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cold atoms
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- 1
Physicists report a tabletop experiment using ultracold atoms to simulate the creation of particles, mimicking processes that normally occur in extreme environments such as the early universe or strong quantum fields. By controlling cold atomic gases, researchers can model quantum field behavior in the lab, offering a new way to test ideas that are otherwise out of reach of direct experiments.
- 2UN Chief Warns of Most Dangerous Nuclear Moment Since Cold War●At ‘Most Dangerous Nuclear Moment’ Since Cold War Ended, Secretary-General Observance Message Urges Changing Course, Replacing Threats with Dialogue
UN Secretary-General Antonio Guterres marked a nuclear disarmament observance with a stark message, calling the present the most dangerous nuclear moment since the Cold War ended. He urged world powers to change course, replacing nuclear threats and saber-rattling with dialogue and diplomacy, warning that rising tensions have brought atomic risks back to levels not seen in decades.