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The Theory of Almost Everything: The Standard Model, the Unsung Triumph of Modern Physics (Anglais) Broché – 26 septembre 2006

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Revue de presse

“This highly accessible volume explains the Standard Model to the everyman, using literary references and easy-to-follow analogies to make clear mind-bending physics principles.” —Publishers Weekly

“Accessible and engaging…This book is for anyone interested in modern physics and ultimate answers about the universe.” —Science News

Présentation de l'éditeur

There are two scientific theories that, taken together, explain the entire universe. The first, which describes the force of gravity, is widely known: Einstein’s General Theory of Relativity. But the theory that explains everything else—the Standard Model of Elementary Particles—is virtually unknown among the general public.

In The Theory of Almost Everything, Robert Oerter shows how what were once thought to be separate forces of nature were combined into a single theory by some of the most brilliant minds of the twentieth century. Rich with accessible analogies and lucid prose, The Theory of Almost Everything celebrates a heretofore unsung achievement in human knowledge—and reveals the sublime structure that underlies the world as we know it.

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There is a theory in physics that explains, at the deepest level, nearly all of the phenomena that rule our daily lives. Lire la première page
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Couverture | Copyright | Table des matières | Extrait | Index | Quatrième de couverture
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Commentaires client les plus utiles sur (beta) 41 commentaires
57 internautes sur 59 ont trouvé ce commentaire utile 
Helped me catch up to the last 30 years of particle physics! 23 décembre 2005
Par Richard Sonnenfeld - Publié sur
Format: Relié Achat vérifié
This book is good for the interested layperson, and even better for a college student who has just had their first year physics or chemistry course and wants to see more about all the hot ideas they've been reading in the newspapers.

I enjoyed this book very much. Here are several things it does better than any other popular book I've read.

It gives you a glimmer of an idea of what "spontaneous symmetry breaking" means, and what it means that all the forces become unified at very high energies. It does it BETTER than other popular works I've seen.

It allows you to understand what the "weak" force is, why it's called that, and what "good" it is. The four fundamental forces are gravity, electromagnetism, the strong force and the weak force. Physics fans generally learn about the first three, but what the weak force is good for ("Who ordered that?" to paraphrase a certain famous physicist) has long been a puzzlement to me. In book after book, I find a single lame sentence that the weak force is involved in certain types of radioactive decay. How useless!! Oerter actually explains what the weak force is.

Many popular accounts of Quantum Electrodynamics (QED) dumb it down to the point where you hear "it is the most accurate theory known to mankind". They never tell you what it is accurate about! Oerter points out that QED allows one to calculate the electron gyromagnetic ratio to 10 decimal places. Gee -- sounds like a good theory!

Finally, Oerter actually at one point writes down the "Grand Unified Equation" (The Lagrangian that includes all 3 fundamental forces -- but not gravity). You may not know what it means, but it sure is nice to see the equation that describes the entire universe. It's got to at least be good for a T-shirt!

Despite the fact that he says he won't talk about superstrings, he does, and he does that well too. (A real feat -- I read Smolin's book on strings -- it blew my mind but didn't really illuminate me.)

I'll admit that I'm a physics professor, so I'm looking for more "beef" in popular books on physics. All physicists tend to know what we teach undergraduates, but in grad school we all go to our separate sub-fields. Since I'm not a particle physicist, I'm almost as ignorant as a layperson about spontaneous symettry breaking, the Higgs field and mass creation, and what EXACTLY the standard model really is. Now I am less so!
50 internautes sur 56 ont trouvé ce commentaire utile 
Over my head 9 septembre 2005
Par Harold A. Christy - Publié sur
Format: Relié Achat vérifié
First of all, I'm not sure how fair my review actually is. I've read the book "A Short History of Almost Everything" and LOVED IT; it was very easy to understand and entertaining. I thought the same would be true with "The Theory of Almost Everything," not so. This book is for individuals who already possess a working knowledge of Physics. It is well written and uses some common everyday analogies but the basic fact remains, if you don't understand general Physics; structure of atoms and molecules, the periodic table or special relativity, you are going to have problems comprehending the material presented in this book. The book is well written and I applaud Mr. Robert Oerter for his efforts. I only wish I had the cognitive ability to take advantage of his work. For those of you who do have a basic understanding of Physics, enjoy!
64 internautes sur 74 ont trouvé ce commentaire utile 
An introduction to the greatest intellectual achievement of the human race 21 juillet 2008
Par Thomas Wikman - Publié sur
Achat vérifié
This review is a little bit long, however, it is more than an assessment of the book, it will also help you prepare for reading the book and explain confusing parts of the book.

