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Cosmic Acceleration

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Lecture Hall (Kavli IPMU, Kashiwa, Japan)

Lecture Hall

Kavli IPMU, Kashiwa, Japan

Kashiwa, Japan
Description

Dates: February 17 - 19, 2020

Venue: Lecture Hall, Kavli IPMU, Kashiwa, Japan

Overview:

Because gravity is an attractive force, the expansion speed of the Universe should be decreasing. However, observational data accumulated over the years strongly support that the present Universe is in the phase of the accelerated expansion and there was also another phase of the accelerated expansion in the very early Universe. The physical echanism that makes the Universe undergo the ccelerated expansion is not known yet. Some “repulsive force” is necessary. The purpose of this innovative area is to clarify the origin of the accelerated expansion. In order to achieve this goal, it is necessary to investigate the interplay between the repulsive force causing the accelerated expansion and the attractive force sourced by dark matter which triggers the formation of the cosmic structures such as the galaxies and clusters of galaxies. In this innovative area, researchers from different fields join together and form nine sub-groups: inflation in the early Universe (A01), decelerated expansion by dark matter (A02), accelerated expansion by dark energy in the present Universe (A03), cosmic microwave background (B01), galaxy imaging (B02), galaxy spectroscopy (B03), direct measurement of the cosmic expansion (B04), ultimate data analysis (D01), and ultimate theory of the Universe (C01). Not only collaborations within each individual sub-group but also collaborations among the different sub-groups are essential to obtain scientific achievements we desire.

This symposium consists of reports of scientific results by representatives and members of each sub-group as well as researchers selected for public research.

 

Invited speakers:

Chihway Chang (KICP, U. Chicago)
Kyle Dawson (Utah) 
Konstantinos Dimopoulos (Lancaster)
Elisa Ferreira (MPA)
Nicoletta Krachmalnicoff (SISSA)
Tom Melia (Kavli IPMU: TBC)
Marius Millea (BCCP, UC Berkeley)
Alexander Westphal (DESY)


Code of Conduct:
It is the policy of the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU) that all members and visitors will conduct themselves in a professional manner that is welcoming and free from any form of discrimination, harassment, or retaliation. Members and visitors will avoid any inappropriate actions or statements based on individual characteristics such as age, race, ethnicity, gender, sexual orientation, marital status, nationality, or political affiliation. Disruptive or harassing behavior of any kind will not be tolerated. Harassment includes but is not limited to inappropriate or intimidating behavior and language, unwelcome jokes or comments, unwanted touching or attention, offensive images, photography without permission, and stalking. Members and visitors will treat each other with respect to create a collegial, inclusive, and professional environment at the Kavli IPMU.

 

Organizers:

Masashi Hazumi (KEK/Kavli IPMU)
Eiichiro Komatsu (MPA/Kavli IPMU)
Ryu Makiya (Kavli IPMU)
Satoshi Miyazaki (NAOJ)
Hitoshi Murayama (Kavli IPMU/Berkeley)
Hirosi Ooguri (Caltech/Kavli IPMU)
Naoshi Sugiyama (Nagoya/Kavli IPMU)
Tomomi Sunayama (Kavli IPMU)
Masahiro Takada (Kavli IPMU)
Fuminobu Takahashi (Tohoku U.)
Tomonori Usuda (NAOJ)

Address:
Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU),
the University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa City, Chiba 277-8583, Japan

 

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  • Monday 17 February
    • 08:30
      Registration & coffee & snacks Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
    • Fe 17 Morning session I Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
      Convener: Masahiro Takada (Kavli IPMU)
      • 1
        logistics information
      • 2
        Accelerating Universe Overview
        Speaker: Hitoshi Murayama (Kavli IPMU/Berkeley)
        HitoshiMurayama_Overview.pdf
      • 3
        (Invited talk) From Quantum Gravity to Low Energy Physics
        Speaker: Yasunori Nomura (Berkeley/Kavli IPMU)
        YasunoriNomura.pdf
        YasunoriNomura.pdf
      • 4
        Cross-correlation of the astrophysical gravitational-wave background with galaxy clustering
        Speaker: Valeri Vardanyan (Kavli IPMU)
        ValeriVardanyan.pdf
    • 10:20
      Coffee break Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
    • Feb 17 Morning session II
      Convener: Masahiro Takada
      • 5
        A01
        Speaker: Misao Sasaki (Kavli IPMU)
        A01_MisaoSasaki.pdf
      • 6
        Formations and clusterings of primordial black hole dark matter formed in the matter dominated Universe
        Speaker: Kaz Kohri (KEK)
        KazKohri.pdf
      • 7
        primordial black holes with primordial non-Gaussianity
        Speaker: Yokoyama Shuichiro (KMI, Nagoya University)
        ShuichiroYokoyama.pdf
    • 11:55
      Lunch break & Poster session Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
    • Feb 17 Afternoon session I Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
      Convener: Fuminobu Takahashi (Tohoku U.)
      • 8
        (Invited talk) The light dark matter search— what’s going on at an MeV?
        Speaker: Tom Melia (Kavli IPMU)
        TomMelia.pdf
      • 9
        Searching for particle dark matter by cross-correlating gamma rays and large-scale structure
        Speaker: Shin'ichiro Ando (University of Amsterdam)
        ShinichiroAndo.pdf
      • 10
        Constraint on the nature of dark matter by high-resolution cosmological simulations and next generation spectroscopy observations
        Speaker: Tomoaki Ishiyama (Chiba University)
        TomoakiIshiyama.pdf
      • 11
        The study on quantum gravity theory through polarization measurements of high energy gamma rays from gamma ray bursts
        Speaker: Shuichi Gunji (Yamagata University)
        ShuichiGunji.pdf
    • 15:00
      IPMU Tea Time & Poster session 3rd Floor, Fujiwara Hall

