 - 23M4)  Chair: Hayato Motohashi

10:30 - 10:45  Dhong Yeon Cheong*(Yonsei University)

23M1:  Primordial Black Holes as Dark Matter in Higgs-R^2 Inflation

10:45 - 11:00  Kaz Kohri (KEK)

23M2:  Primordial black holes and stochastic gravitational wave background reported by NANOGrav 12.5yr

11:00 - 11:15  Shi Pi* (Institute of Theoretical Physics, Chinese Academy of Sciences)

23M3:  NANOGrav Hints on Planet-Mass Primordial Black Holes

11:15 - 11:30  Koki Tokeshi* (RESCEU, the University of Tokyo)

23M4:  Primordial black holes, improved mass function, and its window function dependence

11:30 -   Morning Session: Poster 1min talks (23P01 - 23P10)  Chair: Hayato Motohashi

23P01:  Kota Ogasawara*(Kyoto University)        

Complete classification of light escapes in the Kerr black hole spacetime

23P02:  Kangjae Lee*(Nagoya University)

Loosely trapped surface and dynamically transversely trapping surface in Einstein-Maxwell system

23P03:  Tsuyoshi Houri (National Institute of Technology, Maizuru College)

Hidden symmetry and the separability of the Maxwell equation on the Wahlquist spacetime

23P04:  Hirotaka Yoshino*(Osaka City University)

Dynamically transversely trapping surfaces in a Kerr spacetime

23P05:  Syed Umair Husain Naqvi*(Jagiellonian University)

Freely-falling bodies in standing wave spacetime.

23P06: Chulmoon Yoo (Nagoya Univ.)

Abundance of Primordial Black Holes in Peak Theory for an Arbitrary Power Spectrum

23P07:  Keita Takizawa*(Hirosaki University)        

Gravitational lens without asymptotic flatness and finite-distance effects on observables

23P08:  Hideyoshi Arakida        (Nihon University)

New concept and definition of the total deflection angle of a light ray in curved spacetime

23P09:  Yuki Sugiyama*(Hiroshima University)

The Unruh effect from GWs in Rindler and Kasner spacetime

23P10:  Kouji Nakamura*(National Astronomical Observatory of Japan)

Noise Estimation of Balanced Homodyne Detection For Gravitational-Wave Detectors

Intensive poster presentation hours for 23P01 - 23P10

23rd 12:00 - 13:00, 15:30 - 16:00

Priority Tables for Poster Presentations (through the workshop period)

1st floor: 23P01, 23P02                         25P01, 25P02, 25P03

2nd floor: 23P03, 23P04, 23P05           25P04, 25P05

3rd floor: 23P06, 23P07                        25P06, 25P07, 25P08

4th floor: 23P08, 23P09, 23P10           25P09, 25P10

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23th Nov. (2)

14:00 - 15:30  Afternoon Session: 6 slots (23A1 - 23A6) Chair: Kota Ogasawara

14:00 - 14:15  Kimihiro Nomura*(Kobe University)

23A1:  Stability of magnetic black holes in general nonlinear electrodynamics

14:15 - 14:30  Takuya Katagiri*(Rikkyo University)

23A2:  Conserved quantities on the horizon instability of extremal black holes from asymptotic symmetries

14:30 - 14:45  Hiroki Asami*(Nagoya University)

23A3:  Thermo-dynamical stability of Einstein Vlasov system

14:45 - 15:00  Jun Tsujimura*(Nagoya University)

23A4:  Entanglement Renyi entropy and cosmic string

15:00 - 15:15  Takaaki Ishii*(Kyoto University)

23A5:  Resonating AdS soliton

15:15 - 15:30  Masato Nozawa*(YITP, Kyoto University)

23A6:  Static wormholes in AdS

16:30 - 17:45  Evening Session: 5 slots (23E1 - 23E5)  Chair: Asuka Ito

16:30 - 16:45  Atsushi Naruko*(The Center for Gravitational Physics, Yukawa Institute for Theoretical Physics, Kyoto University)

23E1:  Long-wavelength perturbations around homogeneous but anisotropic spacetime

16:45 - 17:00  Hiroyuki Kitamoto*(Frontier Research Institute for Interdisciplinary Sciences, Tohoku University)

23E2:  No-go theorem of anisotropic inflation via Schwinger mechanism

17:00 - 17:15  So Okano*(Tokyo Institute of Technology)

23E3:  Hydrodynamic approach to the Schwinger effect during anisotropic inflation

17:15 - 17:30  Ippei Obata*(Max-Planck-Institute for Astrophysics)

23E4:  Statistically-Anisotropic Tensor Bispectrum from Inflation

17:30 - 17:45  Takahiro Terada*(Center for Theoretical Physics of the Universe, Institute for Basic Science)

23E5:  Gravitational Wave Production right after Primordial Black Hole Evaporation

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24th Nov.