Imagine if we had found a two billion year old alien underground civilization under the desert in Arizona several years ago, and you still knew nothing about it, because journalists thought this information was pretty boring stuff and therefore didn't bother telling anyone about it. Well that is most likely not true, but what is true is that the general public has entirely missed the greatest scientific revolution in the history of the human race partially because mainstream media has largely ignored this information, even though the Nobel Prize committee has been raining Nobel Prizes over it.

In the 70's a theory that explained, at the deepest level, nearly all of the phenomena that rule our daily lives came into existence. The theory called "The Standard Model of Elementary Particles" is a set of "Relativistic Quantum Field Theories" that explains how elementary particles behave, which elementary particles there are, and why they have the properties they have, for example, isospin, spin, charge, color charge, flavor, even mass, or mass relations in many cases. The theory explains how all of the fundamental forces in nature work except gravity. The theory describes how the elementary particles interact; decay, how long they are expected to exist, and how they combine into other sub atomic particles. The theory uses only 18 adjustable parameters to accomplish of this.

In the extension the theory thus explains how nucleons and atoms are formed and what properties the atoms will have, and how molecules will form and what properties molecules will have, their chemical reactions, and what elasticity, electric conductivity, heat conductivity, color, hardness, texture, etc. any material will possess. In the extension it explains why mass and matter exist, how the sun and the stars work, and the theory is therefore the ultimate basis of all other science. It also provides a formula, or an equation of almost everything. Best of all it has been thoroughly verified experimentally, in fact the predictions the theory has made has been confirmed with such stunning accuracy and precision that it could be considered the most successful scientific theory ever. A theory that successfully unites all of physics and basically all of human knowledge of the Universe into one single theory has never before existed.

However, "The Standard Model" does not incorporate gravity and the general theory of relativity, and cannot explain dark energy, dark matter and why neutrinos have mass. Therefore as soon as the theory came into existence physicists started looking for the next theory that would finish what the "The Standard Model" did not finish. Example of such theories are GUT theories, SO(5), SO(10), string theories (abandoned), super string theories, and M-theories. Even though those new theories are extremely interesting they have not been verified or able to predict anything. In comparison with the "Standard Model"; super string theories, grand unified theories, chaos theories, you name it, are essentially nothing, but are still better known.

This book explains to the layman what the "Standard Model" is and how it came into existence. The book is by no means a perfect book. I think there are several problems with the book. However, I decided not to take off any star because there are very few books written for science interested non-physicists that explains the "Standard Model of Elementary Particles". Dr. Oerter deserves five stars just for his fairly decent attempt at doing so.

Even though the book is a Physics book, it is also a book on Philosophy. In fact Physics is often the best and the deepest Philosophy, the kind of Philosophy that can be falsified, verified and proven wrong or correct. To understand what I mean consider Noether's theorem. Noether's theorem states that whenever a theory is invariant under a continuous symmetry, there will be a conserved quantity. As an example of what a continuous symmetry is the following; any physical experiment that is performed at a certain time will have the same result if it is performed exactly the same way a certain time later. That seemingly self evident observation means that Energy is conserved. Another example is, any physical experiment that is performed at a certain place will have the same result if it is performed exactly the same way somewhere else. That seemingly self evident observation means that momentum is conserved.

Let me add that "exactly the same way" really means that! Gravity, other forces, differences in light, or anything else cannot be different in the second experiment. The only thing allowed to be different is the position "x" (if that is our symmetry variable). That is what a continuous symmetry means, changing just one thing, and everything stays the same.

Noether's theorem has been the guiding principle behind the standard model and it is used to find conservation laws where symmetries are found, and it is used to find symmetries where conservation laws are found. It is a spontaneous symmetry brake that allows the Higgs Boson to give all other particles their mass (excepting mass less particles). This is why matter and everything in our Universe exist. The Higgs Boson is also called the God particle (guess why). So Noether's theorem is both very useful in a practical sense and deeply philosophical at the same time.

The God particle has not yet been found, but scientists will be looking for it using the new Large Hadron Collider (LHC) that will come on line this fall (fall of 2008). LHC will start operating in August and the first collisions are planned for October. It is the largest machine ever built and it has a circumference of 17 miles. However, a law suit has been filed in attempt to stop the LHC from operating. Some people believe that the LHC will create small black holes that could suck up all of earth. In essence, they believe that our attempt to find the God particle will be the end of the world.

