tag:blogger.com,1999:blog-22973357.post8013863943476801550..comments2020-07-03T11:27:10.708-04:00Comments on Sabine Hossenfelder: Backreaction: Einstein on the discretenes of space-timeSabine Hossenfelderhttp://www.blogger.com/profile/06151209308084588985noreply@blogger.comBlogger22125tag:blogger.com,1999:blog-22973357.post-32789324997136707682010-10-12T14:21:33.020-04:002010-10-12T14:21:33.020-04:00This comment has been removed by the author.Steven Colyerhttps://www.blogger.com/profile/10435759210177642257noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-25046823097759335362010-10-06T12:43:10.104-04:002010-10-06T12:43:10.104-04:00Quite correct, Don.
Consider the Sun observed wit...Quite correct, Don.<br /><br />Consider the Sun observed with 3 different sets of observational parameters: lower spatial resolution and upper spatial scale limit, similar upper and lower temporal constraints, and finally upper and lower mass scale constraints. We set and change these 6 parameters without thinking much about the significance of what we are doing.<br /><br />From a huge distance Robert L. Oldershawhttps://www.blogger.com/profile/15396555790655312393noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-60692579940094999022010-10-06T10:25:42.972-04:002010-10-06T10:25:42.972-04:00It must be difficult to know exactly when one has ...It must be difficult to know exactly when one has subtly projected the map upon the terrain. It would seem that, topologically, what appears continuous from one vantage might appear discrete from another.Don Fosterhttps://www.blogger.com/profile/04814669413022486958noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-23236402881464983312010-10-05T06:32:20.795-04:002010-10-05T06:32:20.795-04:00Hi Bee,
An interesting quote and one of which I w...Hi Bee,<br /><br />An interesting quote and one of which I wasn’t aware of and yet an opinion that can be garnered by reading other things that Einstein wrote; with the one Christine offered being just one example. This in effect is why I believe Einstein couldn’t bring himself to take Bohm’s treatment of QM seriously, as the wave component would necessarily have been comprised materially of Phil Warnellhttps://www.blogger.com/profile/15671311338712852659noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-25621959669440022322010-10-04T20:11:58.135-04:002010-10-04T20:11:58.135-04:00“reality cannot at all be represented by a continu...“reality cannot at all be represented by a continuous field." <br /><br />A. Einstein in The Meaning of Relativity (Princeton Science Library, 1988). p. 160.Christinehttps://www.blogger.com/profile/05271747374185459530noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-78424817186835799642010-10-04T14:18:49.987-04:002010-10-04T14:18:49.987-04:00Plato, I think the Afshar experiment is important ...Plato, I think the Afshar experiment is important and likely proves his point (in some manner) but I don't know of any new findings of importance since 2004-5. I think now it's more a matter of interpretative argument, or am I missing a new wrinkle in that?<br /><br />Captcha = "kidin", is Nature trying to tell me something ...Neil Bateshttps://www.blogger.com/profile/04564859009749481136noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-48537084293748760402010-10-04T13:08:29.179-04:002010-10-04T13:08:29.179-04:00This comment has been removed by the author.Robert L. Oldershawhttps://www.blogger.com/profile/15396555790655312393noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-82737132941700337262010-10-04T13:05:35.807-04:002010-10-04T13:05:35.807-04:00Note that for a discrete fractal model of nature&#...Note that for a discrete fractal model of nature's physical structure and its 4d S-T representation, the physical "manifold" is neither continuous nor discrete.<br /><br />The distinctions between "continuous" and "discrete" are resolution-dependent. For example, it depends on the usual S-T resolution and also on what portion(s) of the multi-leveled hierarchy of Robert L. Oldershawhttps://www.blogger.com/profile/15396555790655312393noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-86576377495787274712010-10-04T12:57:43.373-04:002010-10-04T12:57:43.373-04:00Wow, I get a completely different feeling. Did I g...Wow, I get a completely different feeling. Did I get it it wrong Bee, as follows:<br /><br />What I get is he's busting on Copenhagen again, the Interpre... , sorry, I meant the Copenhagen MIS-interpretation of Quantum Mechanics (but bad as it is, its the best we got. Damned positivists.).<br /><br />However, Copenhagen wasn't postulated yet in 1917, so that can't be it. <br /><br />ISteven Colyerhttps://www.blogger.com/profile/10435759210177642257noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-11957880495165505402010-10-04T11:46:02.591-04:002010-10-04T11:46:02.591-04:00Calculus assumes sufficient magnification smooths ...Calculus assumes sufficient magnification smooths a function into analysis. Fractal and self-similar functions do not smooth. A discontinuum Velcros with a coherent discontinuous probe. Atomic mass distributions self-similarly sum to centimeter radii as single crystals.<br /><br />Inverse chiral atomic mass distributions experience inverse torques translating through discontinuous space. Uncle Alhttps://www.blogger.com/profile/05056804084187606211noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-67780720650170721452010-10-04T11:43:19.713-04:002010-10-04T11:43:19.713-04:00The Single Photon Experiment at Rowan University i...<a href="http://users.rowan.edu/~afshar/" rel="nofollow">The Single Photon Experiment at Rowan University is a Success!</a><br /><br /><a href="http://www.analogsf.com/0409/altview2.shtml" rel="nofollow">A FAREWELL TO COPENHAGEN?