tag:blogger.com,1999:blog-22973357.post2578933802296126311..comments2020-10-29T13:20:47.362-04:00Comments on Sabine Hossenfelder: Backreaction: David Bohm’s Pilot Wave Interpretation of Quantum MechanicsSabine Hossenfelderhttp://www.blogger.com/profile/06151209308084588985noreply@blogger.comBlogger50125tag:blogger.com,1999:blog-22973357.post-64932888896509128452020-10-28T06:13:37.880-04:002020-10-28T06:13:37.880-04:00Gerd Termathe: I get the impression you have misse...Gerd Termathe: I get the impression you have missed the whole point of the "Lost In Math" title. <br /><br />The issue isn't that ANY of the math is difficult.<br /><br />The issue is that physicists are seeking "beauty" in their math and trying to drive the science by aesthetic considerations that have no scientific justification. <br /><br />Then you show you too are &Dr. A.M. Castaldohttps://www.blogger.com/profile/17988116835722393503noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-10956928956045654362020-10-27T09:04:12.111-04:002020-10-27T09:04:12.111-04:00Lost in math? Problems like that can be easily sol...Lost in math? Problems like that can be easily solved using Euler's complex e-function, where you can arbitrarily mix Cartesian coordinates with cylindrical coordinates (see my last post in Quantum mechanics #5). If you define t=0 as the time when be bullets are fired, you can immediately write down the position of the bullets as<br />b(t)=R + ivt + cte^(iφ) for all angles φ, where one angle Gerd Termathehttps://www.blogger.com/profile/01718262823488014650noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-29915023439457756342020-10-26T21:07:20.979-04:002020-10-26T21:07:20.979-04:00Nonlin.org:
"Isn't Bohm claiming that qua...Nonlin.org:<br />"Isn't Bohm claiming that quantum mechanics is more or less same as Newtonian mechanics? Is so, why does the water wave analogy fail? If not, what's different?"<br /><br />Water waves require a medium which would correspond to the disproved luminiferous aether.<br />For Newtonian mechanics/quantum mechanics rather think of a mobile gun (speed v) driving on a Gerd Termathehttps://www.blogger.com/profile/01718262823488014650noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-66880814797143251262020-10-24T05:27:28.451-04:002020-10-24T05:27:28.451-04:00Nonlin.org wrote: "What if instead our notion...Nonlin.org wrote: "What if instead our notions of 'wave' and 'particle' are fundamentally wrong?"<br /><br />Right. We haven't arrived at a clear picture of what "quantum objects" are. De Broglie's beautiful idea that they have both wave and particle properties has not really come to fruition in Bohmian mechanics. What I especially dislike about the Wernerhttps://www.blogger.com/profile/08502954437062856468noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-23394401758416246202020-10-23T13:18:03.995-04:002020-10-23T13:18:03.995-04:00How would particles be "guided by a field whi...How would particles be "guided by a field which in return depends on the particle"? And how could someone go about proving Bohm's interpretation?<br /><br />Isn't Bohm claiming that quantum mechanics is more or less same as Newtonian mechanics? Is so, why does the water wave analogy fail? If not, what's different?<br /><br />What if instead our notions of 'wave' and Nonlin.orghttps://www.blogger.com/profile/15149807667681107150noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-5192741833547826862020-10-23T10:52:05.771-04:002020-10-23T10:52:05.771-04:00Dear Ajit,
Non linearity of Bohmian mechanics is r...Dear Ajit,<br />Non linearity of Bohmian mechanics is rather well known. Just google! e.g.<br /><br /><br />Bohmian Mechanics (Stanford Encyclopedia of Philosophy)<br />plato.stanford.edu › entries › qm-bohm<br />Oct 26, 2001 — David Bohm (1952) rediscovered de Broglie's pilot-wave theory in 1952. Thus our deterministic Bohmian model yields the usual quantum predictions for the ... equation kashyap vasavadahttps://www.blogger.com/profile/10732897306667764590noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-10335850494005435452020-10-23T08:39:10.809-04:002020-10-23T08:39:10.809-04:00Heisenberg's Uncertainty Principle says that w...Heisenberg's Uncertainty Principle says that we cannot determine the exact position of the particle. But in Bohmian mechanics, the particle actually has an exact position which it is not possible to determine, and the fact you can't determine it is the source of the probabilities inherent in quantum mechanics.Peter Shorhttps://www.blogger.com/profile/13823970640202949073noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-32758922981494521232020-10-22T08:56:05.141-04:002020-10-22T08:56:05.141-04:00One question about this sentence:
"Bohmian me...One question about this sentence:<br />"Bohmian mechanics says that the reason we can only make probabilistic predictions in quantum mechanics is just that we did not exactly know where the particle initially was."<br /><br />Is this "exactly" here still subject to the indetermination principle? In other words, was Bohm assuming that also the indetermination threshold could becallmeishmaelhttps://www.blogger.com/profile/16120292054853679956noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-13621005447882863402020-10-22T05:38:03.613-04:002020-10-22T05:38:03.613-04:00This is a great future topic. I thought about comm...This is a great future topic. I thought about commenting on this here, but work, time limits and so forth have gotten in the way. It is the standard narrative that quantum nonlocality and field locality are completely independent. There are though I think subtle connections and QM and QFT nonlocality and locality have a connection. For most QFT and particle physics work it is just not important. Lawrence Crowellhttps://www.blogger.com/profile/12090839464038445335noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-50813033824701105752020-10-21T22:42:52.006-04:002020-10-21T22:42:52.006-04:00Thank you Dr.Sabine,
I was one of the requesters o...Thank you Dr.Sabine,<br />I was one of the requesters of this topic.Pubbli Webbhttps://www.blogger.com/profile/12908734155063692762noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-19358260478554910342020-10-21T13:58:03.890-04:002020-10-21T13:58:03.890-04:00Dear Kashyap,
I seem to have missed the nonlinear...Dear Kashyap,<br /><br />I seem to have missed the nonlinearity you talk about. Where do you find a nonlinearity in the maths for the Bohmian mechanics?<br /><br />Sabine has not used the word nonlinear (or non linear) or chaos, etc. Note her summary:<br /><br />>> "Let me just say you take the wave-function apart into an absolute value and a phase, insert it into the Schrödinger Ajit R. Jadhavhttps://www.blogger.com/profile/02194541129055576042noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-7811298289818002812020-10-21T12:43:54.018-04:002020-10-21T12:43:54.018-04:00@opamanfred:
“Science could not exist without fait...@opamanfred:<br />“Science could not exist without faith! Science needs faith that with it we can find truth, and that this truth is worth finding” commented Guy Consolmagno, Director of the Vatican Observatory, on the award of the Nobel Prize in Physics 2020 (vaticannews).<br /><br />Fact is that science needs no faith at all.<br /><br />If you now think of conspiracy theories ("Dan Brown&Gerd Termathehttps://www.blogger.com/profile/01718262823488014650noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-50056198829021019112020-10-21T12:00:26.796-04:002020-10-21T12:00:26.796-04:00so Bohmian mechanics is like what you do to Maxwel...so Bohmian mechanics is like what you do to Maxwell's equations when you derive the physical optics formulation (before you start applying approximations to it) ?bizdietz!tovarishhttps://www.blogger.com/profile/08162824088805624919noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-79718993861715989202020-10-21T08:08:42.115-04:002020-10-21T08:08:42.115-04:00The Theory of Everything needs a Multiverse ! even...The Theory of Everything needs a Multiverse ! even Bohm single photon dual slit experiment.<br />We humans, even photons are entangled reflections in the mirror multiverse.! <br />The Base for the Ultimate Theory of Everything (TOE) is the entangled multiverse:<br />1: Cramer's TI is the same as CP ( Charge Parity) symmetric Multiverse entanglement. (clocks are running only backwards over Leo Vuykhttps://www.blogger.com/profile/16285797359437018414noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-18619846786634427322020-10-21T03:24:58.508-04:002020-10-21T03:24:58.508-04:00@Gerd: you should suggest this to Dan Brown for th...@Gerd: you should suggest this to Dan Brown for the plot of his next novel ;) Maybe you can even get some royalties.opamanfredhttps://www.blogger.com/profile/07148586222290109507noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-85501616064858226562020-10-20T11:51:56.037-04:002020-10-20T11:51:56.037-04:00We humans are our own entangled reflections from f...We humans are our own entangled reflections from far away, in the mirror symmetric Multiverse. The Base for the Ultimate Theory of Everything (TOE) is the reflective entangled multiverse supported by: John Cramer's TI is the same as CP (Charge Parity) symmetric multiverse entanglement. Leo Vuykhttps://www.blogger.com/profile/16285797359437018414noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-18796792103084955532020-10-20T10:55:04.300-04:002020-10-20T10:55:04.300-04:00I have a friend who, on seeing the above, promptly...I have a friend who, on seeing the above, promptly said "how is algkoopman not a physical fairy tale for children peter !!", so please