      3rd Floor, Fujiwara Hall
    • Feb 17 Afternoon session II Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
      Convener: Eiichiro Komatsu (MPA/Kavli IPMU)
      • 12
        (Invited talk) Goals and challenges for next generation of CMB experiments
        Speaker: Nicoletta Krachmalnicoff (SISSA)
        NicolettaKrachmalnicoff.pdf
      • 13
        B01
        Speaker: Masashi Hazumi (KEK/Kavli IPMU)
        B01_MasashiHazumi.pdf
      • 14
        Simons Array
        Speaker: Hasegawa Masaya (KEK)
        MasayaHasegawav.pdf
      • 15
        Optical designs and performance of LiteBIRD
        Speaker: Hiroaki Imada (Université Paris-Saclay, CNRS/IN2P3, IJCLab)
        HiroakiImada.pdf
      • 16
        Development of LiteBIRD polarization modulator
        Speaker: Yuki Sakurai (Kavli IPMU)
        YukiSakurai.pdf
      • 17
        Cryogenics architecture for LiteBIRD satellite
        Speaker: Takashi Hasebe (JAXA/ISAS)
        TakashiHasebe.pdf
      • 18
        Simultaneous determination of the cosmic birefringence and miscalibrated polarisation angles from LiteBIRD
        Speaker: Yuto Minami (KEK)
        YutoMinami.pdf
    • Poster machine-gun talks Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
      Poster presentation.pdf
  • Tuesday 18 February
    • 08:30
      Coffee & snacks Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
    • Feb 18 Morning session I Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
      Convener: Masashi Hazumi (KEK/Kavli IPMU)
      • 19
        A02
        Speaker: Fuminobu Takahashi (Tohoku University)
        A02_FumiTakahashi.pdf
      • 20
        Supersymmetric model for dark matter and muon g-2
        Speaker: Norimi Yokozaki (Tohoku University)
        NorimiYokozaki.pdf
      • 21
        New Insights in to the Stellar Components and Dark Halo in the Milky Way
        Speaker: Chiba Masashi (Tohoku University)
        MasashiChiba.pdf
      • 22
        Diversity of the central dark matter densities in the Galactic dwarf spheroidals
        Speaker: Kohei Hayashi (ICRR, U. Tokyo)
        KoheiHayashi.pdf
    • 10:30
      Coffee break Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
    • Feb 18 Morning session II Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
      Convener: Masashi Hazumi
      • 23
        (Invited talk) UV-IR Bottlenecks for Inflation and the Higgs
        Speaker: Alexander Westphal (DESY)
        AlexWestphal.pdf
      • 24
        (Invited talk) Ultra-light Dark Matter
        Speaker: Elisa Ferreira (MPA)
        ElisaFerreira.pdf
      • 25
        Revisiting slow-roll dynamics and the tensor tilt in general single-field inflation
        Speaker: Tsutomu Kobayashi (Rikkyo University)
        TsutomuKobayashi.pdf
    • 12:05
      Group Photo Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
    • 12:10
      Lunch break & Poster session
    • Feb 18 Afternoon session I Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
      Convener: Satoshi Miyazaki
      • 26
        (Invited talk) eBOSS: Cosmology with Baryon Acoustic Oscillations and Redshift Space Distortions
        Speaker: Kyle Dawson (The University of Utah)
        KyleDawson.pdf
      • 27
        B03
        Speaker: Masahiro Takada (Kavli IPMU)
        B03_update_MasahiroTakada.pdf
      • 28
        The impact of projection effects on cluster observables
        Speaker: Tomomi Sunayama (Kavli IPMU)
        TomomiSunayama.key
      • 29
        Cosmological constraints from galaxy-galaxy lensing and clustering with the Subaru HSC and SDSS BOSS data
        Speaker: Hironao Miyatake (Nagoya University)
        HironaoMiyatake.pdf
    • 15:10
      IPMU Tea Time & Poster session 3rd Floor, Fujiwara Hall

