我主要从事早期宇宙学及其相关领域的研究工作，尤其是宇宙学微扰论、暴胀宇宙学、修改引力理论、背景引力波方面的研究。最近五年的研究聚焦于随机引力波背景、原初黑洞、非线性微扰论等课题。多个原创工作得到国内外同行的广泛关注和高度评价：率先研究了非高斯曲率扰动诱导的引力波，为未来的引力波探测的大科学装置建立了新的科学目标；发现了随机引力波背景的红外标度律，分析研究了诱导引力波功率谱的一般性质，对随机引力波背景的理论研究、信号搜寻、参数拟合具有重要的指导意义；深入研究了曲率扰动的非微扰行为，构建了解析可解的非微扰曲率扰动模型，为原初黑洞和非高斯性的研究开辟了新方向。近年来我在PRL,PRD,SCPMA,JCAP等国际学术期刊上发表论文30余篇。总被引用 2300 余次，h 因子为 24，其中被引用 100 次以上的论文 7 篇（截止到2024年3月，根据高能物理论文数据库 INSPIREHEP 统计）。受邀担任PRL, PRD, SCPMA, JCAP等国际一流 SCI 期刊的审稿人，多次在引力和宇宙学的重要国际会议上做特邀大会报告和邀请报告。相关工作得到了多个大型实验组如LISA、NANOGrav等关注和引用。

我每年招收一名硕士研究生。主要招生渠道是理论物理研究所的优秀本科生夏令营。欢迎报名。有志于加入我们团队的同学可以提前和我联系。

070201-理论物理
070401-天体物理

宇宙学
引力波
引力理论

2006-09--2013-01   北京大学物理学院物理系   理学博士
2001-09--2005-07   北京大学物理学院天文系   理学学士

   

2020-10~现在, 中国科学院理论物理研究所, 副研究员
2018-04~2020-10,东京大学数物连携宇宙研究机构(Kavli Institute of Mathematics and Physics of the Universe, the University of Tokyo), 博士后
2017-10~2018-03,京都大学基础物理研究所(Yukawa Institute for Theoretical Physics, Kyoto University), 博士后
2015-11~2017-09,中国科学院理论物理研究所, 博士后
2013-04~2015-10,亚太理论物理中心(Asian Pacific Center for Theoretical Physics)), 博士后

   

