The speaker and team revisit a question asked by Dyson: “Is a graviton detectable?” They demonstrate that in both Dyson’s original sense and in a more modern measurement-theoretic sense, it is possible to construct a detector sensitive to single gravitons, and in fact a variety of existing and near-term gravitational wave detectors can achieve this. However, while such a signal would be consistent with the quantization of the gravitational field, they draw on results from quantum optics to show how the same signal could just as well be explained via classical gravitational waves. They outline the kind of measurements that would be needed to demonstrate quantization of gravitational radiation and explain why these are substantially more difficult than simply counting graviton clicks or observing gravitational noise in an interferometer, and likely impossible to perform in practice.
時間：2023.12.05(二) 23:00~24:20
頻道：Zoom ID:421-480-1692 ← cosmology
講者： Nicholas Rodd (CERN)
語言：英語
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【此屬轉載信息，以主事單位發布為準】
“Copernicus Webinar and Colloquium Series”: To promote scientific discussions during this pandemic, they are organizing an online seminar series, i.e. Copernicus Webinar Series, seeking the most outstanding speakers to introduce innovative ideas and important progress in the field of gravity and cosmology. This series is named after the famous Polish Astronomer, Nicolaus Copernicus, whose discovery eventually marked the dawn of modern science.
歐洲核子研究組織CERN
此活動由歐洲核子研究組織CERN主辦。