10:30 - 12:30  Morning Session: 6 slots (24M1 - 24M6) Chair: Katsuki Aoki

10:30 - 10:45  Hayato Motohashi (Kogakuin University)

24M1:  Weakly-coupled stealth solution in scordatura degenerate theory

10:45 - 11:00  Keisuke Nakashi*(Rikkyo University)

24M2:  Towards rotating non-circular black holes in string-inspired gravity

11:00 - 11:15  Kazufumi Takahashi*(Kobe University)

24M3:  General Relativity solutions with stealth scalar hair in higher-order scalar-tensor theories

11:15 - 11:30  Keitaro Tomikawa*(Rikkyo University)

24M4:  Hairy black hole perturbations in shift-symmetric higher-order scalar-tensor theories

11:30 - 11:45  Rampei Kimura*(WIAS, Waseda University)

24M5:  New graviton's mass and cosmologies

11:45 - 12:00  Taisuke Matsuda*(Yukawa Institute for Theoretical Physics)

24M6:  Covariant entropy bound beyond general relativity

14:00 - 15:30  Afternoon Session: 6 slots (24A1 - 24A6)  Chair: Yuichiro Tada

14:00 - 14:15  Katsuya Abe*(Nagoya University)

24A1:  Induced gravitational waves as a cosmological probe of the sound speed during the QCD phase transition

14:15 - 14:30  Sung Mook Lee*(Yonsei University)

24A2:  Spontaneous Leptogenesis in Higgs Inflation

14:30 - 14:45  Fumio Uchida*(RESCEU, The University of Tokyo)

24A3:  Constraints on baryogenesis from primordial magnetic fields

14:45 - 15:00  Shao-Jiang Wang*(KIAS)

24A4:  Higgs chameleon

15:00 - 15:15  Yusuke Mikura*(Nagoya University)

24A5:  Conformal inflation in the metric-affine geometry

15:15 - 15:30  Minxi He*(RESCEU, UTokyo)

24A6:  Tachyonic preheating in the mixed Higgs-R^2 model

16:30 - 17:45  Evening Session: 5 slots (24E1 - 24E5)  Chair: Rampei Kimura

16:30 - 16:45  Kaishu Saito*(Kobe university)

24E1:  O(d,d;Z) invariant Fierz-Pauli gravity

16:45 - 17:00  Zhi-Bang Yao*(Sun Yat-Sen University)

24E2:  Minimally modified gravity with an auxiliary constraint: a Hamiltonian construction

24E3:  CANCEL

17:00 - 17:15  Yusuke Manita*(Kyoto University)

24E4:  Shift-symmetric SO(N) multi-Galileon

17:15 - 17:30  Katsuki Aoki*(Yukawa Institute for Theoretical Physics, Kyoto University)

24E5:  Non-linearly ghost-free higher curvature gravity

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25th Nov. (1)

10:30 - 11:30  Morning Session: 4 slots (25M1 - 25M4) Chair: Takahiro Terada

10:30 - 10:45  Kenichi Saikawa*(Kanazawa University)

25M1:  SMASH prediction for primordial gravitational waves

10:45 - 11:00  Jishnu Suresh*(ICRR, University of Tokyo)

25M2:  PyStoch: Single pipeline for all the Stochastic Gravitational Wave Background searches

11:00 - 11:15  Takahiro S Yamamoto*(Kyoto University)

25M3:  All-Sky Search for Continuous Gravitational Waves with Excess Power Method and Convolutional Neural Network

11:15 - 11:30  Asuka Ito*(NCTS)

25M4:  Analytic formula for the dynamics around inflation end and implications on primordial gravitational waves

11:30 -     Morning Session: Poster 1min talks (25P01 - 25P10) Chair: Takahiro Terada

25P01:  Kazuharu Bamba (Faculty of Symbiotic Systems Science, Fukushima University)

Autonomous system analysis of Bianchi-I spacetimes in $f(R)$ gravity

25P02:  Shin’ichi Hirano*(Nagoya University)

UV sensitive one-loop power spectrum in DHOST theory

25P03:  Tact Ikeda*(Rikkyo Univ.)

