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  • 學術報告

    學術活動

    學術報告
    05/17 2022 Seminar
    • Title題目 Cosmic coincidences of primordial-black-hole dark matter
    • Speaker報告人 Yi-Peng Wu (Sorbonne University, Paris)
    • Date日期 2022年05月17日 19:30
    • Venue地點 Join Zoom Meeting https://zoom.us/j/81598560859?pwd=enNuemRnbWt3NGhOdXpRWG55eGtGZz09 Meeting ID: 815 9856 0859 Passcode: 623939
    • Abstract摘要

          If primordial black holes (PBHs) contribute more than 10 percent of the dark matter (DM) density, their energy density today is of the same order as that of the baryons. Such a cosmic coincidence might hint at a mutual origin for the formation scenario of PBHs and the baryon asymmetry of the Universe. In this talk, I will introduce how baryogenesis can be triggered by the so-called ultra-slow-roll inflation that produces large curvature perturbations for PBH formation in single-field inflationary models. Within the inferred mass range for PBHs as important DM components, the "cosmic coincidence" requirement restricts the scaling power of the frequencies in the stochastic gravitational wave background induced by ultra-slow-roll inflation, which can be tested by future experiments such as LISA, Einstein Telescope or DECIGO. 

          

          Reference

          Phys.Rev.Lett. 128 (2022) 3, 031102

          

          個人簡介:

        PhD National Tsing Hua University (Hsinchu) 2010-2014
        PD1 Academia Sinica (Taipei)                         2015-2016
        PD2 University of Tokyo (Tokyo)                     2016-2019
        PD3 Sorbonne University (Paris)                    2020-present

          

          Contact聯系人  王少江 

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