[1] 皮石, Sasaki, Misao. Logarithmic Duality of the Curvature Perturbation. Physical Review Letters[J]. 2023, [2] Pi, Shi, Wang, Jianing. Primordial Black Hole Formation in Starobinsky's Linear Potential Model. Journal of Cosmology and Astroparticle Physics[J]. 2022, 2023(6): 018-, http://arxiv.org/abs/2209.14183.
[3] Pi, Shi, Sasaki, Misao. Primordial Black Hole Formation in Non-Minimal Curvaton Scenario. 2022, [4] Pi, Shi. Detecting warm dark matter by the stochastic gravitational waves. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY[J]. 2021, 64(9): [5] Tang, Chengfeng, Zhang, Pierre, Luo, Wentao, Li, Nan, Cai, YiFu, Pi, Shi. Measuring the Gravitomagnetic Distortion from Rotating Halos. I. Methods. ASTROPHYSICAL JOURNAL[J]. 2021, 911(1): http://dx.doi.org/10.3847/1538-4357/abe69e.
[6] Bian, Ligong, Cai, RongGen, Cao, Shuo, Cao, Zhoujian, Gao, He, Guo, ZongKuan, Lee, Kejia, Li, Di, Liu, Jing, Lu, Youjun, Pi, Shi, Wang, JianMin, Wang, ShaoJiang, Wang, Yan, Yang, Tao, Yang, XingYu, Yu, Shenghua, Zhang, Xin. The Gravitational-wave physics II: Progress. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY[J]. 2021, 64(12): [7] Tang, Chengfeng, Zhang, Pierre, Luo, Wentao, Li, Nan, Cai, YiFu, Pi, Shi. Measuring the gravitomagnetic distortion from rotating halos I: methods. 2021, http://arxiv.org/abs/2009.12011.
[8] Mizuno, Shuntaro, Mukohyama, Shinji, Pi, Shi, Zhang, YunLong. Universal upper bound on the inflationary energy scale from the trans-Planckian censorship conjecture. PHYSICAL REVIEW D[J]. 2020, 102(2): http://dx.doi.org/10.1103/PhysRevD.102.021301.
[9] Domnech, Guillem, Pi, Shi. NANOGrav Hints on Planet-Mass Primordial Black Holes. SCIENCE CHINA PHYSICS, MECHANICS & ASTRONOMY[J]. 2020, 65(3): 230411-, http://arxiv.org/abs/2010.03976.
[10] Cai, RongGen, Pi, Shi, Sasaki, Misao. Universal infrared scaling of gravitational wave background spectra. PHYSICAL REVIEW D[J]. 2020, 102(8): http://dx.doi.org/10.1103/PhysRevD.102.083528.
[11] Pi, Shi, Sasaki, Misao. Gravitational waves induced by scalar perturbations with a lognormal peak. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS[J]. 2020, http://dx.doi.org/10.1088/1475-7516/2020/09/037.
[12] Domenech, Guillem, Pi, Shi, Sasaki, Misao. Induced gravitational waves as a probe of thermal history of the universe. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS[J]. 2020, http://dx.doi.org/10.1088/1475-7516/2020/08/017.
[13] Zhou, Zihan, Jiang, Jie, Cai, YiFu, Sasaki, Misao, Pi, Shi. Primordial black holes and gravitational waves from resonant amplification during inflation. PHYSICAL REVIEW D[J]. 2020, 102(10): http://dx.doi.org/10.1103/PhysRevD.102.103527.
[14] Cai, RongGen, Pi, Shi, Sasaki, Misao. Gravitational Waves Induced by Non-Gaussian Scalar Perturbations. PHYSICAL REVIEW LETTERS[J]. 2019, 122(20): http://dx.doi.org/10.1103/PhysRevLett.122.201101.
[15] Cai, RongGen, Pi, Shi, Wang, ShaoJiang, Yang, XingYu. Pulsar timing array constraints on the induced gravitational waves. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS[J]. 2019, http://dx.doi.org/10.1088/1475-7516/2019/10/059.
[16] Pi, Shi, Sasaki, Misao, Zhang, Yingli. Primordial tensor perturbation in double inflationary scenario with a break. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS[J]. 2019, 2019(6): http://dx.doi.org/10.1088/1475-7516/2019/06/049.
[17] Han, Chengcheng, Pi, Shi, Sasaki, Misao. Quintessence saves Higgs instability. PHYSICS LETTERS B[J]. 2019, 791: 314-318, https://doaj.org/article/0dbc9ff76cb2418aa7c665f85d204f88.
[18] Cai, RongGen, Pi, Shi, Wang, ShaoJiang, Yang, XingYu. Resonant multiple peaks in the induced gravitational waves. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS[J]. 2019, 2019(5): http://dx.doi.org/10.1088/1475-7516/2019/05/013.
