量子计算机实现的全息虫洞 - holographic wormhole

[TheMatrix]

Woit最新贴的Nature 虫洞论文Holographic wormhole也很有意思，cover story，炒作的杰作。他反弦理论数十年如一日，这次也不意外，估计学术界大佬全得罪完了，在物理学都混不下去了，只能在数学系当lecturer。

https://www.nature.com/nature/volumes/612/issues/7938

[TheMatrix]

这个新闻值得单开一帖。John Baez 的评论也犀利：

John Baez says:
December 1, 2022 at 6:05 am
Unfortunately Natalie Wolchover didn’t seem to realize that this hype was merely hype: on Twitter she wrote: “Curious to see so many people approve of the article but bristle at the headline. Can someone (who has actually read our article or the Nature paper) articulate *why* they don’t think it’s valid to say the experiment created a wormhole?”

Various people who know what’s going on tried to explain it carefully and gently. But I think one has to be brutally clear in situations like this, so I replied:

They did an simulation that crudely, roughly mimicked a system dual to a 2d wormhole. So it’s like a kid scrawls a picture of an inside-out building and the headline blares

BREAKING NEWS: CHILD BUILDS TAJ MAHAL!

[Caravel]

这类黑洞的Hype一般都是搞弦理论的人弄出来的，什么Ads/CFT对偶性，Ads根本不是我们所在的时空

背后的model 是SYK model
https://en.wikipedia.org/wiki/Sachdev%E ... taev_model

看上去就是一种randomnized的quantum spin model， 原来的题目是random quantum Heisenberg magnet， 不知道为什么现在搞成量子引力的模型了

https://pic4.zhimg.com/v2-70080807319e0 ... e6cf_b.jpg

[牛河梁]

这类黑洞的Hype一般都是搞弦理论的人弄出来的，什么Ads/CFT对偶性，Ads根本不是我们所在的时空

背后的model 是SYK model
https://en.wikipedia.org/wiki/Sachdev%E ... taev_model

看上去就是一种randomnized的quantum spin model， 原来的题目是random quantum Heisenberg magnet， 不知道为什么现在搞成量子引力的模型了

https://pic4.zhimg.com/v2-70080807319e0 ... e6cf_b.jpg

谷歌这帮人还能有什么credit。吹牛不上税太多了。各种好端端的词汇都被它们玩坏了。

[TheMatrix]

谷歌这帮人还能有什么credit。吹牛不上税太多了。各种好端端的词汇都被它们玩坏了。

谷歌AI还是有真东西的。

[牛河梁]

谷歌AI还是有真东西的。

不评论谷歌AI。我上面说的是谷歌量子计算。