生命=物質+資訊


生命=物質+資訊

《The Demon in the Machine》 這本科普書搭配維也納大學教授寫的教科書《Modern Quantum Theory》一起讀,從PART II:Entanglement and Non-Locality開始讀起,進入量子資訊。

《The Demon in the Machine》:用「資訊、熵、Maxwell demon」把生命、目的性、cause power這些大哉問串起來,偏概念與跨域視角。書裡就直接點出:demon 要靠蒐集資訊來做分揀,於是「把資訊帶進物理」會打開一場革命。

《Modern Quantum Theory》:把量子力學一路鋪到糾纏、量子資訊、熵、量子通道、開放系統、退相干、測量等,理論與計算的完整路線——引用 Brukner–Zeilinger 的說法:量子態可視作我們對系統的表徵;測量後量子態的改變,是因為我們的知識變了,所以沒有什麼「鬼魅般的超距作用」,而是整體知識表徵的同步更新。

Davies——在生命與複雜系統裡,真的存在一堆“像Demon一樣”的資訊流程/控制機制,它們讓物質「被資訊牽引」,把能量流導向有功能的秩序;「資訊像能量一樣能讓物質“動起來”」,生命的秩序是從資訊如何被組織而浮現的。
「資訊—熱力學—生命—心智」


snehabandhanaviśuddhipadam etad yad uta bodhisattvapadam

愛縛清淨句是菩薩位(snehabandhanaviśuddhipadam etad yad uta bodhisattvapadam)

(對異性的愛與激烈的擁抱,也是清淨菩薩的境界。此即是愛金剛女的覺有情境界)

《最上根本大樂金剛不空三昧大教王經 》云:「念金剛(Sneha-vajrā)大尊,其身青白色,手持摩竭幢」。

青白色即淺青色,在印度傳統是代表春天的顏色,即春情發動。

唐代不空三藏所傳之《金剛頂瑜伽密教》即說明愛金剛女(Sneha-vajrā)即是度母(Tārā),如《金剛頂瑜伽金剛薩埵五祕密修行念誦儀軌》所云:「愛金剛者(Sneha-vajrā),是多羅菩薩(Tārā),住大悲解脫,愍念無邊受苦有情,常懷拔濟施與安樂。」愛金剛女(Sneha-vajrā)即是度母(Tārā),她住大悲解脫,即是處於大悲解脫態,又此狀態即是「由大悲故不住涅槃」、「恒作眾生利。而不趣涅槃」,憐愍一切有情猶如她的孩子,皆起拔濟安樂之心而予以拔濟苦難施予安樂。

愛金剛女(Sneha-vajrā)屬於五秘密之四金剛女,她代表蓮華部,經云:「愛金剛者持摩竭幢。能淨意識緣慮於淨染有漏心,成妙觀察智。」摩竭幢,「幢」表「行導之首」,「摩竭」表「大悲愛染」,「摩竭幢」即是表「愛金剛女之三摩地行」,即是《理趣經 》所云:「如蓮體本染,不為垢所染,諸慾性亦然,不染利群生」,摩竭魚也是慾望之神迦摩的象徵,代表愛染吞食一切所慾,密教魔竭魚吞噬即隱喻女陰吞噬陽根,唯有對方達到高潮後,才吐出陽具,即以女性對男性之愛來表示「慈悲救度」,令對方證得菩提,可理解其甚深密義。

Quantum Mechanics is Magic.

《The Magick of Matter: Crystals, Chaos and the Wizardry of Physics》(中譯書名凝態物理:從半導體、磁浮列車到量子電腦,看穿隱藏在現代科技背後的混沌、秩序與魔法)

在書中多次提到 David Mermin。讀著讀著會覺得,作者不只是在引用一位大師的名言與文章,更像是在用整本書向這位量子力學與凝態物理的大師致敬:從「shut up and calculate」的務實態度,到把量子糾纏寫成一句直球的 “Quantum Mechanics is Magic.”,甚至連「Mermin 跟 Merlin 只差一個字母」這種彩蛋都放進註解裡///

以下列舉書中提到的內容///

1.There are many competing philosophical interpretations of quantum mechanics:proposals as to what the mathematical results actually say about reality. These interpretations cannot be distinguished by experiment. I will try to avoid letting aurrent of speculation sweep us into that murky ocean by sticking where I can to experimental observations; it is not my purpose in this book to answer questions that have eluded a century of thought. Having a coherent philosophy is important, but most physicists who use quantum mechanics day to day just get on with it without worrying

about why it works, in much the same way that car mechanics don’t spend their days fretting over how cars can move in the light of ancient Greek philosophers’ arguments that all movement is an illusion. The approach was summarised by renowned quantum mechanic Professor David Mermin at Cornell as ‘shut up and calculate’.

2.Probably the safest way to think of them is by applying Mermin’s maxim, ‘shut up and calculate’: quantum corrections are intermediate steps required in mathematical calculations. If they have a firm physical reality, it is not yet fully understood.

3.David Mermin:"I always write about physics to make myself understand better, because equations, in a sense, free one from the burden of thinking about the subject.

4. The title of this section is shamelessly stolen from a homage to a popular article on quantum entanglement by David Mermin. The opening line of that article ischaracteristically to the point: Quantum Mechanics is Magic.  

5. At some point I found myself talking to Mermin. Aside from becoming thoroughly acquainted with his textbook the

following year (to such a degree that I could consistently open it on precisely the page I needed for a variety of topics) I subsequently found myself consulting him on research problems as my career progressed. He has always proven as helpful and encouraging as he was during our first meeting in the palace.

It was from an article of Mermin’s that I first felt I’d really started to understand quantum entanglement. I will reproduce his example here, rephrased only in context.

*N. D. Mermin Is the moon there when nobody looks? Reality and the quantum theory.

 *N. D. Mermin Quantum Mysteries Revisited https://share.google/gwKI1KlFqNAEk8Yun

6.In 1935 Einstein published a paper with Boris Podolski and Nathan Rosen intended to show that quantum mechanics could not be a full account of reality.It outlined what is now called the EPR paradox, after its authors’ initials. As Mermin put it: ‘The EPR experiment is as close to magic as any physical phenomenon I know of, and magic should be enjoyed.’ 

7.That Mermin’s name is one letter away from Merlin is purely coincidental .   XDDDDDDDDDDDDDDDDDDDD!