consider that particular entry half-removed from the list above. He's going through the rest on Messenger as I write this now, so AlgKoopman is well roasted.Peterhttps://www.blogger.com/profile/08654675777726560464noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-79451661393371528312020-10-20T08:55:54.630-04:002020-10-20T08:55:54.630-04:00As far as I can tell, Bohr never actually said &qu...As far as I can tell, Bohr never actually said "don't ask questions". What he said was more like that “there can be no question of any unambiguous interpretation of the symbols of quantum mechanics other than that embodied in the well-known rules which allow to predict the results to be obtained by a given experimental arrangement.” Peter Shorhttps://www.blogger.com/profile/13823970640202949073noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-7287152009426084692020-10-20T04:08:23.493-04:002020-10-20T04:08:23.493-04:00Hmm, I think it’s more standard to talk of the wav...Hmm, I think it’s more standard to talk of the wave function as a “calculational tool” or “the state, from which we can calculate probabilities.”<br /><br />Anyway, I didn’t mean to reproach. Given your interest in foundational issues (such as your Superdeterminism paper, which I liked), I just thought you’d phrase it differently, is all.<br /><br />I do have a video channel, but think I cannot Ojvindhttps://www.blogger.com/profile/03435220735815599121noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-90535018430128473882020-10-20T00:20:11.030-04:002020-10-20T00:20:11.030-04:00That's the way to go. For the entanglement it ...That's the way to go. For the entanglement it seems to be nececcary to find out also external structure, not only internal - how internal and external together conserves antipodes over spatiality. Temporal variation is ruled by speed constant c.<br /><br />Of course the next conclusion is related to the definitions of naming selectable things: parity; where come left and right, how are ruled Eusahttps://www.blogger.com/profile/14114706429392111062noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-37130719686359517032020-10-19T16:09:59.908-04:002020-10-19T16:09:59.908-04:00Sabine:
"Bohm had pretty much the whole commu...Sabine:<br />"Bohm had pretty much the whole community against him. ... And in the end, they just ignored him."<br /><br />Max Planck, Werner Heisenberg, Niels Bohr, Louis de Broglie, Paul Dirac, and Erwin Schrödinger were all members of the Pontifical Academy of Sciences, the scientific academy of the Vatican City. Latest member is physics Nobel prize winner Reinhard Genzel for his Gerd Termathehttps://www.blogger.com/profile/01718262823488014650noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-56377991141320952322020-10-19T11:08:02.130-04:002020-10-19T11:08:02.130-04:00Originally the idea of a pilot wave was raised by ...Originally the idea of a pilot wave was raised by de Broglie. It was discussed and refuted at the Solveig conference in 1927. John Bell has investigated that discussion and says (in his book “Speakable and Unspeakable in QM”) that this decision was not the result of physical arguments but the result of the personality of Heisenberg; who used the occasion to slam de Broglie.<br /> <br />It is antooneohttps://www.blogger.com/profile/12559038212417783694noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-4848652333324906962020-10-19T10:36:22.944-04:002020-10-19T10:36:22.944-04:00One thing I found interesting reading your article...One thing I found interesting reading your article about Bohmian mechanics is a connection I noticed to what another physicist said regarding point particles (unfortunately I can't remember where I read it or who said it). He wrote that he regarded point particles as "a disturbance in the field" rather than being continual existing points of energy. That seemed to fit nicely with Louis Tagliaferrohttps://www.blogger.com/profile/16698865662162457632noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-21583451420873482322020-10-19T08:40:28.681-04:002020-10-19T08:40:28.681-04:00Phase -
What if the particle actually always IS ...Phase - <br /><br />What if the particle actually always IS there, but, either, it's polarity fluctuates, making the equipment either not attuned or not able to measure it ; or it is 'out of phase' and simply not observable without learning how to calibrate instruments to detect wave functions in different phases?(In Sci-Fi, 'phase shifting', lol. But, obviously, there are BlackOpalhttps://www.blogger.com/profile/17013373047327514100noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1174387905703945902020-10-19T07:45:23.710-04:002020-10-19T07:45:23.710-04:00Nonlocality is monism.Nonlocality is monism.bergenhovmatshttps://www.blogger.com/profile/00904765618976336878noreply@blogger.com