With the detection of gravitational waves from the merger of binary black holes by LIGO, we officially entered the era of gravitational wave cosmology. During the early universe, many interesting physical processes could generate gravitational waves, which were usually associated with new physics beyond the standard model. This opens up a new observational window for humanity to further uncover the origins of the universe and its matter content. These gravitational waves are generated at different epochs and propagate through the cosmic history until the present, which are redshifted to different frequency bands. In the recent future, various gravitational wave detection projects are planned, including CMB-S4, LiteBIRD, BICEP3/Keck Array, AliCPT utilizing the B-mode polarization of the cosmic microwave background radiation; NANOGrav, EPTA, PPTA, CPTA using pulsar timing arrays; LISA, Taiji, TianQin utilizing space-based gravitational wave interferometers; and ET, BBO for ground-based gravitational wave interferometers.
Recently, the NANOGrav, EPTA, and CPTA jointly announced strong evidence for the existence of a nanohertz stochastic gravitational wave background. This has reignited our interest in gravitational waves produced in the early universe.
In order to further advance research in relevant fields, we hold this international workshop, inviting active experts who are interested in related topics to participate. The aim is to promote further combination of theory and observation in the gravitational wave cosmology, and to foster collaboration among international scholars.
Invited speakers include：
| Yi-Fu Cai (University of Science and Technology of China) |
| Yi-Zhong Fan (Purple Mountain Observatory, CAS) |
| Jinn-Ouk Gong (Ewha Women's University) |
| Yungui Gong (Huazhong University of Science and Technology) |
| Wenbiao Han (Shanghai Observatory, CAS) |
| Qing-Guo Huang (ITP, CAS) |
| Kohei Inayoshi (KIAA, Peking University) |
| Jiliang Jing (Hunan Normal Univerisity) |
| Kazunori Kohri (NAOJ/KEK) |
| Kejia Lee (KIAA, Peking University) |
| Yuxiao Liu (Lanzhou University) |
| Jian-wei Mei (TianQin Center, Sun Yat Sen University) |
| Atsuhisa Ota (Chongqing University) |
| Yun-Song Piao (University of CAS) |
| Misao Sasaki (Kavli IPMU, the University of Tokyo) |
| Yi Wang (Hong Kong University of Science and Technology) |
| Yue-Liang Wu (University of CAS/ITP,CAS) |
| Xin Zhang (Northeastern University) |
| Wen Zhao (University of Science and Technology of China) |
Schedule: Register on Oct 13th (Fri). Workshop on Oct 14th (Sat) and 15th (Sun). Leave on Oct 16th (Mon).
Please register. If you prefer to stay in Xijiao Hotel we preserved, please click it. As the number of rooms is limited, it's first come first served. If you need any help in booking a hotel by yourself, please contact us.
This workshop is sponsored by ITP, CAS, by the Center for High Energy Physics, Peking University, and by the National Key Research and Development Program of China Grant No. 2021YFC2203004.
Organizers:
Cristian Joana, Li Li, Shi Pi, Shao-Jiang Wang, Yong Zhou
Contact:
Lü Lü (email: lvlv@pku.edu.cn), Qingrong Ni (email: niqr@itp.ac.cn), Shi Pi (email: shi.pi@itp.ac.cn, phone: +86-13810683773), Jianing Wang (email: wangjianing@itp.ac.cn)
随着LIGO观测到双黑洞合并的引力波，人类正式进入引力波宇宙学时代。在早期宇宙中，很多有趣的物理过程都能产生引力波。它们通常都和超出标准模型的新物理相联系，是人类进一步揭开宇宙起源和物质起源的一个新的观测窗口。这些引力波诞生于宇宙的不同时期，可能出现在许多可探测频段上。未来十几年内将有不同的引力波探测计划进行探测。其中包括间接利用微波背景辐射B模偏振的CMB-S4、LiteBIRD、BICEP3/Keck Array、AliCPT；利用脉冲星测时阵列的NANOGrav, EPTA, PPTA, CPTA；空间引力波干涉仪的LISA、太极、天琴；地面引力波探测器的ET、BBO等。最近，NANOGrav, EPTA, CPTA等脉冲星测试阵列观测组同时宣布观测到纳赫兹随机引力波背景存在的强烈证据。这重新燃起了我们对早期宇宙中产生的引力波的兴趣。
为了进一步推进相关领域的研究，我们特地组织召开此次国际学术研讨会，邀请对相关问题有兴趣的专家参会，以增进理论与观测之间的联系，并促进国内外学者之间的合作与交流。
邀请报告人包括：
| 蔡一夫（中国科技大学） | 范一中（中国科学院紫金山天文台） |
| 孔镇郁（梨花女子大学） | 龚云贵（华中科技大学） |
| 韩文标（中国科学院上海天文台） | 黄庆国（中国科学院理论物理研究所） |
| 稻吉恒平（北京大学Kavli天文与天体物理研究所） | 荆继良（湖南师范大学） |
| 郡和范（日本国立天文台/高能加速器研究机构） | 李柯伽（北京大学Kavli天文与天体物理研究所） |
| 刘玉孝（兰州大学） | 梅健伟（中山大学天琴中心） |
| 太田敦久（重庆大学） | 朴云松（中国科学院大学） |
| 佐佐木节（东京大学Kavli数物连携宇宙研究机构） | 王一（香港科技大学） |
| 吴岳良（中国科学院大学/理论物理研究所） | 张鑫（东北大学） |
| 赵文（中国科技大学） |
本次会议不收注册费，食宿自理。10月13日（周五）报到，10月14日（周六）及10月15日（周日）两天会议，10月16日（周一）上午自由讨论、下午离会。
为了方便外地来的老师参会，我们在北京西郊宾馆预订了一些房间。如果您愿意入住，请在注册时勾选。公开注册的截止日期是2023年9月20日。我们将按照注册的时间顺序安排住宿。因为数量有限，有可能无法安排，还请您谅解。
本次会议由中国科学院理论物理研究所及北京大学高能物理研究中心联合举办，并受到科技部国家重点研发计划“引力波探测”专项项目“宇宙弦等新颖引力波源与随机引力波背景的特征和信号识别研究”(项目号2021YFC2203004)的资助。
组织者：
Cristian Joana、李理、皮石、王少江、周勇
联系人：
吕律 (lvlv@pku.edu.cn)、倪清容 (邮箱：niqr@itp.ac.cn)、皮石 (邮箱：shi.pi@itp.ac.cn，电话：13810683773，微信：stonepi)、王嘉宁 (邮箱：wangjianing@itp.ac.cn)
