…is fundamental to the https://en.wikipedia.org/wiki/Initial_value_formulation_(gen... about which Rovelli has written extensively (e.g. at https://arxiv.org/abs/gr-qc/0202079 and chapter 4 of his book Quantum Gravity, draft on his own page http://www.cpt.univ-mrs.fr/~rovelli/book.pdf ). Unfortunately philosophers have several different versions of "block universe" with varying degrees of determinism. The growing…
…don’t consider them to be definitive, but see them as open to improvement. It’s the awareness of our ignorance that gives science its reliability." Science is never settled. Rovelli's book is about Loop Quantum Gravity; as unsettled a field of research in science _today_. [0] https://www.goodreads.com/book/show/29767627-reality-is-not-...
…by scientists and philosophers throughout history. An intellectually stimulating and not overly technical read about the concept of a universe without time and some of the latest developments in Loop Quantum Gravity (Rovelli’s field of work). I also have a blog post on my Top 10 books from last year: https://medium.data4sci.com/top-10-books-we-read-in-2022-c3d...
It is true that there is no experimental evidence, but I think there are some convincing arguments that something must happen at the Planck scale (for very short distances) in a full quantum-gravity theory. Here are some quotes from "Covariant Loop Quantum Gravity", Rovelli and Vidotto (slightly redacted). I suggest the whole chapter 1, in particular 1.2 to get an idea of why fundamentally spacetime…
……对 https://en.wikipedia.org/wiki/Initial_value_formulation_(gen... 来说至关重要，Rovelli 就此写过大量内容（例如在 https://arxiv.org/abs/gr-qc/0202079 以及他的《Quantum Gravity》一书第4章，草稿在他的个人主页上：http://www.cpt.univ-mrs.fr/~rovelli/book.pdf ）。遗憾的是，哲学家们对“块状宇宙”（block universe）有着好几种不同版本，其决定论程度也各不相同。不断增长的……
…is fundamental to the https://en.wikipedia.org/wiki/Initial_value_formulation_(gen... about which Rovelli has written extensively (e.g. at https://arxiv.org/abs/gr-qc/0202079 and chapter 4 of his book Quantum Gravity, draft on his own page http://www.cpt.univ-mrs.fr/~rovelli/book.pdf ). Unfortunately philosophers have several different versions of "block universe" with varying degrees of determinism. The growing…
……不认为它们是板上钉钉的定论，而是看作有待改进的。正是对自身无知的清醒认知，才赋予了科学可靠性。” 科学从来不是一锤定音的。Rovelli 的书讲的是圈量子引力（Loop Quantum Gravity）；在《当今》的科学界，这可是一个悬而未决的研究领域。[0] https://www.goodreads.com/book/show/29767627-reality-is-not-...
…don’t consider them to be definitive, but see them as open to improvement. It’s the awareness of our ignorance that gives science its reliability." Science is never settled. Rovelli's book is about Loop Quantum Gravity; as unsettled a field of research in science _today_. [0] https://www.goodreads.com/book/show/29767627-reality-is-not-...
……历史上历代科学家和哲学家的观点。这是一本既能启发智力又不会过于晦涩的技术性读物，探讨了没有时间概念的宇宙，以及圈量子引力（Loop Quantum Gravity，Rovelli 的研究领域）的一些最新进展。我还写了一篇博客总结了去年我读过的十佳书籍：https://medium.data4sci.com/top-10-books-we-read-in-2022-c3d...
…by scientists and philosophers throughout history. An intellectually stimulating and not overly technical read about the concept of a universe without time and some of the latest developments in Loop Quantum Gravity (Rovelli’s field of work). I also have a blog post on my Top 10 books from last year: https://medium.data4sci.com/top-10-books-we-read-in-2022-c3d...
确实没有实验证据，但我认为有一些令人信服的论据表明，在完备的量子引力理论中，普朗克尺度（极短距离下）必然会发生某些事情。以下是 Rovelli 和 Vidotto 所著《Covariant Loop Quantum Gravity》中的一些摘录（略有删减）。我建议通读第1章，尤其是1.2节，来了解为什么从根本上说时空……
It is true that there is no experimental evidence, but I think there are some convincing arguments that something must happen at the Planck scale (for very short distances) in a full quantum-gravity theory. Here are some quotes from "Covariant Loop Quantum Gravity", Rovelli and Vidotto (slightly redacted). I suggest the whole chapter 1, in particular 1.2 to get an idea of why fundamentally spacetime…