[19] Li, Dan, Pi, Shi, Scherrer, Robert J. Oscillating scalar fields in extended quintessence. PHYSICAL REVIEW D[J]. 2018, 97(2): https://www.webofscience.com/wos/woscc/full-record/WOS:000423429900008.
[20] Iyer, Aditya Varna, Pi, Shi, Wang, Yi, Wang, Ziwei, Zhou, Siyi. Strongly coupled quasi-single field inflation. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS[J]. 2018, https://www.webofscience.com/wos/woscc/full-record/WOS:000423323900001.
[21] Pi, Shi, Zhang, Yingli, Huang, QingGuo, Sasaki, Misao. Scalaron from R-2-gravity as a heavy field. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS[J]. 2018, http://dx.doi.org/10.1088/1475-7516/2018/05/042.
[22] Huang, QingGuo, Pi, Shi. Power-law modulation of the scalar power spectrum from a heavy field with a monomial potential. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS[J]. 2018, http://ir.itp.ac.cn/handle/311006/22930.
[23] Gong, JinnOuk, Leung, Godfrey, Pi, Shi. Probing reheating with primordial spectrum. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS[J]. 2015, http://dx.doi.org/10.1088/1475-7516/2015/05/027.
[24] Yi-Fu Cai, Jinn-Ouk Gong, Shi Pi, Emmanuel N. Saridakis, Shang-Yu Wu. On the possibility of blue tensor spectrum within single field inflation. NUCLEAR PHYSICS, SECTION B. 2015, 900: 517-532, http://dx.doi.org/10.1016/j.nuclphysb.2015.09.025.
[25] Cai, YiFu, Gong, JinnOuk, Pi, Shi. Inflation beyond T-models and primordial B-modes. PHYSICS LETTERS B[J]. 2014, 738: 20-24, https://doaj.org/article/12a020998e8a495e924bfbb390ffe985.
[26] Gong, JinnOuk, Pi, Shi, Sasaki, Misao. Equilateral non-Gaussianity from heavy fields. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS[J]. 2013, http://dx.doi.org/10.1088/1475-7516/2013/11/043.
[27] Pi, Shi, Sasaki, Misao. Curvature perturbation spectrum in two-field inflation with a turning trajectory. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS[J]. 2012, http://dx.doi.org/10.1088/1475-7516/2012/10/051.
[28] Pi, Shi, Wang, Du. Cosmological perturbations in inflation with multiple sound speeds. NUCLEAR PHYSICS B[J]. 2012, 862(2): 409-429, http://dx.doi.org/10.1016/j.nuclphysb.2012.04.017.
[29] Pi, Shi, Wang, Tower. 1/R correction to gravity in the early universe. PHYSICAL REVIEW D[J]. 2009, 80(4): https://www.webofscience.com/wos/woscc/full-record/WOS:000269641400018.
[30] Lu DaHai, Bo, Zhang, Shi, Pi, Deng WeiZhen, Chen XiaoLin. Structure of D pair in collective states of nuclei. COMMUNICATIONS IN THEORETICAL PHYSICS[J]. 2006, 46(6): 1047-1051, https://www.webofscience.com/wos/woscc/full-record/WOS:000243014800017.
[31] Gong, Jinn-Ouk, Han, Chengcheng, Pi, Shi. Trail of the Higgs in the primordial spectrum. http://arxiv.org/abs/1511.07604.
[32] Chen, Bin, Pi, Shi, Tang, Jin-Zhang. Power spectra of scalar and tensor modes in modified Horava-Lifshitz gravity. http://arxiv.org/abs/0910.0338.
[33] Chen, Bin, Pi, Shi, Tang, Jin-Zhang. Scale Invariant Power Spectrum in Ho\v{r}ava-Lifshitz Cosmology without Matter. http://arxiv.org/abs/0905.2300.

   

（ 1 ） 原初黑洞的起源、演化和观测特征, 参与, 国家任务, 2021-12--2025-11
（ 2 ） 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, 负责人, 国家任务, 2022-01--2026-09
（ 3 ） 中国科学院稳定支持基础研究领域青年团队计划《宇宙学和天文学的前沿重大问题》, 参与, 中国科学院计划, 2021-06--2026-06

现指导学生

王嘉宁  博士研究生  070201-理论物理  

洪文聪  硕士研究生  070201-理论物理  

王奥  硕士研究生  070201-理论物理  

1. "Non-Gaussianity in the curvature perturbation and PBH formation", The 32nd Workshop on General Relativity and Gravitation in Japan, Nov 27 - Dec 1, 2024. Nagoya, Japan. Plenary talk, 

2. "Non-Gassian curvature perturbation and its application", Athens Symposium on Exploring the Universe, June 10 - 14, 2024. Athens, Greece. Plenary talk.

3. "曲率扰动的非高斯性及其对原初黑洞的影响", Chinese Physics Fall Meeting 2024. Ningxia University. Invited talk.