View Full Version : boundary states for non-gauge-field backgrounds?
Urs Schreiber
Jun11-04, 04:24 PM
<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no, location=no,scrollbars=yes,resizable=yes,status=no ,width=650,height=400'); newWindow.document.write('<HTML><HEAD><TITLE>Usenet ASCII</TITLE></HEAD><BODY topmargin=0 leftmargin=0 BGCOLOR=#F1F1F1><table border=0 width=625><td bgcolor=midnightblue><font color=#F1F1F1>This Usenet message\'s original ASCII form: </font></td></tr><tr><td width=449><br><br><font face=courier><UL><PRE>I have been looking at some papers by Koji Hashimoto, e.g. hep-th/0401043,\nhep-th/0312260 concerning deformations of boundary states in order to\ndescribe open string background field\n(http://golem.ph.utexas.edu/string/archives/000381.html).\n\nSince this works so well for gluons and tachyons, the natural question is:\nIs there anything known about boundary state deformations which describe for\ninstance massice background fields of RR fields, for instance?\n\n\n</UL></PRE></font></td></tr></table></BODY><HTML>');"> <IMG SRC=/images/buttons/ip.gif BORDER=0 ALIGN=CENTER ALT="View this Usenet post in original ASCII form"> View this Usenet post in original ASCII form </a></div><P></jabberwocky>I have been looking at some papers by Koji Hashimoto, e.g. http://www.arxiv.org/abs/hep-th/0401043,
http://www.arxiv.org/abs/hep-th/0312260 concerning deformations of boundary states in order to
describe open string background field
(http://golem.ph.utexas.edu/string/archives/000381.html).
Since this works so well for gluons and tachyons, the natural question is:
Is there anything known about boundary state deformations which describe for
instance massice background fields of RR fields, for instance?
Charlie Stromeyer Jr.
Jun14-04, 04:10 AM
<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no, location=no,scrollbars=yes,resizable=yes,status=no ,width=650,height=400'); newWindow.document.write('<HTML><HEAD><TITLE>Usenet ASCII</TITLE></HEAD><BODY topmargin=0 leftmargin=0 BGCOLOR=#F1F1F1><table border=0 width=625><td bgcolor=midnightblue><font color=#F1F1F1>This Usenet message\'s original ASCII form: </font></td></tr><tr><td width=449><br><br><font face=courier><UL><PRE>Urs Schreiber <Urs.Schreiber@uni-essen.de> wrote in message news:\n\n> I have been looking at some papers by Koji Hashimoto, e.g. hep-th/0401043,\n> hep-th/0312260 concerning deformations of boundary states in order to\n> describe open string background field\n> (http://golem.ph.utexas.edu/string/archives/000381.html).\n\nRegarding the first paper, why does it not say anything about the\nrelevant cohomology? The second paper is not by Hashimoto, but\nanyways, from where does the associativity of the star product in OSFT\noriginate?\n\n> Since this works so well for gluons and tachyons, the natural question is:\n> Is there anything known about boundary state deformations which describe for\n> instance massice background fields of RR fields, for instance?\n\nI don\'t know, but perhaps if you can make your question more specific\nwe might be able to think of something.\n\n</UL></PRE></font></td></tr></table></BODY><HTML>');"> <IMG SRC=/images/buttons/ip.gif BORDER=0 ALIGN=CENTER ALT="View this Usenet post in original ASCII form"> View this Usenet post in original ASCII form </a></div><P></jabberwocky>Urs Schreiber <Urs.Schreiber@uni-essen.de> wrote in message news:
> I have been looking at some papers by Koji Hashimoto, e.g. http://www.arxiv.org/abs/hep-th/0401043,
> http://www.arxiv.org/abs/hep-th/0312260 concerning deformations of boundary states in order to
> describe open string background field
> (http://golem.ph.utexas.edu/string/archives/000381.html).
Regarding the first paper, why does it not say anything about the
relevant cohomology? The second paper is not by Hashimoto, but
anyways, from where does the associativity of the star product in OSFT
originate?
> Since this works so well for gluons and tachyons, the natural question is:
> Is there anything known about boundary state deformations which describe for
> instance massice background fields of RR fields, for instance?
I don't know, but perhaps if you can make your question more specific
we might be able to think of something.
Charlie Stromeyer Jr.
