https://hackerpaper.kaipfister.de/p/0807.3472/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=27798183urn:hackerpapers:mention:0807.3472:27798183Sun, 11 Jul 2021 03:05:28 GMT<p>Conformally symmetric critical systems are often, though not always, studied by modeling them by conformal field theories, which do involve an action obeying a conformal symmetry. A good reference about conformal field theories is any book or paper by John Cardy who is exceptionally clear. Here is a good one where he shows an action of a CFT at the beginning of section 3.0.1: https://arxiv.org/abs/0807.3472 For some reason the Wikipedia page on CFT’s says they are quantum which can be true but is certainly not necessarily the case, and a huge amount of the beautiful mathematics of CFTs was…</p><p><a href="https://hackerpaper.kaipfister.de/p/0807.3472/">Paper and discussion history</a>. A mention is not an endorsement.</p>cond-mat.stat-mech