tag:blogger.com,1999:blog-22973357.post4408934284827210370..comments2023-09-27T07:44:19.769-04:00Comments on Sabine Hossenfelder: Backreaction: What are you, really?Sabine Hossenfelderhttp://www.blogger.com/profile/06151209308084588985noreply@blogger.comBlogger73125tag:blogger.com,1999:blog-22973357.post-73043217538467391302012-10-06T10:29:03.385-04:002012-10-06T10:29:03.385-04:00“I think that mathematics being fundamental to rea...“I think that mathematics being fundamental to reality is virtually beyond dispute.”<br /><br />“If humans didn't exist, the fundamental relationships that mathematics reveals would obviously still be real.”<br /><br />Perhaps it is my flat-footed lack of imagination, but the notion that mathematics is primal seems akin to putting the cart before the horse. More formally, it is an example of Don Fosterhttps://www.blogger.com/profile/04814669413022486958noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-6402271670895966172012-10-01T21:06:42.729-04:002012-10-01T21:06:42.729-04:00Hi Pete,
As a supporter of the mathematic...Hi Pete,<br /><br /> As a supporter of the mathematical universe hypothesis, is it possible to look at my theory a bit in more detail and give me your opinion. I cannot give you a direct link since Bee is against that but I will give you my email in case you are interested. Thanks.<br /><br />my email <br /><br />is sadeq.adel985@gmail.comqsahttps://www.blogger.com/profile/08193989424656595346noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-61950635078368397002012-09-30T20:51:00.269-04:002012-09-30T20:51:00.269-04:00I think that mathematics being fundamental to real...I think that mathematics being fundamental to reality is virtually beyond dispute. There are countless examples of pure mathematical discoveries being linked to reality decades or centuries later. In a recent post on this blog, the article mentions the aharonov-bohm effect, which seems to show that potential fields (seemingly mathematical constructions) are in some essence real. And those that petehttps://www.blogger.com/profile/12969621709127674152noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-62271592716418936452012-09-21T12:11:33.290-04:002012-09-21T12:11:33.290-04:00Eric,
you may be right, it is a matter of bias. B...Eric,<br /><br />you may be right, it is a matter of bias. But being a trained mathematician and physicist does it then make sense to discuss this matter at all with me ? Yes I do believe that mathematics is crucial in understanding the world, and I would like to give you some great quotes that stress this, but unfortunately they are by people in the field (you see I am biased) and so, would you Joelhttps://www.blogger.com/profile/08454286410340247397noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-64476713441622590302012-09-21T01:51:51.259-04:002012-09-21T01:51:51.259-04:00Qsa, Eric,
thanks for your explicit responses. I h...Qsa, Eric,<br />thanks for your explicit responses. I have to think about what you are saying but am currently just lacking time. Hope to come back to this blog soon.<br /><br />Best<br />Joelhttps://www.blogger.com/profile/08454286410340247397noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-31246087761020160872012-09-20T18:07:30.577-04:002012-09-20T18:07:30.577-04:00Hi Joel,
Getting back to your thesis about not bei...Hi Joel,<br />Getting back to your thesis about not being able to depend on intuition for QFT. You are hiding an assumption that you haven't recognized. You are assuming everyone's intuition is equal. This was the hidden assumption that Feynman overlooked. He was a mathematically oriented physicist and was biased to the toolkit he had in his possession, mathematics. Many others that are Erichttps://www.blogger.com/profile/08213251864943443334noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-15306251322813792112012-09-19T10:57:03.732-04:002012-09-19T10:57:03.732-04:00Joel
I like to add an amendment to my last post. Y...Joel<br />I like to add an amendment to my last post. You compatriot Dr. Christoph Schiller (you can find him at motionmountain) has come up with a theory that essentially boils down to mine. His is a sort of phenomenological in nature (I don’t agree with everything he says), mine is more concrete. Still the two pictures are complimentary. Also, my model has also a hint of the standard model but qsahttps://www.blogger.com/profile/08193989424656595346noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-81938607518788250422012-09-19T10:31:25.552-04:002012-09-19T10:31:25.552-04:00Joel
