![\"Scientists](\"https:\/\/www.newsbeep.com\/us\/wp-content\/uploads\/2025\/11\/scientists-turn-the-fa.jpg\" "\\"AI")
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AI illustration of the proposed experiment\u2014Time-Resolved and Superradiantly Amplified Unruh Effect. Credit: Navdeep Arya<\/p>\n
Researchers from Stockholm University and the Indian Institute of Science Education and Research (IISER) Mohali have reported a practical way to spot one of physics’ strangest predictions: the Unruh effect, which says that an object speeding up (accelerating) would perceive empty space as faintly warm. But, trying to heat something up by accelerating it unimaginably fast is a nonstarter in the lab. The team has shown how to convert that tiny effect into a clear, timestamped flash of light.<\/p>\n
Here’s the simple picture. Imagine a group of atoms between two parallel mirrors. The mirrors can either speed up or slow down light emission from the atoms. When these atoms cooperate, they can emit together like a choir\u2014much louder than solo singers. This collective outburst is called superradiance.<\/p>\n
The new study explains how the acceleration-induced warmth of empty space, if experienced by the atoms, quietly nudges them so that the choir’s burst happens earlier than it would for atoms sitting still. That earlier-than-expected flash becomes a clean, easy-to-spot signature of the Unruh effect. The work, co-authored with Kinjalk Lochan and Sandeep K. Goyal of IISER Mohali, is now published<\/a> in Physical Review Letters.<\/p>\n “We’ve found a way to turn the Unruh effect’s whisper into a shout,” said Akhil Deswal, a Ph.D. student at IISER Mohali. “By using carefully spaced high-quality mirrors, we make ordinary background signals quieter while the acceleration-seeded burst comes out early and clean.”<\/p>\n Crucially, the proposal demands significantly lower acceleration compared to the requirement in the absence of high-quality mirrors.<\/p>\n “Timing is the key,” added Navdeep Arya, a postdoctoral researcher at Stockholm University. “The choir of atoms is not only louder but also shouts earlier if they feel the faint Unruh effect-related warmth of empty space<\/a>. That simple clock-like marker can make it easier to separate the Unruh signal from everyday noise.”<\/p>\n By theoretically addressing a decades-old detection challenge, the idea opens a bridge between available laboratory devices and phenomena usually linked to extreme conditions. Because acceleration and gravity are closely related, similar timing<\/a> tricks might one day help researchers probe subtle, gravity<\/a>-driven quantum effects\u2014right on the lab bench.<\/p>\n More information: \n\t\t\t\t\t\t\t\t\t\t\t\t\tProvided by \t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n \n\t\t\t\t\t\t\t\t\t\t\t\tCitation: \n\t\t\t\t\t\t\t\t\t\t\t This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
\n\t\t\t\t\t\t\t\t\t\t\t\tAkhil Deswal et al, Time-Resolved and Superradiantly Amplified Unruh Effect, Physical Review Letters (2025). DOI: 10.1103\/6z1l-kkmk<\/a><\/p>\n
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tStockholm University<\/a>
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\n\t\t\t\t\t\t\t\t\t\t\t\tTurning the faint quantum ‘glow’ of empty space into a measurable flash (2025, November 10)
\n\t\t\t\t\t\t\t\t\t\t\t\tretrieved 10 November 2025
\n\t\t\t\t\t\t\t\t\t\t\t\tfrom https:\/\/phys.org\/news\/2025-11-faint-quantum-space.html\n\t\t\t\t\t\t\t\t\t\t\t <\/p>\n
\n\t\t\t\t\t\t\t\t\t\t\t part may be reproduced without the written permission. The content is provided for information purposes only.\n\t\t\t\t\t\t\t\t\t\t\t <\/p>\n","protected":false},"excerpt":{"rendered":"AI illustration of the proposed experiment\u2014Time-Resolved and Superradiantly Amplified Unruh Effect. Credit: Navdeep Arya Researchers from Stockholm University…\n","protected":false},"author":2,"featured_media":284393,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[9151,13515,199,13513,79,13514,74,10353],"class_list":{"0":"post-284392","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-physics","8":"tag-materials","9":"tag-nanotech","10":"tag-physics","11":"tag-physics-news","12":"tag-science","13":"tag-science-news","14":"tag-technology","15":"tag-technology-news"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/284392","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/comments?post=284392"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/284392\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media\/284393"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media?parent=284392"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/categories?post=284392"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/tags?post=284392"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}