Question about Heisenberg spin chain [Archive]

Xi Yin

Nov19-04, 01:26 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>Is there a good reference that explains the continuum limit of XXX and XYZ\nspin (1/2) chains? I\'ve heard of the statement that XXX spin chain leads\nto SU(2) WZW model and XYZ spin chain leads to sine-Gordon model. Are\nthese two related in someway?\n\nThanks,\nXi\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>Is there a good reference that explains the continuum limit of XXX and XYZ
spin (1/2) chains? I've heard of the statement that XXX spin chain leads
to SU(2) WZW model and XYZ spin chain leads to sine-Gordon model. Are
these two related in someway?

Thanks,
\Xi

Kwok Man Hui

Nov21-04, 02:51 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>I haven\'t heard of what you asked. Would you explain more on what are XXX\nand XYZ spin chain? How can I look up some reference on spin chain? The\nArchive website?\n\nCharles Hui\n\n\nOn Fri, 19 Nov 2004, Xi Yin wrote:\n\n> Is there a good reference that explains the continuum limit of XXX and XYZ\n> spin (1/2) chains? I\'ve heard of the statement that XXX spin chain leads\n> to SU(2) WZW model and XYZ spin chain leads to sine-Gordon model. Are\n> these two related in someway?\n>\n> Thanks,\n> Xi\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>I haven't heard of what you asked. Would you explain more on what are XXX
and XYZ spin chain? How can I look up some reference on spin chain? The
Archive website?

Charles Hui

On Fri, 19 Nov 2004, \Xi Yin wrote:

> Is there a good reference that explains the continuum limit of XXX and XYZ
> spin (1/2) chains? I've heard of the statement that XXX spin chain leads
> to SU(2) WZW model and XYZ spin chain leads to sine-Gordon model. Are
> these two related in someway?
>
> Thanks,
> \Xi
>
>