In addition to Noether's theorem the standard model is built upon the special theory of relativity and a modern formulation of quantum mechanics (Quantum field theory), QED, QCD, as well as some discoveries regarding elementary particles. I can add that Noether's theorem was formulated by a Jewish woman, Emmily Noether, who could not get a job in academia because she was a woman. This theorem is one of those very important but mostly unknown discoveries, like the invention of paper by the Chinese Tsai Lun.

Oerter does not attempt to explain the special theory of relativity; however, he tries to give the reader an idea of what it is. The problem with his approach is that he gives the reader just enough information to enable the observant reader to come up with the apparent paradoxes within the special theory of relativity, but not enough information to help the reader to easily resolve them.

He also confuses the reader by not distinguishing between rest mass and relativistic mass. The observant reader will think that he is contradicting himself. The term relativistic mass is the total mass and the total quantity of energy in a body. The rest mass is the mass of a body when it is not moving. The formula E = mc² is always true, when it refers to relativistic mass, which is why we talk about an energy/mass equivalence. The other more complex formula Oerter presents refers to rest mass. There is no such thing as an energy/rest mass equivalence (except at speed 0) but that is what the reader who is not already familiar with the subject will end up believing.

Another mistake Oerter does is in regards to the fact that the speed of clocks will be measured differently in different reference frames. On page 35 last paragraph Oerter writes "Here, we have an apparent paradox: If each reference frame sees the other as slowed down, whose clock will be ahead when the passengers leave the train?" Then he implies that the paradox has to be solved by incorporating the General theory of relativity. Even though that may be how it was first solved, you can solve this form of the so called "Twin Paradox" and other similar paradoxes from within the framework of the special theory of relativity itself.

Oerter explains Quantum Physics in a very typical manner but he mostly avoids making it look much weirder than it actually is which he should be commended for. However, there is one thing that all Physicists seem to do when they explain Quantum Physics to the layman which annoys me greatly. The matter waves (or quantum fields) in Quantum Physics are quite strange entities. The reason they are so strange is because they do not exist in a real sense, they are more correctly stated mathematical abstractions. Oerter states this clearly, which is good. However, he then goes on to mention De Witts idea about multiple Universes without acknowledging that these "bizarre solutions" to Quantum Wave conundrums are completely unnecessary and worthless. There is no more reason to believe in multiple Universes based on matter waves then there is to believe in multiple Universes because we all have different reference frames.

In fact when I took my first class in Quantum Physics (as an engineering physics student) I successfully proved, using a combination of the Schrödinger equation and plain Galileo transformations, that the matter waves are not only "not real" they don't even represent information in an objective sense, in fact every reference frame had its own matter wave for the same particle. Our own single Universe is thus already all the Universes you need all at once. My associate professor was just scratching his head but the leading Swedish authority on Quantum Physics at the time, Staffan Yngwe, immediately agreed with me. So in summary there is no need to make Quantum waves weirder than they are or draw unwarranted conclusions from apparent conundrums. Just take them for what they are; one possible mathematical model (among many) of a particle as seen from your frame of reference only.

After giving a background to the special theory of relativity and Quantum Physics Oerter continues explaining relativistic Quantum Physics including the fantastic prediction you get when you combine the special theory of relativity with Quantum Physics; that for every particle there is a twin particle with exactly the same mass, and spin, but opposite charge and isospin. These particles were called anti-particles and until they were actually found physicists tried to get rid of them from the theory. However, the combination of the special theory of relativity and Quantum Physics would lead not only to much better explanation for such things as the radiation and light spectrum and the properties of atoms, it would also lead to new discoveries.

Richard Feyman came up with a new representation of relativistic quantum physics for electrons that did not use waves called Quantum Electro Dynamics, and this was one of the first steps towards the standard model. Physicists started discovering a lot of unexpected particles which remained unexplained for decades (until the standard model came about), QCD was invented, the Higgs Boson (the God particle), symmetry breaks, etc. The story is simply breath taking and Oerter does a good job telling this story, except I think he should have used more and better pictures. However, as I said I cannot honestly take any stars off for these minor flaws. Finally Oerter discusses possible modifications to the standard model, GUT's, string theory (abandoned), super string theories, and M-theories.

