tag:blogger.com,1999:blog-22973357.post4144371330971023679..comments2023-09-27T07:44:19.769-04:00Comments on Sabine Hossenfelder: Backreaction: Quantum Supremacy: What is it and what does it mean?Sabine Hossenfelderhttp://www.blogger.com/profile/06151209308084588985noreply@blogger.comBlogger62125tag:blogger.com,1999:blog-22973357.post-30938135730357811292021-01-04T05:35:25.211-05:002021-01-04T05:35:25.211-05:00That's an interesting question, but I am afrai...That's an interesting question, but I am afraid the answer is model dependent. In my model it won't. Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-86354264915536654842021-01-04T05:15:54.233-05:002021-01-04T05:15:54.233-05:00If super determinism pans out will it affect quant...If super determinism pans out will it affect quantum computing? Jakob Virgilhttps://www.blogger.com/profile/09508538609077333325noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-81696022763079228462019-08-26T13:27:05.246-04:002019-08-26T13:27:05.246-04:00Hello, Sabine et al!
1. I'm not a physicist
2...Hello, Sabine et al!<br /><br />1. I'm not a physicist<br />2. I just have a question: why do some scientists...<br /><br /> ( Max Tegmark was one such back in 2014<br />https://youtu.be/bJpIclDmi2M @ 11:00)<br /><br />...think the fate of q-computing will either prove or disprove the existence of parallel multiverses? <br /><br />if you don't answer i will call into Dr Kaku's radio Kneeling Catholichttps://www.blogger.com/profile/16797815971446807261noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-17131099780162168932019-07-04T18:21:07.660-04:002019-07-04T18:21:07.660-04:00We do need to understand how computers work becaus...We <i>do</i> need to understand how computers work because some idiots are claiming that, and warning the world that, consciousness can “emerge” from such things.<br /><br />Computers work on 2 levels:<br />1. Just like everything else (cars, living things, atomic bomb explosions), computers process fundamental-level information like mass, charge and position, and their associated numbers. We Lorraine Fordhttps://www.blogger.com/profile/00175567853773691970noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-9343744163259774842019-07-04T04:58:30.266-04:002019-07-04T04:58:30.266-04:00Hi SABINE, !!!
and Friends.
I hope eve... Hi SABINE, !!!<br /> and Friends.<br /><br /> I hope everyone's day is<br /> going well.<br /><br /> I'm not at liberty to<br /> speak much in detail.<br /> However, perhaps I can<br /> (indirectly) state a<br /> 'well known' fact .<br /> - The actual level<br /> of technological advancement<br /> extant on this planet..<br />A.C.https://www.blogger.com/profile/08901144737333895284noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-39523640592496364442019-07-03T06:58:21.729-04:002019-07-03T06:58:21.729-04:00Oh, what the heck:
The TRACI Hypothesis
TRACI = T...Oh, what the heck:<br />The TRACI Hypothesis<br /><br />TRACI = Time Reversals Are Computationally Inaccessible<br /><br />I don't think our understanding of the interactions between information-rich classical physics and quantum entanglement is sufficiently precise yet. More specifically, in situations where special relativity allows some frames to interpret "instantaneous" Terry Bollingerhttps://www.blogger.com/profile/03915136249111338024noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-84046246720037978152019-07-03T02:49:10.512-04:002019-07-03T02:49:10.512-04:00Dr. Castaldo: Actually I have been coding the last...Dr. Castaldo: Actually I have been coding the last few weeks. In about a year I will learn if my efforts will generate cash flow.Walter Eslerhttps://www.blogger.com/profile/18109521016382896687noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-61552904770587736152019-07-02T17:55:35.278-04:002019-07-02T17:55:35.278-04:00Thanks for the explanation of quantum computing; I...Thanks for the explanation of quantum computing; I'd had a sort of a handle on it but not, it seems, as fully as I had thought.<br /><br />And not on topic, but I really liked your words to students in response to the young man who took his life. Instructors can communicate knowledge in a field or information, but my view is that teachers know they have a greater responsibility as human Friarhttps://www.blogger.com/profile/16907204457371629428noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-67621530999671123672019-07-02T13:05:04.298-04:002019-07-02T13:05:04.298-04:00Maybe the problem is that it is just insanely diff...Maybe the problem is that it is just insanely difficult? As Sabine said, we have no indication that the theories you are talking about are wrong. There's just so many things to take into consideration.<br /><br />For nuclear fusion for example, you are talking about the equations of magnetohydrodynamics. These are highly nonlinear. With small changes you could get from one flow regime to SpearheadBThttps://www.blogger.com/profile/00542670324878174458noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-52971741332466863272019-07-02T12:20:04.139-04:002019-07-02T12:20:04.139-04:00Inertial confinement is as sort of laser induced h...Inertial confinement is as sort of laser induced hydrogen bomb. This works because the confinement is very transient. The big issue from what I understand is that to make this work the DT pellets have to be quite large and the burst of fusion energy released is rather powerful. So this has scaling issues. <br /><br />Tokamaks and magnetic mirror systems are intended to be less transient, but Lawrence Crowellhttps://www.blogger.com/profile/12090839464038445335noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-49884837152410909892019-07-02T11:57:08.726-04:002019-07-02T11:57:08.726-04:00@Dr. A.M. Castaldo,
