活动
Astronomy Colloquium (20.4/2022)：Testing theories of dark energy with laboratory experiments
Description
Title: Testing theories of dark energy with laboratory experiments
Speaker: Jianhua He（何建华）
Abstract:
On cosmological scales, a mysterious component with positive energy but negative, repulsive pressure makes up the bulk of the Universe, which drives the expansion of the Universe to speed up. This exotic component is called dark energy. However, understanding the nature of dark energy turns out to be extremely difficult, which remains one of the most profound challenges in modern physics. Conventionally, theories of dark energy are tested on cosmological scales from observations such as the cosmic microwave background (CMB) and baryon acoustic oscillations (BAO). However, in recent years, with ultra-precision measurements, laboratory experiments can provide robust tests on dark energy as well. In this talk, I will talk about our recent experiment progress, and I will also discuss the possible ways to unveil the nature of dark energy in the future.
Bio:
Associate Professor in School of Astronomy & Space Science, Nanjing University.
2006 B.S., Shanghai Jiao Tong University.
2011 PhD, Fudan University.
2011-2015 Postdoc in National Institute for Astrophysics (INAF), Italy
2015-2018 International Junior Research Fellowship, ICC, Durham University
2018.12-Now, School of Astronomy & Space Science, Nanjing University.
Research interests: cosmic microwave background, the formation of large-scale structure and galaxy survey, modified gravity theory, gravitational wave, gravity experiments
Abstract:
On cosmological scales, a mysterious component with positive energy but negative, repulsive pressure makes up the bulk of the Universe, which drives the expansion of the Universe to speed up. This exotic component is called dark energy. However, understanding the nature of dark energy turns out to be extremely difficult, which remains one of the most profound challenges in modern physics. Conventionally, theories of dark energy are tested on cosmological scales from observations such as the cosmic microwave background (CMB) and baryon acoustic oscillations (BAO). However, in recent years, with ultra-precision measurements, laboratory experiments can provide robust tests on dark energy as well. In this talk, I will talk about our recent experiment progress, and I will also discuss the possible ways to unveil the nature of dark energy in the future.
Bio:
Associate Professor in School of Astronomy & Space Science, Nanjing University.
2006 B.S., Shanghai Jiao Tong University.
2011 PhD, Fudan University.
2011-2015 Postdoc in National Institute for Astrophysics (INAF), Italy
2015-2018 International Junior Research Fellowship, ICC, Durham University
2018.12-Now, School of Astronomy & Space Science, Nanjing University.
Research interests: cosmic microwave background, the formation of large-scale structure and galaxy survey, modified gravity theory, gravitational wave, gravity experiments
Time:14:00-15:00PM, 20/Apr, Wednesday
Meeting ID: 831 4360 9634
Passcode: 436377
Joining Link: https://us02web.zoom.us/j/83143609634?pwd=K0tQcERUTzBldHp0emE0b
Meeting ID: 831 4360 9634
Passcode: 436377
Joining Link: https://us02web.zoom.us/j/83143609634?pwd=K0tQcERUTzBldHp0emE0b
