Something Deeply Hidden uantum Worlds and the Emergence of Spacetime epub ´ Hardcover read Ç sean carroll

doc Something Deeply Hidden uantum Worlds and the Emergence of Spacetime

Something Deeply Hidden uantum Worlds and the Emergence of Spacetime epub ´ Hardcover read Ç sean carroll ☆ As you read these words copies of you are being created Sean Carroll theoretical physicist and one of this world’s most celebrated writers on science reEen in crisis since 1927 uantum mechanics has always had obvious gaps which have come to be simply ignored Science popularizers keep telling us how weird it is how impossible it is to understand Academics discourage students from working on the dead end of uantum foundations Putting his professional reputation on the line with this audacious yet entirely reasonable book Carroll says that the crisis can now come to an end We just have to accept that there is than one of us in the universe There are many many Sean Carrolls Many of every one of us Copies of you are Rather than the confusing publisher's blurb I recommend starting with the author's essay about his book struggled with Carroll's book which doesn't make a whole lot of sense to this physics impaired old geologist He writes well and the history of the hostile reception to new research on the roots of uantum theory is deeply disturbing Make no mistake no one doubts that uantum mechanics works And is deeply weird Feynman once said something like I think I can safely say that nobody understands uantum mechanics Still true sfaictCarroll prefers Many Worlds as the best theoretical basis for M And he is a physics prof at Cal Tech Feynman's old home base But gosh one wave function for the entire universe And a new world is created every time there's a subatomic interaction The number of new worlds created would far exceed the number of atoms in the universe And no way to experimentally test any of this Good grief Angels dancing on the heads of pinsWell Since the book is already overdue I think I'll call it good and go on to something else I read about half of the book and kept getting lost rereading sections and trying again My usual problem with trying to understand theoretical physics 25 stars for what I read rounded up for the good writing interesting science history and provocative philosophizing Do note that I'm not ualified to judge the physics but I do have a finely tuned BS detector which kept going off in this bookHere's Manuel Antão's fine review pointing out these problems and many which is when I realized I should give up is better ualified than me to judge the physics Well read guy tooNature's review decades on the theory is one of the most bizarre yet fully logical ideas in human history growing directly out of the fundamental principles of uantum mechanics without introducing extraneous elements It has become a staple of popular culture although the plots of the many films and television series inspired by it invariably flout the theory by relying on contact between the parallel worlds as in the 2011 movie Another EarthIn Something Deeply Hidden Carroll cogently explains the many worlds theory and its post Everett evolution and why our world nevertheless looks the way it does Largely because of its purely logical character Carroll calls Everett’s brainchild “the best view of reality we have” Carroll argues that the many worlds theory is the most straightforward approach to understanding uantum mechanics It accepts the reality of the wave function In fact it says that there is one wave function and only one for the entire Universe Further it states that when an event happens in our world the other possibilities contained in the wave function do not go away Instead new worlds are created in which each possibility is a reality The theory’s sheer simplicity and logic within the conceptual framework of uantum mechanics inspire Carroll to call it the “courageous” approach Don’t worry about those extra worlds he asserts — we can’t see them and if the many worlds theory is true we won’t notice the difference The many other worlds are parallel to our own but so hidden from it that they “might as well be populated by ghosts” Something Deeply Hidden is aimed at non scientists with a sidelong glance at physicists still uarrelling over the meaning of uantum mechanics Carroll brings the reader up to speed on the development of uantum physics from Max Planck to the present and explains why it is so difficult to interpret before expounding the many worlds theory Dead centre in the book is a “Socratic dialogue” about the theory’s implications This interlude between a philosophically sensitive physicist and a scientifically alert philosopher is designed to sweep away intuitive reservations that non scientists might have

doc ↠ Something Deeply Hidden uantum Worlds and the Emergence of Spacetime ↠ Sean Carroll

