tag:blogger.com,1999:blog-22973357.post3518385654733612319..comments2023-09-27T07:44:19.769-04:00Comments on Sabine Hossenfelder: Backreaction: RenormalizationSabine Hossenfelderhttp://www.blogger.com/profile/06151209308084588985noreply@blogger.comBlogger28125tag:blogger.com,1999:blog-22973357.post-73040841889827891942009-07-08T03:02:14.523-04:002009-07-08T03:02:14.523-04:00ahaha so funny and cute!
Amazing post! Actually a...ahaha so funny and cute!<br /><br />Amazing post! Actually all your humor posts are awesome! Just met your blog and I can't stop reading it!<br /><br />Best,<br />Fernanda..fephttp://researcherslife.wordpress.comnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-51093402004887002482007-11-21T20:39:00.000-05:002007-11-21T20:39:00.000-05:00NiceAs for unrequited love - some sort of no-go th...Nice<BR/><BR/>As for unrequited love - some sort of no-go theorem perhaps?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-731893838634104142007-11-17T15:56:00.000-05:002007-11-17T15:56:00.000-05:00Just as well both particles thought they liked one...Just as well both particles thought they liked one another. What if it was a case of unrequited love?<BR/>:-(nigehttps://www.blogger.com/profile/03402194253543690982noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-57672718354330443572007-11-13T17:12:00.000-05:002007-11-13T17:12:00.000-05:00Aaaahhh!! Here we go! One Googol of thanks to the ...Aaaahhh!! Here we go! One Googol of thanks to the never-sleeping system admin back at the ITP in Frankfurt :-)Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-87102368399823674562007-11-13T15:44:00.000-05:002007-11-13T15:44:00.000-05:00our server is down, so the pics are gone. hopefull...<I>our server is down, so the pics are gone. hopefully back up and running later today.</I><BR/><BR/>This seems to be quite a severe problem - not only the web services are affected, but email and remote access doesn't work either. And usually, the problem is fixed within a few hours. Now, I fear that the outage will persist at least until tomorrow, i.e. for more than 12 hours...stefanhttps://www.blogger.com/profile/09495628046446378453noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-39393194208097865842007-11-13T09:28:00.000-05:002007-11-13T09:28:00.000-05:00sorry, our server is down, so the pics are gone. h...sorry, our server is down, so the pics are gone. hopefully back up and running later today.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-50027819981846299072007-11-12T19:55:00.000-05:002007-11-12T19:55:00.000-05:00"He likes her" and "She likes him" often leads to ..."He likes her" and "She likes him" often leads to super-something.Arunhttps://www.blogger.com/profile/03451666670728177970noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-70754559630628040422007-11-12T13:02:00.000-05:002007-11-12T13:02:00.000-05:00When states cross in chemistry they instead split ...When states cross in chemistry they instead split and separate, or Jahn-Teller distortion diddles the outcome. This models why academic chemistry labs are well-staffed on Friday and Saturday nights. <BR/><BR/>If NSF won't fund this reasrch, NIH will get all jiggy wit it.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-2212663220725237572007-11-12T11:19:00.000-05:002007-11-12T11:19:00.000-05:00rotflrotflChanda @ Disordered Cosmoshttps://www.blogger.com/profile/11462022695342468789noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-47875506800245153982007-11-12T09:45:00.000-05:002007-11-12T09:45:00.000-05:00Hi Anonymous, well, it was only one sentence sayin...Hi Anonymous, <BR/><BR/>well, it was only one sentence saying the strong interaction is asymptotically free. it lead my thoughts running towards confinement however, and I found I shouldn't overstretch it. It's kind of interesting though, I've <A HREF="http://backreaction.blogspot.com/2007/09/communication.html" REL="nofollow">referred earlier</A> to communication as 'gluons' and occasionally it Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-14251663215635553092007-11-12T07:41:00.000-05:002007-11-12T07:41:00.000-05:00Now I don't know what Gross and Wilczek would say ...Now I don't know what Gross and Wilczek would say about this picture of renormalization, but I'll say that asymptotic freedom could bring much needed heat (and spice) to it!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-36315229097965224902007-11-12T03:44:00.000-05:002007-11-12T03:44:00.000-05:00I think that there ought to be a (1/2!)^2 symmetry...I think that there ought to be a (1/2!)^2 symmetry factor since there are identical particles in the initial & final states; for same-sex particles the graphs ought to be the same unless they are all in the final or all in the initial states, which you could get by crossing, e.g. one chick having a crush on three other chicks simultaneously.