tag:blogger.com,1999:blog-8883034.comments2016-05-25T09:39:02.341+02:00atdotdeRobert Hellinghttps://plus.google.com/118220336522940810893noreply@blogger.comBlogger485125tag:blogger.com,1999:blog-8883034.post-46500594604114315142016-05-25T09:39:02.341+02:002016-05-25T09:39:02.341+02:00Thanks Yegor, that seems indeed to be the relevant...Thanks Yegor, that seems indeed to be the relevant reference. In short: You get time ordered correlation functions by imposing the correct "vacuum at infinity" boundary conditions.Robert Hellinghttp://www.blogger.com/profile/06634377111195468947noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-55768097564719659302016-05-24T23:03:09.775+02:002016-05-24T23:03:09.775+02:00Do you want something like a real-time formalism? ...Do you want something like a real-time formalism? If yes, check the paper by Skenderis and van Rees http://arxiv.org/abs/0812.2909. They discuss how to reproduce all sorts of Lorentzian correlation functions.Yegorhttp://www.blogger.com/profile/05551875996398074045noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-8092469998748663642015-06-05T04:38:38.620+02:002015-06-05T04:38:38.620+02:00Love it! Very interesting topics, I hope the incom...Love it! Very interesting topics, I hope the incoming comments and suggestion are equally positive. Thank you for sharing this information that is actually helpful.<br /><br /><br />ufgop.org<br /><a href="http://www.ufgop.org" rel="nofollow">ufgop.org</a><br />lee woohttp://www.blogger.com/profile/07720547920308398294noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-22341972969433659592014-12-11T04:05:01.586+01:002014-12-11T04:05:01.586+01:00Nice post. I enjoy reading your article. I found n...Nice post. I enjoy reading your article. I found new ideas and very good information. I will come back for the next post. Thank you.<br /><br /><a href="http://www.imarksweb.org" rel="nofollow">Wenny</a><br />www.imarksweb.orgLeslie Limhttp://www.blogger.com/profile/03983279751843228358noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-20192976166850854122014-10-08T11:46:42.016+02:002014-10-08T11:46:42.016+02:00Very good tutorial. I read your blog. It explains ...Very good tutorial. I read your blog. It explains all the necessary aspect for the price of margarine. I read the other comments also which enhance the information in your blog.<br /><a href="http://www.arx.com/information/pdf-signature" rel="nofollow"> digital signature PDF </a>kenzie joneshttp://www.blogger.com/profile/05521903245653355590noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-21706966371039558592014-10-08T06:53:43.732+02:002014-10-08T06:53:43.732+02:00I read your blog.You admit your ignorance. I read ...I read your blog.You admit your ignorance. I read the other comments also.I have no knowledge about it but now I have interest in this type of information.Thanks.<br /><a href="http://www.arx.com/information/pdf-signature/digital-signatures-for-adobe-reader.htm" rel="nofollow"> digital signature Adobe Reader </a> kenzie joneshttp://www.blogger.com/profile/05521903245653355590noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-13627985922787325722014-09-22T10:56:56.287+02:002014-09-22T10:56:56.287+02:00Thanks for this post. Seems like there’s always so...Thanks for this post. Seems like there’s always something new I learn even after being in the field for 25 years…cocoon bobbinhttp://www.cocoon-bobbin-oil.comnoreply@blogger.comtag:blogger.com,1999:blog-8883034.post-76757241740332643942014-09-09T06:31:28.443+02:002014-09-09T06:31:28.443+02:00Thanks for the above information sharing with us. ...Thanks for the above information sharing with us. You mentioned all the necessary information regarding Ahrenshoop update in so effective way. I will discuss that blog with my friends also.<br /><a href="http://www.arx.com" rel="nofollow"> electronic signature </a> kenzie joneshttp://www.blogger.com/profile/05521903245653355590noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-71814231998096408162014-09-06T13:13:31.509+02:002014-09-06T13:13:31.509+02:00What do you want to say?In your blog I can't u...What do you want to say?In your blog I can't understand the thing. Web2.0 have too much slow speed. In the mean while we listen music or click on some videos.