Comments on: String Theory, With a View Towards Reality http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/ Random samplings from a universe of ideas. Sun, 08 Nov 2009 04:58:28 -0600 http://wordpress.org/?v=2.8.4 hourly 1 By: vengoroso http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/comment-page-1/#comment-14950 vengoroso Sat, 22 Apr 2006 09:53:02 +0000 http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/#comment-14950 Hey, sorry for the Spanish trackback. Usually they (trackbacks) don't work in our serrver, but maybe I did something different this time :-P We are a group of pre- and post-docs working in different areas in math (from nc. geometry to PDE's to rep theory) supposed to be based in the Univ. of Granada (Spain), though we are a bit spreaded over the world right now. Some of us are pretty interested in connections arising between math and modern physics, and so I proposed my mates to read Nick lectures in a regular basis and discuss about them on our blog. We also read "Not Even Wrong", but as pure mathematicians we are not in te right position to argue on the validity of String Theory (nor any other modern physics, btw). Still, I personally find really interesting the idea of popolarizing the nowadays science, even if it is a controversial one. Hey, sorry for the Spanish trackback. Usually they (trackbacks) don’t work in our serrver, but maybe I did something different this time :-P

We are a group of pre- and post-docs working in different areas in math (from nc. geometry to PDE’s to rep theory) supposed to be based in the Univ. of Granada (Spain), though we are a bit spreaded over the world right now. Some of us are pretty interested in connections arising between math and modern physics, and so I proposed my mates to read Nick lectures in a regular basis and discuss about them on our blog.

We also read “Not Even Wrong”, but as pure mathematicians we are not in te right position to argue on the validity of String Theory (nor any other modern physics, btw). Still, I personally find really interesting the idea of popolarizing the nowadays science, even if it is a controversial one.

]]> By: Plato http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/comment-page-1/#comment-14949 Plato Sat, 22 Apr 2006 04:49:09 +0000 http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/#comment-14949 Click on name Along with the introduction by presentation of the Compton Lectures to string theory, for lay people, I thought it important that some information also be assimilated, about what a "good theorist" might be, and what they have to know. Where would we be(independant and whole) without good teachers, thoughtful parents? :) Everyone thinks about our "young students," but does not necessarily think about the "young minds" in those advancing with age? Does senility really overtake those who might have a open mind to learning? Possibly, ingenuity knows no age? Imagine a layman cane striking the scientist's door with a theory in hand.:) Naw! Click on name

Along with the introduction by presentation of the Compton Lectures to string theory, for lay people, I thought it important that some information also be assimilated, about what a “good theorist” might be, and what they have to know.

Where would we be(independant and whole) without good teachers, thoughtful parents? :)

Everyone thinks about our “young students,” but does not necessarily think about the “young minds” in those advancing with age? Does senility really overtake those who might have a open mind to learning? Possibly, ingenuity knows no age?

Imagine a layman cane striking the scientist’s door with a theory in hand.:)

Naw!

]]> By: Jack http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/comment-page-1/#comment-14948 Jack Fri, 21 Apr 2006 03:14:43 +0000 http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/#comment-14948 About the Australian accent: the problem with Australians is that it is not possible to understand what they say. The problem with Americans, by contrast, is that it is. About the Australian accent: the problem with Australians is that it is not possible to understand what they say. The problem with Americans, by contrast, is that it is.

]]> By: Jack http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/comment-page-1/#comment-14947 Jack Fri, 21 Apr 2006 02:30:44 +0000 http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/#comment-14947 Peter, Sean did say that "time will probably have run out" by the time string theory connects with reality. And don't forget that when Sean talks about time, he means cosmic time. :-) Anyway, note that the title of the talks speaks of a "view towards reality". That seems suitably modest to me. Perhaps you would do better to wait to see what he has to say before passing judgement? Peter, Sean did say that “time will probably have run out” by the time string theory connects with reality. And don’t forget that when Sean talks about time, he means cosmic time. :-)

Anyway, note that the title of the talks speaks of a “view towards reality”. That seems suitably modest to me. Perhaps you would do better to wait to see what he has to say before passing judgement?