<BR/><BR/>If the lesbian 1 on 3 experiment is ever Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-86111479752171111322007-11-12T00:37:00.000-05:002007-11-12T00:37:00.000-05:00When she likes him, and he likes her, it is a Yes-...When she likes him, and he likes her, it is a Yes-matrix element.Arunhttps://www.blogger.com/profile/03451666670728177970noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-22826704488654764162007-11-11T23:10:00.000-05:002007-11-11T23:10:00.000-05:00I think that you need more than two sexes to make ...I think that you need more than two sexes to make these diagrams convergent.CapitalistImperialistPighttps://www.blogger.com/profile/17523405806602731435noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-60808481750225338202007-11-11T21:12:00.000-05:002007-11-11T21:12:00.000-05:00Oh man, this is totally going on the wall outside ...Oh man, this is totally going on the wall outside my door. Most excellent!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-67151251785463738902007-11-11T21:05:00.000-05:002007-11-11T21:05:00.000-05:00OMG yes. :)Incidentally, I just learned in my E&M ...OMG yes. :)<BR/><BR/>Incidentally, I just learned in my E&M class if you treat a point charge distribution as a continuous charge distribution, its total energy seems to be infinite! Now the idea of renormalization seems a lot less shady to me...Aaronhttps://www.blogger.com/profile/18281785407407667986noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-73970217459772827972007-11-11T20:20:00.000-05:002007-11-11T20:20:00.000-05:00Confusion , (and the subsequent unravelling) are u...Confusion , (and the subsequent unravelling) are useful :). So, I would love to hear the part about asymptotic freedom.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-11123617226068953342007-11-11T19:49:00.000-05:002007-11-11T19:49:00.000-05:00glad I didn't add the line about asymptotic freedo...glad I didn't add the line about asymptotic freedom that I had in mind - it would have confused you even more ;-)Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-24995401023660725712007-11-11T18:30:00.000-05:002007-11-11T18:30:00.000-05:00I thought I had typed to go to asymptotia, and I w...I thought I had typed to go to asymptotia, and I was wondering why Clifford was tryng Bee-ish jokes :) .Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-67501849037154404412007-11-11T17:35:00.000-05:002007-11-11T17:35:00.000-05:00Brilliant! :DBrilliant! :DFrankhttps://www.blogger.com/profile/07530630846648786816noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-65145221829033532042007-11-11T17:32:00.000-05:002007-11-11T17:32:00.000-05:00What I was actually talking about in my above comm...What I was actually talking about in my above comment is renormalization : :, normal ordering of operators. What I was talking about in the post is renormalization of the bare masses/couplings.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-21243049141714233022007-11-11T17:16:00.000-05:002007-11-11T17:16:00.000-05:00Thanks, Bee.One point to clarify if you have a min...Thanks, Bee.<BR/><BR/>One point to clarify if you have a minute: you spoke of potential, but IIUC the field energy density is based on field strength, and is therefore an absolute ('tho may be hard to define in the regions close to the electron's source.)Neil Bateshttps://www.blogger.com/profile/04564859009749481136noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-49502038271871053182007-11-11T15:07:00.000-05:002007-11-11T15:07:00.000-05:00Hi Neil,well, I assume you can read what the textb...Hi Neil,<BR/><BR/>well, I assume you can read what the textbooks say, so I interpret your question as asking for my opinion. I think renormalization is a doable but ugly way to deal with our lack of knowledge about what 'really' happens at Planckian energies. <BR/><BR/>Even in classical EM, the potential is defined only up to a constant, and you can only measure potential differences.<BR/><BR/>Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-21823605556568900422007-11-11T14:44:00.000-05:002007-11-11T14:44:00.000-05:00This is cute, and remember that physics is differe...This is cute, and remember that physics is different for "dressed" than for "undressed" particles!<BR/>But what about "real" renormalization: Is it a reasonable theory, or a contrived hack? Even if you take polarization of the vacuum into account, what is the integral of field energy around an electron down to the alleged "point" center, or to a string of some kind? I still don't see how it couldNeil Bateshttps://www.blogger.com/profile/04564859009749481136noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-17449039719331029702007-11-11T14:11:00.000-05:002007-11-11T14:11:00.000-05:00Dear Bee,that's great :-)Best, StefanDear Bee,<BR/><BR/>that's great :-)<BR/><BR/>Best, Stefanstefanhttps://www.blogger.com/profile/09495628046446378453noreply@blogger.com