<br /><a href="http://www.arx.com" rel="nofollow"> digital signatures </a>kenzie joneshttp://www.blogger.com/profile/05521903245653355590noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-54916492866818013672014-07-14T03:47:04.307+02:002014-07-14T03:47:04.307+02:00Great goods from you I actually like what you'...Great goods from you I actually like what you've acquired here can’t wait to read far more from you. <br /><br />www.triciajoy.comlesannahttp://www.triciajoy.comnoreply@blogger.comtag:blogger.com,1999:blog-8883034.post-33225333331526782782014-06-26T08:29:03.472+02:002014-06-26T08:29:03.472+02:00No matter how far a person can go the horizon is s...No matter how far a person can go the <a href="http://www.mocsbar.com/pkk/horizon" rel="nofollow">horizon</a> is still way beyond you. See the below for more info. <br /><br />#horizon <br />www.mocsbar.comlee woohttp://www.blogger.com/profile/07720547920308398294noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-59395965760989120742014-04-15T13:33:42.632+02:002014-04-15T13:33:42.632+02:00"The 't Hooft limit leads to important si..."The 't Hooft limit leads to important simplifications in perturbative QFT ..." Does 't Hooft determinism lead to even more important simplifications?<br />"We claim that our observations add a new twist to discussions concerning the interpretation of quantum mechanics, which we call the cellular automaton (CA) interpretation.” — G. 't Hooft<br /><a href="http://arxiv.org/abs/1207.3612" rel="nofollow">"Discreteness and Determinism in Superstrings", 2012 by Gerard 't Hooft</a><br /><a href="http://vixra.org/abs/1203.0036" rel="nofollow">Does the Fernández-Rañada-Milgrom Effect Explain the Flyby Anomaly?</a>David Brownhttp://www.blogger.com/profile/10537922851243581921noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-50463448846459623782014-02-04T14:01:30.934+01:002014-02-04T14:01:30.934+01:00Actually you can think of planar Yang-Mills in exa...Actually you can think of planar Yang-Mills in exactly the way you described above, i.e. at infinite N the path integral is exactly determined by a single saddle point, which is given by a set of 4 infinity by infinity matrices, which are usually dubbed master field, however as far as I can tell nobody has so far managed to make any use of that or determine any properties of these.<br />The original source for this are some old lecture notes by Witten called "The 1 / N Expansion In Atomic And Particle Physics" , which you can find here:<br />http://www-lib.kek.jp/cgi-bin/img_index?8002242<br /><br />Is this what you were looking for?Alexanderhttp://www.blogger.com/profile/07235510573788847842noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-77536191307381817382014-02-03T13:21:47.869+01:002014-02-03T13:21:47.869+01:00I finally got hold of the Floratos etal paper. Th...I finally got hold of the Floratos etal paper. They build on Jens Hoppe's way of viewing area preserving diffeos of a membrane (they write S^2 but in fact any two dimensional surface will do) as some N->infinity limit of SU(N). They argue that that this allows them to interpret the gauge indices as fourier decomposition of two additional coordinates. I don't see that this would in any way be related to planarity of feynman diagrams.Robert Hellinghttp://www.blogger.com/profile/06634377111195468947noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-2335192720349748402014-01-30T17:04:42.803+01:002014-01-30T17:04:42.803+01:00You can compute correlation functions in the path ...You can compute correlation functions in the path integral formalism. There you do have a notion of locality. So you could characterize entanglement by studying how these correlation functions behave. And you do have a notion of non-classical behavior, since you can compute these correlation functions with the ``classical'' measure or by taking the corrections into account-perturbatively (e.g. loop expansion) or non-perturbatively (e.g. lattice regularization).Stam Nicolishttp://www.blogger.com/profile/06379940898372024773noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-38939705189146581022014-01-30T16:42:20.799+01:002014-01-30T16:42:20.799+01:00Of course they don't factorise but that you al...Of course they don't factorise but that you already have for correlations (which can be classical). I am asking about entanglement which manifests itself in violations of inequalities that are obeyed classically.Robert Hellinghttp://www.blogger.com/profile/06634377111195468947noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-68898293981281786192014-01-30T14:45:53.831+01:002014-01-30T14:45:53.831+01:00Two interacting particles 1,2 are in general entan...Two interacting particles 1,2 are in general entangled - you see this in the path integral Z as the fact that it does not factorize as Z1*Z2.<br />But I guess I am missing the point of your question...Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8883034.post-38228195388444995642014-01-29T21:29:15.383+01:002014-01-29T21:29:15.383+01:00Regarding the first topic:
1/N plays the role of...Regarding the first topic: <br /><br />1/N plays the role of ``Planck's constant'', i.e. it's the quantization parameter. So the limit N->oo is the semi-classical limit.<br /><br />Maybe this <br /><br />E. G. Floratos, J. Iliopoulos and G. Tiktopoulos,<br /> ``A NOTE ON SU(infinity) CLASSICAL YANG-MILLS THEORY,''<br /> Phys. Lett. B217 (1989) 285<br /><br />would be relevant?Stam Nicolishttp://www.blogger.com/profile/06379940898372024773noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-8196543813296465572013-12-25T10:17:20.793+01:002013-12-25T10:17:20.793+01:00This is really difficult to learn and study. After...This is really difficult to learn and study. After reading so many blog posts I am still not clear with the complete idea behind it. <br /><a href="http://www.arx.com" rel="nofollow">e signatures</a>Jimmy Jarredhttp://www.blogger.com/profile/08668675991465015224noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-86079624074856066532012-11-06T19:49:34.690+01:002012-11-06T19:49:34.690+01:00Actually i found a chinesse paper...that says &quo...Actually i found a chinesse paper...that says "does the creation operator possess eigenvenctors?...i've read it...and...the a^+ have non zero eigenvectors...i followed the calculations...and...i think they are well done... days ago i found a paper about BEC and the eigenvectors of creation operator were included in the discussion...the idea was..if you have a limit (upper) in your system...you cant creat more states...so (a^+)|z >=0...the same idea to consider the coherent states for the "destruction" operator...Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8883034.post-40387936700503479812012-11-06T15:03:05.044+01:002012-11-06T15:03:05.044+01:00Hi Robert,
I think you are reading too much into ...Hi Robert,<br /><br />I think you are reading too much into this discussion. It gets easier to understand if you just consider what they set out to do: take the four postulates and see if they are consistent. There's a long discussion one can have as to whether one really wants or needs a unitary S-matrix, but that's really not part of the argument. I think in a nutshell the issue is the following: If you take the usual Hawking computation with local effective field theory in the black hole background, you get a mixed state at I^+. If you don't want a mixed state but you still want to hold on to the statistical interpretation of the BH entropy, you have to do something. The question is, can you do what it takes without "drama" at the horizon and without doing anything implausible to local field theory. The firewall argument says basically, no, you can't. If, that is, you believe in the postulates to begin with. Best,<br /><br />B.Beehttp://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-83696703007372307712012-10-03T08:44:37.894+02:002012-10-03T08:44:37.894+02:00I am so glad to see this. Meat definitely needs to...I am so glad to see this. Meat definitely needs to be cooked to a certain point. This is not good for you when it is not cooked to this point.Bloody Ragehttp://www.hannytech.com/onlinegames/bloody-rage.htmlnoreply@blogger.comtag:blogger.com,1999:blog-8883034.post-5675527601568261972012-07-29T17:32:12.045+02:002012-07-29T17:32:12.045+02:00Nor the relativistic case, nor QFT is in itself a ...Nor the relativistic case, nor QFT is in itself a problem for Bohmian mechanics, for a scalar field this has been done already in the original paper. Gauge fields and fermion fields are a little bit more problematic, but solutions already have been proposed. (My proposal to handle them is part of arXiv:0908.0591, even if Bohm isn't mentioned there, fermions and gauge fields appear there as effective fields only.)<br /><br />What we are, and, that means, also the states of our minds if we observe something, are described in BM by the position Q, and not the wave function. So, what we measure is always some Q, usually of some macroscopic pointer.Schmelzerhttp://ilja-schmelzer.denoreply@blogger.comtag:blogger.com,1999:blog-8883034.post-33767375626210364432012-06-15T09:13:15.064+02:002012-06-15T09:13:15.064+02:00I am a physics student and I am particular interes...I am a physics student and I am particular interested in string theory and postmodern physics, I would like to share some ideas with you through my my blog, as a student I want to understand as much as possible, here is my link:<br /><br />sgoomanee.blogspot.com<br />(the title is :physics and the human mind) , thankssalvish goomaneehttp://www.blogger.com/profile/13393206981760783467noreply@blogger.comtag:blogger.com,1999:blog-8883034.post-49170085324847582492012-03-15T21:11:12.253+01:002012-03-15T21:11:12.253+01:00I would like to thank you for the efforts you have...I would like to thank you for the <a href="https://bitjack21.com" rel="nofollow">efforts</a> you have put in writing this blog. I’m hoping <br />the same high-grade web site post from you in the future also. Actually your <br />creative writing abilities has encouraged me to get my own web site going now. <br />Really blogging is spreading its wings and growing fast. Your write up is a great example.bitjack21.comhttp://www.blogger.com/profile/15352363282748671665noreply@blogger.com