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<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> > P. Grassi & L. Tamassia\n> > Vertex Operators for Closed Superstrings\n> > hep-th/0405072\n\nHi Urs, the only important work I must get done over the next few\nweeks is with advising an MIT engineer about math and economics. This\nmeans that I will have some time to think about your questions.\n\nFor a newsgroup named "sci.physics.strings" there seems to be few\nstring theorists posting here. Perhaps you might want to consider\nemailing the string theory community to let them know about this\nnewsgroup, or have you already scared them away as they run for cover\nfrom all the flying intellectual bullets that are your questions ?-)\n\n> Fine. What I don\'t see yet is how precisely this is related\n> to the usual RNS and/or GS formalism. Can the pure spinor\n> formalism be derived somehow from either one o of these?\n\nYes, and for more clarification also see the earlier paper\n(hep-th/0405007).\n\n> Can one for instance re-express the pure spinor ghosts\n> in terms of the usual reparemeterization super ghosts?\n\nI am not sure I understand what you are asking. In the Berkovits\napproach there are pure spinors as ghosts but there are no worldsheet\n(super)diffeomorphism ghosts.\n\nYou may also want to look at some of the techniques that have been\nused for Type 0 strings because these strings are described by N=1\nsusy worldsheet theories (hep-th/0308123 and 0309028).\n\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>Urs Schreiber <Urs.Schreiber@uni-essen.de> wrote in message news:
>
> > P. Grassi & L. Tamassia
> > Vertex Operators for Closed Superstrings
> > http://www.arxiv.org/abs/hep-th/0405072
Hi Urs, the only important work I must get done over the next few
weeks is with advising an MIT engineer about math and economics. This
means that I will have some time to think about your questions.
For a newsgroup named "sci.physics.strings" there seems to be few
string theorists posting here. Perhaps you might want to consider
emailing the string theory community to let them know about this
newsgroup, or have you already scared them away as they run for cover
from all the flying intellectual bullets that are your questions ?-)
> Fine. What I don't see yet is how precisely this is related
> to the usual RNS [itex]and/or GS[/itex] formalism. Can the pure spinor
> formalism be derived somehow from either one o of these?
Yes, and for more clarification also see the earlier paper
(http://www.arxiv.org/abs/hep-th/0405007).
> Can one for instance re-express the pure spinor ghosts
> in terms of the usual reparemeterization super ghosts?
I am not sure I understand what you are asking. In the Berkovits
approach there are pure spinors as ghosts but there are no worldsheet
(super)diffeomorphism ghosts.
You may also want to look at some of the techniques that have been
used for Type strings because these strings are described by N=1
susy worldsheet theories (http://www.arxiv.org/abs/hep-th/0308123 and 0309028).
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