jakks
Oct23-04, 06:41 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>Hi guys,\n\nIs the xpectation value of the dilaton always just the cosmological constant?\n\n[Moderator\'s note: Sorry but the expectation value of the dilaton is the\nlogarithm of the coupling constant, which is something very different\nthan a cosmological constant. In natural units, for example, it is\nroughly 120 orders of magnitude bigger. A coupling constant is a number\ncomparable to one that says how often strings interact, while the\ncosmological constant is the density of energy in vacuum. LM]\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>Hi guys,
Is the xpectation value of the dilaton always just the cosmological constant?
[Moderator's note: Sorry but the expectation value of the dilaton is the
logarithm of the coupling constant, which is something very different
than a cosmological constant. In natural units, for example, it is
roughly 120 orders of magnitude bigger. A coupling constant is a number
comparable to one that says how often strings interact, while the
cosmological constant is the density of energy in vacuum. LM]
Is the xpectation value of the dilaton always just the cosmological constant?
[Moderator's note: Sorry but the expectation value of the dilaton is the
logarithm of the coupling constant, which is something very different
than a cosmological constant. In natural units, for example, it is
roughly 120 orders of magnitude bigger. A coupling constant is a number
comparable to one that says how often strings interact, while the
cosmological constant is the density of energy in vacuum. LM]