Well, for hydrogem bombs they ...@Dr. A.M. Castaldo,<br />Well, for hydrogem bombs they didn't really solve these problems. That is because they don't actually need to solve them. There is no need for confinement, on the contrary. You want a short burst of immense energy for maximal damage. So what you want to achieve with H bombs, is to release as much energy as possible in one event, which is relatively "easy"SpearheadBThttps://www.blogger.com/profile/00542670324878174458noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-87936797715985308142019-07-02T11:51:31.003-04:002019-07-02T11:51:31.003-04:00This comment has been removed by the author.SpearheadBThttps://www.blogger.com/profile/00542670324878174458noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-86584631444131512712019-07-02T11:32:51.263-04:002019-07-02T11:32:51.263-04:00I think we'll get a few hundred to a few thous...I think we'll get a few hundred to a few thousand physical qubits in the next 10 years. Millions of qubits might (or might not) run into really difficult engineering problems. We certainly don't know how to solve them right now, so if you're a pessimist you can say "never". But if you're an optimist you can say "15 to 20 years". Peter Shorhttps://www.blogger.com/profile/13823970640202949073noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-54665379483557916502019-07-02T09:34:37.389-04:002019-07-02T09:34:37.389-04:00Lawrence Crowell: That is an interesting argument,...Lawrence Crowell: That is an interesting argument, I have not heard it before. I suppose, then, in a fusion "thermonuclear" Hydrogen bomb, they have solved these problems. Perhaps the way forward for fusion energy is in scaling that technology <i>down</i> from a hydrogen bomb to some kind of miniature hydrogen bombs; and developing some way to capture the energy produced by the Dr. A.M. Castaldohttps://www.blogger.com/profile/17988116835722393503noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-84319804651150595562019-07-02T08:02:00.070-04:002019-07-02T08:02:00.070-04:00@Walter Esler: You haven't been answering the ...@Walter Esler: <i>You haven't been answering the service calls!</i><br /><br />Right, because that is not my job. I invent algorithms and new ways of solving problems. I notice you haven't been doing your fair share of inventing new algorithms, Walter. What's the problem?<br /><br />Walter: <i>There are some very basic ideas which would be helpful,</i><br /><br />Helpful to whom? To Dr. A.M. Castaldohttps://www.blogger.com/profile/17988116835722393503noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-13517774853381988452019-07-02T07:52:24.215-04:002019-07-02T07:52:24.215-04:00It is a bit strange this issue has turned into one...It is a bit strange this issue has turned into one about fusion. The big problem with fusion technology I think stems from the source of confinement. A star confines a plasma by gravitation, where in effect the confining force is “from within.” We can also interpret the “force” as really due to the thermal pressure in the plasma that resists the geodesic flow of gravitation. Our approach to Lawrence Crowellhttps://www.blogger.com/profile/12090839464038445335noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-90689390566667633232019-07-02T05:50:34.805-04:002019-07-02T05:50:34.805-04:00Nuclear fusion works, and the way it works is perf...Nuclear fusion works, and the way it works is perfectly compatible with the theoretical expectation. The problem is that the technology is does not have a positive energy output. <br /><br />A much bigger problem than "supremacism" in science is people who go around and make big proclamations about things they evidently do not understand. Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-55912771297162271022019-07-02T05:37:16.266-04:002019-07-02T05:37:16.266-04:00In my opinion, the reason why quantum computing an...In my opinion, the reason why quantum computing and nuclear fusion are forever promising but never quite work is that there is an arrogant supremacism in science. There are incorrect theoretical models that science thinks they are absolutely correct. We are missing something, we still do not know accurately how nature works, but we believe we do. False modesty and supremacism are not good tools Albert Zotkinhttps://www.blogger.com/profile/02745604087015640780noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-35849297594931905912019-07-02T01:22:34.926-04:002019-07-02T01:22:34.926-04:00Hi SABINE, !!!