As you read these words copies of you are being created Sean Carroll theoretical physicist and one of this world’s most celebrated writers on science rewrites the history of 20th century physics Already hailed as a masterpiece Something Deeply Hidden shows for the first time that facing up to the essential puzzle of uantum mechanics utterly transforms how we think about space and time His reconciling of uantum mechanics with Einstein’s theory of relativity changes well everything Most physicists haven’t even recognized the uncomfortable truth physics has b This book is about the Many Worlds hypothesis of uantum mechanics It is a deep description of the hypothesis and its context in uantum mechanics uantum mechanics does not violate logic; its precise predictions are correct and among the most accurate of any scientific theory But its foundations are still uite controversial especially when it comes to understanding the role of gravitation The Many Worlds hypothesis is a simple way to explain some of the seeming paradoxes of uantum mechanics There are alternative hypotheses and the book covers these as wellI can't say that I learned anything I am a physicist but the book did focus my attention on a few key ideas First it is incorrect to say that atoms are made up mostly of empty space; particles are not tiny points but are wave functions that are spread out in space Another example The Heisenberg Uncertainty Principle does not say that the act of measuring a uantity disturbs the system In addition it does not say that you cannot simultaneously measure position and momentum perfectly at the same time Instead it says that a definite position and momentum velocity do not even exist simultaneously The wave function solution to the Schrodinger Euation acts as a wave and so it can be analyzed like a Fourier Transform Think of a sudden audible transient like a click The click occurs at a definite point in time but it has no specific pitch because its spectrum is broadband Likewise a pure audible tone must occur over a span of time; it does not occur at a specific definite timeHere's the problem with the book Like many technical books that are aimed at non specialists it gets deep into jargon and concepts that are totally unfamiliar The non specialist can understand all the words and maybe even entire sentences But it comes off sounding like a foreign language And there is an additional problem with this book Much of the book focuses on the Schrodinger Euation which is a typical type of partial differential euation But unless you have studied similar euations you cannot really understand the physical concepts described in this book A general form of the euation is written in the book but it is so simplified that to a mathematician it doesn't convey much of anything and to a non mathematician it is gibberishThis book is an excellent attempt at explaining some of the deepest mysteries of uantum mechanics But the fundamentals are not covered well enough for a general reader to grasp all the arguments presented here

Sean Carroll ↠ Something Deeply Hidden uantum Worlds and the Emergence of Spacetime text

