## Interacting field theories from free ones?

<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>Hi,\n\n\nI started thinking about wether it is possible to generate interaction\nin an effective field theory, when one assumes to have a free one in a\nspace with additional higher, compactified dimensions through\nintegrating out the contributions in the compactified dimension in the\npath integral or through some process of not lookin at the excitations\nin the additional dimension. Does anybody know wether this case is\nalready looked at in the literature?\n\n\nRené.\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">&nbsp;&nbsp;View this Usenet post in original ASCII form </a></div><P></jabberwocky>Hi,

I started thinking about wether it is possible to generate interaction
in an effective field theory, when one assumes to have a free one in a
space with additional higher, compactified dimensions through
integrating out the contributions in the compactified dimension in the
path integral or through some process of not lookin at the excitations
in the additional dimension. Does anybody know wether this case is
already looked at in the literature?

René.



On Mon, 11 Apr 2005 18:52:16 $+0000$ (UTC), meyr2@web.de wrote: > Hi, > > > I started thinking about wether it is possible to generate interaction > in an effective field theory, when one assumes to have a free one in a > space with additional higher, compactified dimensions through > integrating out the contributions in the compactified dimension in the > path integral or through some process of not lookin at the excitations > in the additional dimension. Does anybody know wether this case is > already looked at in the literature? I cannot see how this is supposed to work. My guess would be that you obtain new free theories from the higher dimensional ones. Robert -- ..oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.o Oo.oOo.oO Robert C. Helling School of Science and Engineering International University Bremen print "Just another Phone: $+49 421-200$ 3574 stupid $.sig\n";$ http://www.aei-potsdam.mpg.de/~helling