- and friends.
I hope everyone&#... Hi SABINE, !!!<br /><br />- and friends.<br /><br /> I hope everyone's day is going well.<br /> For myself, personally,<br /> I just finished reading a <br />critique of Steven Hawking's<br /> last paper.<br /> It was done very well.<br /> It was done by a very adept<br /> Scientist/physicist/mathmetician<br /><br /> ... he ripped it apart.<br /> - and upon my review,<br /A.C.https://www.blogger.com/profile/08901144737333895284noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-15138076102652317072019-07-02T00:33:45.223-04:002019-07-02T00:33:45.223-04:00Fulis,
I am familiar with these papers. As I said...Fulis,<br /><br />I am familiar with these papers. As I said, these are useful/interesting for scientists (or more generally maybe for people who are academically curious). Also note that this is a topic I have written about many times and that I do as a matter of fact work on myself. What I am saying is that these simulation have no practical use. In case that still wasn't clear enough: Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-11317276775875487362019-07-01T16:02:48.052-04:002019-07-01T16:02:48.052-04:00Well, look for example at this review: https://doi...Well, look for example at this review: https://doi.org/10.1038/nphys2259 or this article: https://doi.org/10.1038/nature23022<br /><br />As for the number of qubits / atoms / spins, the number I picked is arbitrary, but the point is that when we get beyond the regime of what's classically tractable in terms of simulating say the Fermi-Hubbard model, we can learn a lot about these systems.fulishttps://www.blogger.com/profile/17357991149861003460noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-38892014550251661382019-07-01T14:17:38.076-04:002019-07-01T14:17:38.076-04:00As Donald Rumsfeld might say: You compute with the...As Donald Rumsfeld might say: You compute with the computers you have, not with the [theoretical] computers you don't have.<br /><br />And don't forget about biocomputers (made of biological materials).<br />Philip Thrifthttps://www.blogger.com/profile/03021615111948806998noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-32058553255200205812019-07-01T13:03:40.438-04:002019-07-01T13:03:40.438-04:00Dr. Castaldo, RGT:
You haven't been answering...Dr. Castaldo, RGT:<br /><br />You haven't been answering the service calls! "I keep getting a warning on my computer." What does it say? "You're supposed to know that." <br /><br />"My E-mails disappeared!"<br /><br />"All my edits disappeared!"<br /><br />There are some very basic ideas which would be helpful, if more widely disseminated. What a Walter Eslerhttps://www.blogger.com/profile/18109521016382896687noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-10296948061444540372019-07-01T06:27:03.235-04:002019-07-01T06:27:03.235-04:00Please provide a reference for that claim.Please provide a reference for that claim.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-46386158057543175432019-07-01T05:23:55.837-04:002019-07-01T05:23:55.837-04:00Peter Shor:
Sounds as if you think it can really ...Peter Shor:<br /><br />Sounds as if you think it can really work, and you <i>are</i> an actual expert in the field. What is your gut feeling for the timescale by which a system such as you describe will really be built?<br /><br />Thanks.<br /><br />DavePhysicistDavehttps://www.blogger.com/profile/11111405959451703182noreply@blogger.com