Jun15-04, 07:33 PM
<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no, location=no,scrollbars=yes,resizable=yes,status=no ,width=650,height=400'); newWindow.document.write('<HTML><HEAD><TITLE>Usenet ASCII</TITLE></HEAD><BODY topmargin=0 leftmargin=0 BGCOLOR=#F1F1F1><table border=0 width=625><td bgcolor=midnightblue><font color=#F1F1F1>This Usenet message\'s original ASCII form: </font></td></tr><tr><td width=449><br><br><font face=courier><UL><PRE>"Charlie Stromeyer Jr." <cstromey@hotmail.com> wrote in message news:\n\n> Urs Schreiber <Urs.Schreiber@uni-essen.de> wrote in message news:\n>\n> > I have been looking at some papers by Koji Hashimoto, e.g. hep-th/0401043,\n> > hep-th/0312260 concerning deformations of boundary states in order to\n> > describe open string background field\n> > (http://golem.ph.utexas.edu/string/archives/000381.html).\n>\n> Regarding the first paper, why does it not say anything about the\n> relevant cohomology? The second paper is not by Hashimoto, but\n> anyways, from where does the associativity of the star product in OSFT\n> originate?\n\nBy coincidence, a partial answer to my question about the\nassociativity of the star product appeared today on hep-th in\n[hep-th/0406109], but I still do not see yet how this approach would\nbe related to the relevant non-abelian (or quantum) cohomology.\n\nUrs, since the above Hashimoto paper is about D-branes and non-abelian\nYM you might want to re-read what John Baez, Aaron Bergman, Thomas\nLarsson, Squark, some mathematicians from Australia and I talked about\nbefore in sci.physics.research on categorical non-abelian YM and the\nrelationship between p-branes and (non-abelian) n-gerbes and related\nNA cohomology.\n\n</UL></PRE></font></td></tr></table></BODY><HTML>');"> <IMG SRC=/images/buttons/ip.gif BORDER=0 ALIGN=CENTER ALT="View this Usenet post in original ASCII form"> View this Usenet post in original ASCII form </a></div><P></jabberwocky>"Charlie Stromeyer Jr." <cstromey@hotmail.com> wrote in message news:
> Urs Schreiber <Urs.Schreiber@uni-essen.de> wrote in message news:
>
> > I have been looking at some papers by Koji Hashimoto, e.g. http://www.arxiv.org/abs/hep-th/0401043,
> > http://www.arxiv.org/abs/hep-th/0312260 concerning deformations of boundary states in order to
> > describe open string background field
> > (http://golem.ph.utexas.edu/string/archives/000381.html).
>
> Regarding the first paper, why does it not say anything about the
> relevant cohomology? The second paper is not by Hashimoto, but
> anyways, from where does the associativity of the star product in OSFT
> originate?
By coincidence, a partial answer to my question about the
associativity of the star product appeared today on hep-th in
[http://www.arxiv.org/abs/hep-th/0406109], but I still do not see yet how this approach would
be related to the relevant non-abelian (or quantum) cohomology.
Urs, since the above Hashimoto paper is about D-branes and non-abelian
YM you might want to re-read what John Baez, Aaron Bergman, Thomas
Larsson, Squark, some mathematicians from Australia and I talked about
before in sci.physics.research on categorical non-abelian YM and the
relationship between p-branes and (non-abelian) n-gerbes and related
NA cohomology.
Urs Schreiber
Jun16-04, 07:24 AM
<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no, location=no,scrollbars=yes,resizable=yes,status=no ,width=650,height=400'); newWindow.document.write('<HTML><HEAD><TITLE>Usenet ASCII</TITLE></HEAD><BODY topmargin=0 leftmargin=0 BGCOLOR=#F1F1F1><table border=0 width=625><td bgcolor=midnightblue><font color=#F1F1F1>This Usenet message\'s original ASCII form: </font></td></tr><tr><td width=449><br><br><font face=courier><UL><PRE>"Charlie Stromeyer Jr." <cstromey@hotmail.com> schrieb im Newsbeitrag\nnews:61773ed7.0406131303.481146b4-100000@posting.google.com...\n\n> I don\'t know, but perhaps if you can make your question more specific\n> we might be able to think of something.\n\nFor some reason my answer to this question does not want to disappear on\nsps. You can find it here\n\nhttp://golem.ph.utexas.edu/string/archives/000381.html#c001236\n\ninstead.\n\n\n</UL></PRE></font></td></tr></table></BODY><HTML>');"> <IMG SRC=/images/buttons/ip.gif BORDER=0 ALIGN=CENTER ALT="View this Usenet post in original ASCII form"> View this Usenet post in original ASCII form </a></div><P></jabberwocky>"Charlie Stromeyer Jr." <cstromey@hotmail.com> schrieb im Newsbeitrag
news:61773ed7.0406131303.481146b4-100000@posting.google.com...
