Understanding thermal nature of de Sitter spacetime via inter-detector interaction · HackerPapers discussionshttps://hackerpaper.kaipfister.de/p/2211.14747/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMTUnderstanding thermal nature of de Sitter spacetime via inter-detector interaction — mentioned by antonvshttps://news.ycombinator.com/item?id=35693859urn:hackerpapers:mention:2211.14747:35693859Mon, 24 Apr 2023 22:00:11 GMT<p>Correct, that&#x27;s a key fact about the underlying effects in question, of which Hawking radiation is just a consequence: different observers see different particles in the vacuum. In 1976, Bill Unruh published &quot;Notes on black-hole evaporation&quot;[1], in which he showed that &quot;an accelerated detector even in flat spacetime will detect particles in the vacuum&quot; - now known as the Unruh effect This means that an observer in an accelerated reference frame will observe particles in the vacuum where an inertial observer will observe none. The presence of certain particles - the ones we call Hawking…</p><p><a href="https://hackerpaper.kaipfister.de/p/2211.14747/">Paper and discussion history</a>. A mention is not an endorsement.</p>gr-qc