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<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Negative Absolute Temperature for Motional Degrees of Freedom · HackerPapers discussions</title><link>https://hackerpaper.kaipfister.de/p/1211.0545/</link><description>Collected HN comments and submissions linking this paper.</description><language>en</language><lastBuildDate>Mon, 02 Nov 2026 11:16:22 GMT</lastBuildDate><atom:link href="https://hackerpaper.kaipfister.de/p/1211.0545/feed.xml" rel="self" type="application/rss+xml" /><item><title>Negative Absolute Temperature for Motional Degrees of Freedom — mentioned by Xcelerate</title><link>https://news.ycombinator.com/item?id=5004800</link><guid isPermaLink="false">urn:hackerpapers:mention:1211.0545:5004800</guid><pubDate>Thu, 03 Jan 2013 21:33:06 GMT</pubDate><description>&lt;p&gt;I don&amp;#x27;t really like the misleading headline, although it seems as though the actual paper does it as well (http://arxiv.org/abs/1211.0545). Temperature is conventionally defined as the average kinetic energy of a collection of particles. However, in statistical mechanics, you derive thermodynamic relations from the principles of quantum mechanics. It turns out there is a term β which for most purposes seems to match up with 1/kT, where k is the Boltzmann constant and T is classical temperature. According to this article, there are some occasions where &amp;quot;conventional&amp;quot; T and quantum mechanical T…&lt;/p&gt;&lt;p&gt;&lt;a href="https://hackerpaper.kaipfister.de/p/1211.0545/"&gt;Paper and discussion history&lt;/a&gt;. A mention is not an endorsement.&lt;/p&gt;</description><category>cond-mat.quant-gas</category></item></channel></rss>