      3rd Floor, Fujiwara Hall
    • Feb 18 Afternoon session II Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
      Convener: Misao Sasaki
      • 30
        (Invited talk) The Hubble Hunter's Guide
        Speaker: Marius Mellea (Berkeley)
        MariusMillea.pdf
      • 31
        A03
        Speaker: Shinji Tsujikawa (Tokyo University of Science)
        A03_ShinjiTsujikawa.pdf
      • 32
        Hubble Tension: New Physics vs Systematics
        Speaker: Arman Shafieloo (KASI)
        ArmanShafieloo.pdf
      • 33
        Initial density field reconstructions from high redshift galaxy surveys
        Speaker: Metin Ata (Kavli IPMU)
        MetinAta.pdf
      • 34
        Computations of quantities characterizing PBHs formed from primordial perturbations
        Speaker: Teruaki Suyama (Tokyo Institute of Technology)
        TeruakiSuyama.pdf
    • 19:00
      Banquet @ The Meat Dutch; 19:00 - Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan

      30min from IPMU (by walk), 5min from Mitsui-Garden Hotel or Kashiwa-no-Ha Campus station

  • Wednesday 19 February
    • 08:30
      Coffee & snacks Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
    • Feb 19 Morning session I Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
      Convener: Tomonori Usuda
      • 35
        B02
        Speaker: Satoshi Miyazaki (NAOJ)
      • 36
        Development and testing of new CMOS
        Speaker: Yutaka Komiyama (NAOJ)
        YutakaKomiyama.pdf
      • 37
        Splashback radius of clusters in the HSC survey
        Speaker: Masamune Oguri (U. Tokyo/Kavli IPMU)
        MasamuneOguri.pdf
      • 38
        (invited talk) Cosmology in the Era of Galaxy Surveys -- from DES to LSST

        We are at an exciting time of cosmology with a number of Stage III galaxy surveys finishing up and Stage IV experiments on the horizon. In this talk I will summarize some of the first year DES cosmology results, focusing on the 3x2pt and 5x2pt analysis which probes the large-scale structure through the galaxy and weak lensing fields. I will point out some of the challenges going forward with DES and LSST, as well as some new exciting directions that the new data allows us to explore.

        Speaker: Chihway Chang (University of Chicago)
        ChihwayChang.pdf
    • 10:40
      Coffee break Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
    • Feb 19 Morning session II Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
      Convener: Tomonori Usuda
      • 39
        Laboratory searches for pseudo Nambu-Goldstone bosons with stimulated photon-photon colliders
        Speaker: Kensuke Homma (Hiroshima U.)
        KensukeHomma.pdf
      • 40
        Measurement of expansion of the Universe using high-z type Ia supernovae
        Speaker: Naoki Yasuda (Kavli IPMU)
        NaokiYasuda.pdf
      • 41
        Structure of subhalos around Milky Way-mass galaxies in CDM and SIDM universe
        Speaker: Takashi Okamoto (Hokkaido Uniersity)
        TakashiOkamoto.pdf
    • 12:00
      Lunch break & Poster session Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
    • Feb 19 Afternoon session I Lecture Hall

      Lecture Hall

      Kavli IPMU, Kashiwa, Japan

      Kashiwa, Japan
      Convener: Masahiro Takada
      • 42
        B04
        Speaker: Tomonori Usuda (NAOJ)
        B04_TomonoriUsuda.pptx
      • 43
        Development of laser comb to calibrate high dispersion spectrograph for radial velocity measurement
        Speaker: Hajime Inaba (National Institute of Advanced Industrial Science and Technology (AIST))
        HajimeInaba.pdf
      • 44
        First Stability Results of our Second Gen. Astro-Comb
        Speaker: Malte Schramm (NAOJ)
      • 45
        D01
        Speaker: Eiichiro Komatsu (MPA/Kavli IPMU)
        D01_EiichiroKomatsu.pdf
      • 46
        HSC-PFS cross-correlation simulated by the “lognormal_lens” code
        Speaker: Issha Kayo (Tokyo University of Technology)
        IsshaKayo.pdf
      • 47
        Thermal history of the universe probed by a joint analysis of the thermal Sunyaev–Zeldovich effect and galaxy surveys
        Speaker: Ryu Makiya (Kavli IPMU)
        RyuMakiya.pdf
      • 48
        Closing remark
        Speaker: Hitoshi Murayama (Kavli IPMU/Berkeley)
        HitoshiMurayama_Concluding Remark 2020.pdf
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