Static stars with heat flux vector in Horndeski/DHOST theories

25P04:  Masato Minamitsuji*(CENTRA, U-Lisbon)

Spontaneous symmetry breaking in a higher spin sector inside relativistic stars

25P05:  Tomoya Tachinami*(Hirosaki University)

Gravitational-wave polarizations in generic higher-curvature gravity

25P06:  Norihiro Tanahashi*(Chuo University)

Toward invertible field transformations with higher derivatives

25P07:  Masahiko Taniguchi*(Hiroshima Univ)

The vierbein formalism in F(R) gravity with spinor

25P08:  Yuichiro Tada*(Nagoya University)

Manifestly covariant theory of stochastic inflation

25P09:  Shuichiro Yokoyama (KMI, Nagoya University)

Violation of slow-roll in non-minimal inflation

25P10:  Ken Matsuno*(Osaka City University)

Steady flow and electric field in a two-component plasma

Intensive poster presentation hours for 25P01 - 25P10

25rd 12:00 - 13:00, 15:30 - 16:00

Priority Tables for Poster Presentations (through the workshop period)

1st floor: 25P01, 25P02, 25P03                23P01, 23P02

2nd floor: 25P04, 25P05                           23P03, 23P04, 23P05

3rd floor: 25P06, 25P07, 25P08               23P06, 23P07

4th floor: 25P09, 25P10                            23P08, 23P09, 23P10

online JGRG 2020                                                                                                                       Page 6

25th Nov. (2)

14:00 - 15:30  Afternoon Session: 6 slots (25A1 - 25A6) Chair: Masato Nozawa

14:00 - 14:15  Akira Matsumura*(Kyushu University)

25A1:  Gravity-induced entanglement in optomechanical systems

14:15 - 14:30  Daisuke Miki*(Kyushu University)

25A2:  Entanglement and decoherence of massive particles due to gravity

14:30 - 14:45  Takahisa Igata*(KEK)

25A3:  Observability of the innermost stable circular orbit in a near-extremal Kerr black hole

14:45 - 15:00  Yasutaka Koga*(Rikkyo University)

25A4:  Photon surfaces as pure tension shells: uniqueness of thin shell wormholes

15:00 - 15:15  Takafumi Kokubu*(Hunan Normal Uniersity)

25A5:  High energy collision without fine tuning: Acceleration and multiple collisions of shells in a bound system

15:15 - 15:30  Kazumasa Okabayashi*(Osaka City University)

25A6:  Particle creation and its robustness from a horizonless compact  object

16:30 - 17:45  Evening Session: 5 slots (25E1 - 25E5) Chair: Takahisa Igata

16:30 - 16:45  Yun-Long Zhang*(YITP, Kyoto University)

25E1:  Gravitational Waves and Possible Fast Radio Bursts from Axion Clumps

16:45 - 17:00  Taishi Ikeda*(Physics Department, Sapienza University of Rome)

25E2:  Black hole binaries and light fields: gravitational molecules

17:00 - 17:15  Yasufumi Kojima(Hiroshima University)

25E3:  Null electromagnetic field in Kerr spacetime and its application

17:15 - 17:30  Luca Bouninfante*(Tokyo Institute of Technology)

25E4:  How does a compact object ringdown?

17:30 - 17:45  Masashi Kimura*(Rikkyo University)

25E5:  Parametrized black hole quasinormal ringdown

19:00 -            Online Banquet

online JGRG 2020                                                                                                                       Page 7

26th Nov.

10:30 - 12:30  Morning Session: 6 slots (26M1 - 26M6) Chair: Kazufumi Takahashi

10:30 - 10:45  Shintaro Nakamura*(Tokyo University of Science)

26M1:  Suppressed cosmic growth in coupled vector-tensor theories

26M2:  CANCEL

10:45 - 11:00  Mohammad Ali Gorji*(Yukawa Institute for Theoretical Physics)

26M3:  Stealth dark energy in scordatura DHOST theory

11:00 - 11:15  Ryo Namba*(Tsung-Dao Lee Institute, Shanghai Jiao Tong University)

26M4:  Partial UV completion of P(X) from a curved field space

11:15 - 11:30  Sravan Kumar*(Tokyo Institute of Technology)

