tag:blogger.com,1999:blog-10614348.post8432453013897851313..comments2024-01-22T11:26:37.599-08:00Comments on TGD diary: Has dark matter particle been observed?Matti Pitkänenhttp://www.blogger.com/profile/13512912323574611883noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-10614348.post-16351274709045234362014-10-20T16:59:49.690-07:002014-10-20T16:59:49.690-07:00
Witten is the leader figure of M-theory. He still...<br />Witten is the leader figure of M-theory. He still believes in string theory although his teacher Gross has become skeptic also also many other string gurus. In practice the age of superstrings is over. <br /><br />It is perfectly understandable that Witten is not interested in searching possible competitors for string theory. This would require also a lot of effort since string theory hegemony has censored out competitors very effectively!<br /><br />Witten is great mathematician. To be a great physicist requires something else. As Einstein said, the worst thing that can happen to a theoretical physicist is to become a mathematician. Good mathematician solves well-defined mathematical problems. Good theoretical physicist formulates new concepts and builds new visions. <br /><br />A comment about Lisi. In the middle of the short lasting media tornado it was not mentioned that the E_8 of Lisi have been present in literature for decades, as long as we have had GUT paradigm, which has lethal problems with proton lifetime. Within few months it was demonstrated that the E_8 idea does not work group theoretically and also Lisi admitted that. <br /><br />For some reason Lisi however became a name. Probably because media business wants names and also because he has a media sexy background. Media public had got enough from stories about starving ingenious scientists developing great discoveries in loneliness. Why the next Einstein could not be a rich surfer?! As physicists and mathematicians Lisi and Witten belong to totally different categories.<br /><br /> One should also be very careful to not make strings as such the source of evil. Only the particular realisation as super strings was a failure. Strings and associated conformal invariance (properly generalized) emerge also from TGD. These strings are however strings in 4-D space some surface, not in 10- or 11- D space and they are also highly topological objects since both ordinary braiding of strings and 2-braiding of string world sheets are possible. In quantum biology this phenomenon is in crucial role.<br /><br />It would be nice if the colleagues could force themselves to read these lines and perhaps some introductions of books about TGD: these ideas are wonderful and deserve full attention. I do not want any credit for the irritating fact that this vision happened to see daylight through my brain, and I fully admit that it would have been more polite to have proper academical position and credentials;-). My sincere apologies for colleagues!;-)<br /> Matpitka@luukku.comhttp://tgdtheory.fi/noreply@blogger.comtag:blogger.com,1999:blog-10614348.post-20482727953961731482014-10-20T11:49:17.777-07:002014-10-20T11:49:17.777-07:00I have many times tried to open up Tony Smiths hom...I have many times tried to open up Tony Smiths homepage without result. Has he changed the adress?<br />He has many interesting ideas, and collaborate with Lisi. Lately I have become more interested in how he think it and the perturbation mechanism.Ullahttps://www.blogger.com/profile/16634036177244152897noreply@blogger.comtag:blogger.com,1999:blog-10614348.post-411331198201474232014-10-20T10:25:20.220-07:002014-10-20T10:25:20.220-07:00http://blogs.scientificamerican.com/cross-check/20...http://blogs.scientificamerican.com/cross-check/2014/10/20/surfer-physicist-garrett-lisi-offers-alternative-to-string-theoryand-academia/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+cross-check%2Ffeed+%28Blog%3A+Cross-Check%29<br /><br />Horgan: Edward Witten, when I asked him in a recent Q&A if string theory had any serious rivals for a unified theory, replied, “There are not any interesting competing suggestions.” Comment?<br /><br />Lisi: That stings a little. I don’t imagine other physicists working on fundamental non-string theories appreciate it either. Ed Witten has done incredibly impressive work, opening new doors with his insights in mathematics and physics. His papers are things of beauty. He, his students, and his colleagues have dominated the high-energy theoretical physics community with string models for decades now. However, even the most enlightened foresight from the most brilliant mind can be wrong, so it would be better if he wasn’t a dick about it.Anonymousnoreply@blogger.com