Something Deeply Hidden uantum Worlds and the Emergence of SpacetimeGenerated thousands of times per second The Many Worlds Theory of uantum behavior says that every time there is a uantum event a world splits off with everything in it the same except in that other world the uantum event didn't happen Step by step in Carroll's uniuely lucid way he tackles the major objections to this otherworldly revelation until his case is inescapably established Rarely does a book so fully reorganize how we think about our place in the universe We are on the threshold of a new understanding of where we are in the cosmos and what we are made TL;DR Sean Carroll’s Something Deeply Hidden tackles the difficult many worlds theories of uantum mechanics It’s weird; it’s funny; it’s deeply philosophical and worth reading Highly recommendedDisclaimer I received a free copy of this as an ebook from the publisher in exchange for an honest review Find this and other reviews at my website Primmlifecom Review According to uantum mechanics it’s entirely possible that there are multiple copies of you reading multiple copies of this review The many worlds approach to uantum mechanics says that the world decoheres into various branches Branching reality is a difficult subject but it is one that makes sense when interpreting exactly what uantum physics represent Physicist author and podcaster Sean Carroll attempts to explain these subtle and difficult philosophical uestions in his latest book Something Deeply Hidden from Dutton This is a book of big ideas explained to an audience of anyone It doesn’t spoon feed the reader answers but nor does it put concepts too far out of reach For anyone interested in uantum mechanics this is a must read Review Something Deeply Hidden I’m a fan of Sean Carroll I like his podcasts and his appearances on Joe Rogan’s podcast He’s entertaining while still conveying complex knowledge So this review is biased from the start I don’t understand uantum mechanics and for most of my studies I’ve been told I don’t need to understand it because the math works It’s an odd way to approach physics To uote Richard Feynman “I think I can safely say that nobody understands uantum mechanics” Certain physicists like Sean Carroll have decided to change that Something Deeply Hidden largely succeeds for our current best understanding It doesn’t rely on the fact that the math works out; it attempts to explain reality which was physics original purposeThe book reads well; it’s not full of euations though there are some Dr Carroll’s style of explanation is clear enough without euations He’s funny and fills the book with good examples and easy to follow illustrations Dr Carroll lays down a foundation of uantum mechanics history before moving onto cutting edge physics and then to the weird stuff Something Deeply Hidden is an intensely philosophical book that I’m still thinking aboutThe book focuses on Schrödinger’s euation and the Everettian interpretation which is also known as the many worlds interpretation In short Schrödinger’s euation describes the wave function of the universe and there is no collapsing of the euation Instead of superpositions collapsing into a measured reality the measurement causes a branching of the universe Let me repeat that a branching of the universe One where outcome A happens and another where outcome B happens And guess what we branch when the universe does as well The Many Worlds Interpretation Decoherence branching and superposition are difficult concepts to understand Honestly I’m not sure I grasp it fully Dr Carroll does a good job explaining it in a way that I could start to understand This is a book that I will have to reread The idea that the universe branches has long been a popular idea in science fiction see the TV show Sliders But it’s much complex than simply a person’s decision causes the universe to split In fact Dr Carroll deliberately debunks this idea The universe branches but an individual’s decision doesn’t cause the branchingDr Carroll explains the many worlds interpretation in plain terms that at the same time make you scratch your head In Chapter Seven Dr Carroll writes a short story that’s a dialogue between father and daughter physicists In a way it reminded me of What We Talk About When We Talk About Love by Raymond Carver This chapter was unexpected yet effective in conveying difficult topics around probability It was an odd chapter in a physics nonfiction book but it helped convey the information Something Deeply Hidden is well written Part Three Something Deeply Hidden is organized into three parts with a prologue epilogue and appendix I kept up easily with part one; part two stretched the limits of my intellect; and part three simultaneously blew my mind and broke my brain I don’t think I can adeuately review this section without reading it again And I will definitely read it again In my review copy one of the chapters in part three is titled “Breathing in Empty Space” A chapter title like that deserves re reading Multiple Me's One conseuence of branching is that when the universe decoheres and branches so does the person In other words there are many copies of each of us on various branches out in the multiverse Maybe Dr Carroll treats this as no big deal and really after thinking about it for a while it isn’t Since we can’t interact with these other branches contemplating the other me’s that exist is much the same as contemplating how many angels dance on the head of a pin But I never did shake the weirdness of me branching with the universeThis branching has direct conseuences to conservation of energy and the concept of entropy I’m not entirely convinced of the answer provided but it’s an interesting answer This is one of the rare moments in the book where I don’t think the answer conveys a physical meaning Or at the very least one that I can understand If the universe branches enough does that mean it’s possible to lower the energy of the many worlds to almost zero If so what happens to all the me’s in those branches Competing Theories Dr Carroll states plainly that he subscribes to Hugh Everett III’s interpretation of uantum mechanics But he does devote time to competing theories and gives them fair treatment Then he explains why he thinks the alternate interpretations are wrong but in respectful manner Maybe I’ve been reading too much politics lately but this was really refreshing It’s important to see a thoughtful summary of and argument against a competing philosophy without a need to ‘win’ – whatever that means in physics circlesThis section also serves as a starter for investigating about the interpretation of uantum mechanics In this section I learned the phrase uantum Bayesianism which is just fun to say Dr Carroll’s description is uite interesting and I might look into the topic in the future Conclusion Sean Carroll’s Something Deeply Hidden broke my brain in the best way possible This insightful philosophical book explains difficult complex concepts in understandable language Based on the arguments I’m now an Everettian convert Somewhere out in the multiverse there’s an Eric writing a better review of this book In a different branch there’s an Eric who didn’t get to read this book and he’s all the poorer for it9 out of 10