]]> By: Sacha http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/comment-page-1/#comment-14946 Sacha Fri, 21 Apr 2006 01:49:59 +0000 http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/#comment-14946 Thanks for the link Nick, I'll have a look at it :-) If super-Chern-Simons theory ever appears, you'll be happy to know that people have created knot invariants from quantum supergroups - eg people at the University of Qld (Mark Gould, Jon Links, Ruibin Zhang, Tony Bracken etc) in the early 90s, and more recently Nathan Geer. It's pretty easy to do once you have an R-matrix for a rep of a quantum supergroup - you just "follow the recipe". Thanks for the link Nick, I’ll have a look at it :-)

If super-Chern-Simons theory ever appears, you’ll be happy to know that people have created knot invariants from quantum supergroups – eg people at the University of Qld (Mark Gould, Jon Links, Ruibin Zhang, Tony Bracken etc) in the early 90s, and more recently Nathan Geer.

It’s pretty easy to do once you have an R-matrix for a rep of a quantum supergroup – you just “follow the recipe”.

]]> By: Peter Woit http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/comment-page-1/#comment-14936 Peter Woit Thu, 20 Apr 2006 21:55:56 +0000 http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/#comment-14936 Umm, I'm all for efforts to promote the better understanding of physics among the wider public, but given the heavy promotion of string theory over the last twenty-plus years, is this kind of thing really helpful? Claiming that string theory is anywhere near explaining dark energy and dark matter seems to me to be highly misleading, and there has already been a huge amount of this kind of hype going on for many years. I do notice that there seems to be no attempt to claim that string theory will explain the standard model. Umm, I’m all for efforts to promote the better understanding of physics among the wider public, but given the heavy promotion of string theory over the last twenty-plus years, is this kind of thing really helpful? Claiming that string theory is anywhere near explaining dark energy and dark matter seems to me to be highly misleading, and there has already been a huge amount of this kind of hype going on for many years. I do notice that there seems to be no attempt to claim that string theory will explain the standard model.

]]> By: Nick Halmagyi http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/comment-page-1/#comment-14945 Nick Halmagyi Thu, 20 Apr 2006 20:34:14 +0000 http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/#comment-14945 Sacha, the version of string theory where Chern-Simons theory emerges is topological string theory. This is initially obtained from a supersymmetric string theory but one trades in the supersymmetry generators in order to topologicalize the theory. I dont know of any useful circumstance where the super version Chern=Simons theory emerges, no doubt if it did, quantum supergroups would be relevant. In answer to your question: there is much significance in the appearance of knot invariants, Marcos Marino has several excellent reviews http://arxiv.org/abs/hep-th/0210145 nick Sacha,

the version of string theory where Chern-Simons theory emerges is topological string theory. This is initially obtained from a supersymmetric string theory but one trades in the supersymmetry generators in order to topologicalize the theory. I dont know of any useful circumstance where the super version Chern=Simons theory emerges, no doubt if it did, quantum supergroups would be relevant.

In answer to your question: there is much significance in the appearance of knot invariants, Marcos Marino has several excellent reviews http://arxiv.org/abs/hep-th/0210145

nick

]]> By: Sean http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/comment-page-1/#comment-14944 Sean Thu, 20 Apr 2006 17:09:47 +0000 http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/#comment-14944 Cynthia, the Enrico Fermi Institute has no connection with Fermilab, so there is no archive of webcasts from EFI. Cynthia, the Enrico Fermi Institute has no connection with Fermilab, so there is no archive of webcasts from EFI.

]]> By: Cynthia http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/comment-page-1/#comment-14943 Cynthia Thu, 20 Apr 2006 16:58:17 +0000 http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/#comment-14943 Nick, thanks for responding. However, I must point out that EFI already has a huge archive of - publically available - webcast lectures via Fermilab Media Services. Nick, thanks for responding. However, I must point out that EFI already has a huge archive of – publically available – webcast lectures via Fermilab Media Services.

]]> By: Nick Halmagyi http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/comment-page-1/#comment-14935 Nick Halmagyi Thu, 20 Apr 2006 16:18:46 +0000 http://blogs.discovermagazine.com/cosmicvariance/2006/04/19/string-theory-with-a-view-towards-reality/#comment-14935 It may comfort people to know that I have an assistant on hand who will provide an interpretive dance should my accent prove too baffling. regarding webcasting, I don't imagine it happening any time soon at EFI. Although... there is a gentleman in the crowd who is taping this series, so perhaps some kind soul may volunteer to convert it to the relevant format and arrange the bandwidth etc. I will enquire with our local computer afficionados. nick It may comfort people to know that I have an assistant on hand who will provide an interpretive dance should my accent prove too baffling.

regarding webcasting, I don’t imagine it happening any time soon at EFI. Although… there is a gentleman in the crowd who is taping this series, so perhaps some kind soul may volunteer to convert it to the relevant format and arrange the bandwidth etc. I will enquire with our local computer afficionados.

nick

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