26M5:  Non-local gravity and cosmological applications

11:30 - 11:45  Yuichi Miyashita*(Tokyo Institute of Technology)

26M6:  Generalized ghost-free propagators in nonlocal field theories

14:00 - 15:30  Afternoon Session: 6 slots (26A1 - 26A6) Chair: Ryo Namba

14:00 - 14:15  Shingo Akama*(Rikkyo University)

26A1:  Primordial non-Gaussianities from genesis models without strong coupling problem

14:15 - 14:30  Hiroaki Tahara*(Rikkyo University)

26A2:  Extremely blue GWs from a NEC-violating phase followed by slow-roll inflation

14:30 - 14:45  Tomohiro Fujita*(ICRR, Tokyo University)

26A3:  Gauge-stochastic formalism in the axion inflation

14:45 - 15:00  Takeshi Kobayashi*(KMI, Nagoya U)

26A4:  New Ideas in Axion Cosmology

15:00 - 15:15  Kai Murai*(ICRR, University of Tokyo)

26A5:  Probing early dark energy of axion-like particle via CMB polarization rotation

15:15 - 15:30  Naoya Kitajima*(Tohoku University)

26A6:  Primordial Black Holes from QCD Axion Bubbles

16:30 - 17:45  Evening Session: 5 slots (26E1 - 26E5) Chair: Keiju Murata

16:30 - 16:45  Soligon Diego*(Nagoya University)

26E1:  Positive Mass Theorem in Kaluza-Klein Picture

16:45 - 17:00  Ryotaku Suzuki*(University of Barcelona)

26E2:  Brane blobology in large D effective theory

17:00 - 17:15  Kunihito Uzawa*(Kwansei Gakuin university)

26E3:  Dilatonic black holes and the weak gravity conjecture

17:15 - 17:30  Daisuke Yoshida*(Kobe University)

26E4:  Classification of initial singularity

17:30 - 17:45  Naritaka Oshita*(Perimeter Institute for Theoretical Physics)

26E5:  Hawking-Moss transition catalyzed by a black hole seed

online JGRG 2020                                                                                                                       Page 8

27th Nov.

10:30 - 12:30  Morning Session: 6 slots (27M1 - 27M6) Chair: Teruaki Suyama

10:30 - 10:45  Jun’ya Kume*(RESCEU, UTokyo)

27M1:  Offline noise subtraction in KAGRA using independent component analysis

10:45 - 11:00  Takuya Tsutsui*(University of Tokyo)

27M2:  An improvement of early warning with 3G detectors by precession effect

11:00 - 11:15  Shun Arai*(Center for Gravitational Physics, YITP)

27M3:  Probes of cosmology and gravity theories by Standard Sirens with restriction of inhomogeneous matter distribution

           in the universe

11:15 - 11:30  Hidetoshi Omiya*(Kyoto U)

27M4:  Renormalization Group analysis of the superradiant growth of the self-interacting axion cloud

11:30 - 11:45  Kei Yamada*(Kyoto University)

27M5:  Testing GR with GW190814: massive field dipole radiation

11:45 - 12:00  Rio Saitou*(Daido University)

27M6:  Light deflection in Observation: Angle differences between two null geodesics on the de Sitter spacetime

           with multi-lensing objects

14:00 - 15:30  Afternoon Session: 6 slots (27A1 - 27A6) Chair: Hirotaka Yoshino

14:00 - 14:15  Hiromi Saida (Daido Univ.)

27A1:  On the Parametrized post-Newtonian Test at the Galactic Center Massive Black Hole

14:15 - 14:30  Tomohiro Harada (Rikkyo University)

27A2:  Stability of charged AdS black holes in the Robin boundary

14:30 - 14:45  Keiju Murata (Nihon University)

27A3:  Superradiant instability of black resonators and geons

14:45 - 15:00  Sinya Aoki (Yukawa Institute for Theoretical Physics, Kyoto University)

27A4:  Conserved charges in gravity

15:00 - 15:15  Teruaki Suyama (Tokyo Institute of Technology)

27A5:  Search for the stochastic gravitational-wave background induced by primordial curvature perturbations

           in LIGO's second observing run

15:15 - 15:30  Yuki Watanabe (NIT, Gunma College)

27A6:  Primordial gravitational waves from axion-SU(2) gauge fields

15:30 -           Awarding Ceremony and Closing Remarks