</a>PlatoHagelhttps://www.blogger.com/profile/00849253658526056393noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-62928617919086940262010-10-04T11:21:01.947-04:002010-10-04T11:21:01.947-04:00Objectively if one is considered with phenomenolog...Objectively if one is considered with phenomenology how is such an expression given that one could see this in a way that one could by analogy accepted differing version to encapsulate this movement of expression?<br /><br /><a href="http://www.ii.com/math/ch/#terms" title="THE CONTINUUM<br />HYPOTHESIS-By Nancy McGough" rel="nofollow">2.3.1</a> <i>The Word "continuum"<br />Many people PlatoHagelhttps://www.blogger.com/profile/00849253658526056393noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-87171076723778611892010-10-04T11:07:51.311-04:002010-10-04T11:07:51.311-04:00oops...I mean how did we discover topology?:)oops...I mean how did we discover topology?:)PlatoHagelhttps://www.blogger.com/profile/00849253658526056393noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-37361542215583318482010-10-04T11:05:48.252-04:002010-10-04T11:05:48.252-04:00THE SURFACE of a marble table is spread out in fro...<i>THE SURFACE of a marble table is spread out in front of me. I can get from any one point on this table to any other point by passing continuously from one point to a “ neighbouring” one, and repeating this process a (large) number of times, or, in other words, by going from point to point without executing jumps.” I am sure the reader will appreciate with sufficient clearness, what I mean herePlatoHagelhttps://www.blogger.com/profile/00849253658526056393noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-91853811653153341872010-10-04T10:19:03.075-04:002010-10-04T10:19:03.075-04:00I think one should keep in mind that when Einstein...I think one should keep in mind that when Einstein wrote this he did not (and could not) know that discrete states of matter (a state with 17 electrons, for eaxmple) are excitations of a continuous quantum field. So maybe space time is discrete, but certainly not for the reason Einstein mentions.Thomashttps://www.blogger.com/profile/05432113427582811990noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-68715994595248767922010-10-04T10:05:53.789-04:002010-10-04T10:05:53.789-04:00In dense aether theory the space-time must always ...In dense aether theory the space-time must always remain inhomogeneous at least a bit - or it couldn't serve for energy spreading via transverse waves.<br /><br />Try to imagine Universe like the dense gas. If this Universe would be quite homogeneous, no energy could propagate through at distance along density fluctuations. But if such density fluctuations would exist, then the space-time Zephirhttps://www.blogger.com/profile/06010623752049244967noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-70943617995900245492010-10-04T09:41:04.165-04:002010-10-04T09:41:04.165-04:00Note that gravitational energy is problematical. P...Note that gravitational energy is problematical. Penrose talks about this in his big opus <i>The Road to Reality: A Complete Guide to the Laws of the Universe</i>. Don't have quote, but he notes (and has been discussed here) that space-time ripples don't carry energy in the conventional sense of EM waves, and even to define total energy in GR context is ambiguous etc.Neil Bateshttps://www.blogger.com/profile/04564859009749481136noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-54327675666197264832010-10-04T09:22:34.209-04:002010-10-04T09:22:34.209-04:00What's wrong with Einstein's 1927 hidden-v...<a href="http://arxiv.org/ftp/quant-ph/papers/0401/0401017.pdf" rel="nofollow">What's wrong with Einstein's 1927 hidden-variable interpretation of quantum mechanics?</a><br /><br />See for example "<a href="http://www.alberteinstein.info/gallery/pdf/CP6Doc30_English_pp146-200.pdf" rel="nofollow">The Foundation of the General Theory of Relativity</a>” On page 185 Einstein says "<Zephirhttps://www.blogger.com/profile/06010623752049244967noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-45630823516436421152010-10-04T09:05:40.275-04:002010-10-04T09:05:40.275-04:00Bee,
Taking a quick look, it seems that the paper...Bee,<br /><br />Taking a quick look, it seems that the <a href="http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VH6-3VV03W5-3&_user=10&_coverDate=12%2F31%2F1996&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_searchStrId=1484023306&_rerunOrigin=google&_acct=C000050221&_version=1&_urlVersion=0&Physicalisthttps://www.blogger.com/profile/13517496497063768807noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-55768306181278367712010-10-04T08:57:22.757-04:002010-10-04T08:57:22.757-04:00Physicalist,
That's an interesting comment, f...Physicalist,<br /><br />That's an interesting comment, for I was thinking about hidden-variable theories when I came across this quotation...Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-8143457253233064712010-10-04T08:55:03.675-04:002010-10-04T08:55:03.675-04:00I wonder whether this might have been connected to...I wonder whether this might have been connected to the hidden-variable quantum theory he was toying with early on. (I'm not sure whether it this time or not -- and haven't had quite enough coffee to try to figure it out . . . )Physicalisthttps://www.blogger.com/profile/13517496497063768807noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-68618961284573151202010-10-04T08:52:14.449-04:002010-10-04T08:52:14.449-04:00I am really impressed that Einstein, back in 1916,...I am really impressed that Einstein, back in 1916, had the modern insight that quantum mechanics implies granular space-time (or at least, the difficulty of a continuous model.) He may even have been thinking about how gravity could work into this. (Note the existence of early thought experiments like "Einstein's box" involving gravity and QM.)Neil Bateshttps://www.blogger.com/profile/04564859009749481136noreply@blogger.com