Thank you for your interest. Your Question a...<br />Joel<br /><br />Thank you for your interest. Your Question about the constraint is at the heart of the system. The system (I will not use the word model although you could with some caution) seems to mimic reality by exposing some of the very important essential features of Schrodinger equation, Dirac equation, QFT and Gravity! But only certain essential features of these theories, probablyqsahttps://www.blogger.com/profile/08193989424656595346noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-75147401228013076582012-09-19T02:48:59.461-04:002012-09-19T02:48:59.461-04:00Qsa,
very interesting. I am not shure I understan...Qsa,<br /><br />very interesting. I am not shure I understand what you are doing.<br /><br />"Set a constraint with a particular relation between "l", "p", and "li" such that if this relation holds.<br /><br />What determines "A CONSTRAINT" ?<br /><br />Couldn't it be that you have just come up with the right Monte Carlo algorithm for the Joelhttps://www.blogger.com/profile/08454286410340247397noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-284417371156208752012-09-18T18:37:32.498-04:002012-09-18T18:37:32.498-04:00Dear all
Tegmark is 100% correct because my theor...Dear all<br /><br />Tegmark is 100% correct because my theory "quantum statistical automata" proves it.<br /><br />Reality exists hence we say it is true. But what is really true besides that more than anything else which we can really trust, it is mathematical facts. So, to my mind I connect both since both seem to be a statement of truth. So I took a guess that reality is something qsahttps://www.blogger.com/profile/08193989424656595346noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-59853030386077166232012-09-17T04:58:41.942-04:002012-09-17T04:58:41.942-04:00... which by the way proofs that Einstein, another...... which by the way proofs that Einstein, another genius was "wrong" ...<br /><br />Joelhttps://www.blogger.com/profile/08454286410340247397noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-90476572787625421302012-09-17T04:52:58.762-04:002012-09-17T04:52:58.762-04:00Eric,
"It is best not to get locked into one...Eric, <br />"It is best not to get locked into one mans view of how to look at the world, or a portion of the world."<br /><br />Of course, we are all human, we are all limited.<br /><br />Here is a very nice illustration that demonstrates the "tension" of our natural intuition and the quantum "reality":<br />http://plus.maths.org/content/proof-kochen-specker-theoremJoelhttps://www.blogger.com/profile/08454286410340247397noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-5742692363277745432012-09-16T15:33:13.253-04:002012-09-16T15:33:13.253-04:00"It is best not to get locked into one mans v..."It is best not to get locked into one mans view of how to look at the world, or a portion of the world."<br /><br />Make that ANY one man's view, most definitely including my view of how things work.Erichttps://www.blogger.com/profile/08213251864943443334noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-52164587661921517832012-09-16T15:10:40.120-04:002012-09-16T15:10:40.120-04:00Joel and Don,
Reading and hearing about Richard Fe...Joel and Don,<br />Reading and hearing about Richard Feynman is what got me Interested in physics 25 years ago. Particularly his thoughts on the quantum world. It was just too fantastic to not be fascinating. Also, I concurred with his belief that the quantum world is unvisualizable.<br /><br />However, as charismatic as he was and is he was only a human being. A human being with his own Erichttps://www.blogger.com/profile/08213251864943443334noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-23790170925723007772012-09-16T11:22:19.270-04:002012-09-16T11:22:19.270-04:00Joel,
The Feynman clips are delightful. Also enjoy...Joel,<br />The Feynman clips are delightful. Also enjoyed this one in which he notes that features of our individual mental landscapes and processes may vary significantly and require some translation:<br /><br />http://www.youtube.com/watch?v=lr8sVailoLw&feature=related<br /><br />In the clip on intuition he clearly make the case that there are realms, which are only accurately accessible Don Fosterhttps://www.blogger.com/profile/04814669413022486958noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-61221530291441668412012-09-16T05:03:57.547-04:002012-09-16T05:03:57.547-04:00Don,
I share your scepticism and can't give yo...Don,<br />I share your scepticism and can't give you an answer to your question. <br /><br />Dirac once said:<br />"One field of work in which there has been too much speculation is cosmology. There are very few hard facts to go on but theoretical workers have been busy constructing various models for the universe based on any assumptions that they fancy. These models are probably all Joelhttps://www.blogger.com/profile/08454286410340247397noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-83275509937138413122012-09-16T04:48:09.995-04:002012-09-16T04:48:09.995-04:00Plato,
very nice statement. I fully agree.
