Disturbing Implications of a Cosmological Constant · HackerPapers discussions

Disturbing Implications of a Cosmological Constant — mentioned by Kotlopou

Fri, 04 Sep 2026 08:27:06 GMT

(not the person you replied to) I have no idea what you're hoping the contribution would be. The AdS/CFT correspondence is 29 years old by now and it doesn't seem to apply to our spacetime, where the cosmological constant seems to be positive rather than negative. There are some puzzling consequences of the holographic principle in that scenario as well (https://arxiv.org/pdf/hep-th/0208013), but the linked articles don't talk about them? Quanta articles are written for people with no background whatsoever, which makes them impenetrable if you have a bit of background and are trying to figure…

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Disturbing Implications of a Cosmological Constant — mentioned by raattgift

Sat, 15 Aug 2020 08:49:34 GMT

> You can't remember states you haven't been in If only memory worked that way! False memories are commonplace. Where exactly did you put your keys? Even if you give the right location, is that a true memory of the state you and the keys were in when you separated, or is it a retrodiction ("I probably put them in their usual storage place")? > A memory system that operates on the timescales of ... You mean one that measures parts of the world periodically? ISTR we discussed this some exp(10^120) years ago[1] but I forget whether we reached any conclusions. - -- [1] Dyson, Kleban & Susskind…

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Disturbing Implications of a Cosmological Constant — mentioned by raattgift

Mon, 20 Jan 2020 08:30:46 GMT

> arguments in favor of the Boltzmann Brain are written before the discovery of the Hubble's law (1929) I'm pretty sure the Boltzmann brain paradox is 20th century, likely originating with John D. Barrow and Frank Tipler -- they discuss it in e.g. chapters 6 and 10 of their 1986 book on the anthropic cosmological principle, although afaict the actual words "Boltzmann['s] brain[s]" first popped up in the early 2000s. Dyson, Kleban and Susskind (DKS 2002, https://arxiv.org/abs/hep-th/0208013) is firmly after the widespread acceptance of the lines of evidence pretty much compelling an…

Paper and discussion history. A mention is not an endorsement.