I also would like to add an interesting fact that I think everyone should be aware of. There are elementary particles with whole number spin and they are called Boson's, and there are elementary particles with half number spin called Fermions. The Pauli Exclusion Principle (that no two particles can occupy the same state) applies to Fermions but not Bosons and therefore the two different types of particles behave very differently and follow different kinds of statistical rules (Bose-Einstein statistics versus Fermi-Dirac statistics). All force carriers are Boson's while some Fermions are used to build "nomral matter". Examples of Bosons are the photon, gluons, W and Z Boson, mesons, the Higgs Boson (the God particle). The Fermions come in three families each with four particles and their anti particle.

Electron / positron
Neutrino / anti-neutrino
Up quark / anti up quark
Down quark / anti down quark

muon / anti-muon
Mu Neutrino / anti-mu-neutrino
Charm quark / anti charm quark
Strange quark / anti strange quark

tau / anti-tau
Tau Neutrino / anti-tau-neutrino
Top quark / anti top quark
Bottom quark / anti bottom quark

The quarks can be used to build other particles. For example, a quark and anti-quark pair is called a meson (there are many kinds of mesons). A triplet of quarks is called a Baryon. An example of a baryon is the proton which consists of two up quarks and one down quark. Another example is the neutron which consists of one up quark and two down quarks.

I highly recommend this book for anyone who wants to understand something about our world and the Universe. However, don't expect to understand everything, it is not written so that you can. I wish Physicists would become a little better at explaining these things to the layman using nice descriptive pictures and a little bit of math too (don't assume math is always bad). I once read a 30 page long Swedish book on the special theory of relativity that successfully explained the kinematics, dynamics, and magnetism in relativity, to your average high school kid. The Lorenz transforms, formulas for acceleration, E = mc², and magnetism were derived using simple algebra and a tiny bit of calculus at one point. That is the way these kinds of books should be written, but I have seen this only once in my life. Excluding this single example (Swedish book), Oerter's book is one of the best books on Physics for the layman that I have ever read.

Finally I would like to state a question for discussion. Will you and our planet survive this coming fall considering that the LHC is coming on line?
17 internautes sur 19 ont trouvé ce commentaire utile 
thrilling! 28 septembre 2006
Par nerdyguy1618 - Publié sur
Format: Relié Achat vérifié
I'm a physicist, but not a particle physicist. I like reading books written for the layperson. I can broaden my knowledge a bit, and for topics I know well I can enjoy reading how someone else explains these topics. It's always helpful to have a background in physics when reading these kinds of books, but I think this book would read well for any curious reader.

It seemed like a fascinating mystery novel to me. Even though I knew what the book was building up to (the Standard Model), I was excited to see how the plot unfolded. The writing is very smooth and comfortable. I had a hard time putting it down. I brought it to the beach with me.

I recommend reading it twice. If you read it carefully the first time and are still confused, then a second read might straighten much of that out. You may find that some topics are still confusing. With this subject, you can't expect miracles!

I'm glad the author mentioned string theory. Some particle physicists are so defensive about the Standard Model that they wouldn't mention string theory. For further study on string theory, read Elegant Universe by Brian Greene.

Overall, a great book! Well written, and fun to read.
20 internautes sur 23 ont trouvé ce commentaire utile 
useful, but uneven 8 janvier 2007
Par Gyre Andrew Gimble - Publié sur
The early chapters of the book are so condescending that I nearly put the book down. The author's needlessly lowbrow examples include soccer moms, ants on rollerblades, and pandering digs at Republicans. Corny humor abounds-- high school computer nerd humor. It really gets annoying, so be forewarned.

But if you stick it out until the middle chapters, the book starts showing a bit more respect for the reader (though the corny humor continually remerges every 10 pages or so). After beginning too simply, the book almost becomes too dense and difficult by the end, but there's a nice middle ground about halfway through where everything starts to come together.

In intellectual terms, what I like best about this book is that it does teach the reader many things that are not to be found in other popular physics books. What I like least, other than the condescending jokes and politically correct grandstanding, is the lack of any sense of drama in the book. The author states from the start that he is giving a systematic overview of the standard model, not a history. But oftentimes it's difficult to give the former without a good dose of the latter (see the brilliant and ultra-dramatic history of nuclear physics in the first several hundred pages of Richard Rhodes, *The Making of the Atomic Bomb*. I wish Rhodes had written a history of the standard model.)

I'd recommend browsing this book in a library, since it's a good quick read but not one that you're likely to consult multiple times. I already feel kind of dumb for buying it so trustingly. But in all fairness, you'll learn something here. Just be ready to hold your nose now and then.
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