> I don't know, but perhaps if you can make your question more specific
> we might be able to think of something.
For some reason my answer to this question does not want to disappear on
sps. You can find it here
http://golem.ph.utexas.edu/string/archives/000381.html#c001236
instead.
Urs Schreiber
Jun16-04, 07:32 AM
<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no, location=no,scrollbars=yes,resizable=yes,status=no ,width=650,height=400'); newWindow.document.write('<HTML><HEAD><TITLE>Usenet ASCII</TITLE></HEAD><BODY topmargin=0 leftmargin=0 BGCOLOR=#F1F1F1><table border=0 width=625><td bgcolor=midnightblue><font color=#F1F1F1>This Usenet message\'s original ASCII form: </font></td></tr><tr><td width=449><br><br><font face=courier><UL><PRE>On Wed, 16 Jun 2004, Urs Schreiber wrote:\n\n> "Charlie Stromeyer Jr." <cstromey@hotmail.com> schrieb im Newsbeitrag\n> news:61773ed7.0406131303.481146b4-100000@posting.google.com...\n>\n> > I don\'t know, but perhaps if you can make your question more specific\n> > we might be able to think of something.\n>\n> For some reason my answer to this question does not want to disappear on\n> sps\n\nEr, sorry, of course I meant \'does not want to appear\'. :-)\n\n</UL></PRE></font></td></tr></table></BODY><HTML>');"> <IMG SRC=/images/buttons/ip.gif BORDER=0 ALIGN=CENTER ALT="View this Usenet post in original ASCII form"> View this Usenet post in original ASCII form </a></div><P></jabberwocky>On Wed, 16 Jun 2004, Urs Schreiber wrote:
> "Charlie Stromeyer Jr." <cstromey@hotmail.com> schrieb im Newsbeitrag
> news:61773ed7.0406131303.481146b4-100000@posting.google.com...
>
> > I don't know, but perhaps if you can make your question more specific
> > we might be able to think of something.
>
> For some reason my answer to this question does not want to disappear on
> sps
Er, sorry, of course I meant 'does not want to appear'. :-)
Urs Schreiber
Jun16-04, 03:11 PM
<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no, location=no,scrollbars=yes,resizable=yes,status=no ,width=650,height=400'); newWindow.document.write('<HTML><HEAD><TITLE>Usenet ASCII</TITLE></HEAD><BODY topmargin=0 leftmargin=0 BGCOLOR=#F1F1F1><table border=0 width=625><td bgcolor=midnightblue><font color=#F1F1F1>This Usenet message\'s original ASCII form: </font></td></tr><tr><td width=449><br><br><font face=courier><UL><PRE>On Tue, 15 Jun 2004, Charlie Stromeyer Jr. wrote:\n\n> Urs, since the above Hashimoto paper is about D-branes and non-abelian\n> YM you might want to re-read what John Baez, Aaron Bergman, Thomas\n> Larsson, Squark, some mathematicians from Australia and I talked about\n> before in sci.physics.research on categorical non-abelian YM and the\n> relationship between p-branes and (non-abelian) n-gerbes and related\n> NA cohomology.\n\nCould you give a brief summary of that discusion, sketch some relevant\nideas?\n\nI haven\'t followed it in any detail, mainly because I couldn\'t understand\nit at that time. If you can tell me about a concrete relation between boundary\nstates and n-gerbes you\'ll immediately have my entire attention! :-)\n\n</UL></PRE></font></td></tr></table></BODY><HTML>');"> <IMG SRC=/images/buttons/ip.gif BORDER=0 ALIGN=CENTER ALT="View this Usenet post in original ASCII form"> View this Usenet post in original ASCII form </a></div><P></jabberwocky>On Tue, 15 Jun 2004, Charlie Stromeyer Jr. wrote:
> Urs, since the above Hashimoto paper is about D-branes and non-abelian
> YM you might want to re-read what John Baez, Aaron Bergman, Thomas
> Larsson, Squark, some mathematicians from Australia and I talked about
> before in sci.physics.research on categorical non-abelian YM and the
> relationship between p-branes and (non-abelian) n-gerbes and related
> NA cohomology.
Could you give a brief summary of that discusion, sketch some relevant
ideas?
I haven't followed it in any detail, mainly because I couldn't understand
it at that time. If you can tell me about a concrete relation between boundary
states and n-gerbes you'll immediately have my entire attention! :-)
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