In te...Plato, <br />very nice statement. I fully agree.<br /><br />In terms of intuition, I have nothing to add to this: <br />http://www.youtube.com/watch?v=jrk3GbJU0k0&feature=related<br /><br />RegardsJoelhttps://www.blogger.com/profile/08454286410340247397noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-64698219504686355852012-09-15T20:56:07.378-04:002012-09-15T20:56:07.378-04:00One further thought on noncommutative geometry and...One further thought on noncommutative geometry and why it is associated with tiny spaces and objects only. Gravitationally significant objects occupy a significant volume of space. This is because the G force is ~ 10^-42 smaller than the strong force. You can measure most effects of gravity without deforming the space around it by measuring it. <br /><br />There is no such thing happening with Erichttps://www.blogger.com/profile/08213251864943443334noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-23077480603992290162012-09-15T20:44:33.934-04:002012-09-15T20:44:33.934-04:00This comment has been removed by the author.Erichttps://www.blogger.com/profile/08213251864943443334noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-91664298323345048622012-09-15T19:32:11.031-04:002012-09-15T19:32:11.031-04:00Claro.
Thanks.Claro.<br />Thanks.Don Fosterhttps://www.blogger.com/profile/04814669413022486958noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-61423052500835395002012-09-15T17:15:48.371-04:002012-09-15T17:15:48.371-04:00Hi Plato,
I think you brought up a particularly go...Hi Plato,<br />I think you brought up a particularly good point. Intuition plays an important part in physics because it is a subject that deals with the intersection of abstract ideas and mathematics. But you still need to be able to visualize in your mind what you are working on even if you cannot see with the five senses what you are working on. Many scientists have become disconnected from Erichttps://www.blogger.com/profile/08213251864943443334noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-2217484547227141302012-09-15T14:51:34.414-04:002012-09-15T14:51:34.414-04:00Hi Joel
I found this suitable.
Is Our Intuitio...Hi Joel <br /><br />I found this suitable.<br /><br /><i><b>Is Our Intuition Lost?</b><br /><br />What is the price one pays for dealing with Noncommutative Geometry? Probably the most significant one is that the concept of space (understood as a set of points) is lost and can no longer visualize the objects we are dealing with. This is not new in physics: quantum mechanics has taught us to dealPlatoHagelhttps://www.blogger.com/profile/00849253658526056393noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-80136547894381509222012-09-15T10:16:16.700-04:002012-09-15T10:16:16.700-04:00Thanks Joel,
Alexander Vilekin is well groomed and...Thanks Joel,<br />Alexander Vilekin is well groomed and gives the impression of having a very tidy mind, like someone it would be a pleasure to talk with, ask questions of. He makes an easy to follow, plausible case for the universe arising from some grand quantum fluctuation. I appreciate physics at the storybook level. <br /><br />Still, considering his metaphor of a bubble, there is a tension Don Fosterhttps://www.blogger.com/profile/04814669413022486958noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-28390351920497586822012-09-15T02:37:01.305-04:002012-09-15T02:37:01.305-04:00Plato Hagel,
"...yet such a foundation asks ...Plato Hagel,<br /><br />"...yet such a foundation asks that the Higg's mass is defining here"<br /><br />The Higgs is yet another gauge symmetry, yet one of a discrete noncommutative space. (Thus again, GEOMETRY).<br />For details, see Conne's noncommutative standard model. <br /><br />BestJoelhttps://www.blogger.com/profile/08454286410340247397noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-56482925095426967142012-09-15T02:22:33.767-04:002012-09-15T02:22:33.767-04:00Don,
"Not surprisingly, this does not follow ...Don,<br />"Not surprisingly, this does not follow for me. It would seem a matter of mental hygiene for one to be able to distinguish between what is real and what is an artifact of cognitive abstraction."<br />So then, what do you think about people doing quantum cosmology, assuming that spacetime comes about through a quantum fluctuation, implicitly assuming that quantum physics is Joelhttps://www.blogger.com/profile/08454286410340247397noreply@blogger.com