Running of Gravitational Constant? [Archive]

lost.and.lonely.physicist@gmail.com

Mar7-05, 03:48 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>Reading the "Renormalization" thread makes me wonder if G_N, Newton\'s\ngravitational constant also runs with energy, like all coupling\nconstants in the standard model.\n\nCould the accelerating expansion of the universe be related to this\nrunning of the coupling constant of gravity? Has anyone computed the\nrunning of G_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>Reading the "Renormalization" thread makes me wonder if G_N, Newton's
gravitational constant also runs with energy, like all coupling
constants in the standard model.

Could the accelerating expansion of the universe be related to this
running of the coupling constant of gravity? Has anyone computed the
running of G_N?

Arnold Neumaier

Mar8-05, 12:48 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>lost.and.lonely.physicist@gmail.com wrote:\n> Reading the "Renormalization" thread makes me wonder if G_N, Newton\'s\n> gravitational constant also runs with energy, like all coupling\n> constants in the standard model.\n\nIt would, in a quantum gravity theory.\n\n\n> Could the accelerating expansion of the universe be related to this\n> running of the coupling constant of gravity? Has anyone computed the\n> running of G_N?\n\nC.P. Burgess,\nQuantum Gravity in Everyday Life:\nGeneral Relativity as an Effective Field Theory\nLiving Reviews in Relativity 7 (2004), 5\nhttp://www.livingreviews.org/lrr-2004-5\n\nArnold Neumaier\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>lost.and.lonely.physicist@gmail.com wrote:
> Reading the "Renormalization" thread makes me wonder if G_N, Newton's
> gravitational constant also runs with energy, like all coupling
> constants in the standard model.

It would, in a quantum gravity theory.

> Could the accelerating expansion of the universe be related to this
> running of the coupling constant of gravity? Has anyone computed the
> running of G_N?

C.P. Burgess,
Quantum Gravity in Everyday Life:
General Relativity as an Effective Field Theory
Living Reviews in Relativity 7 (2004), 5
http://www.livingreviews.org/lrr-2004-5

Arnold Neumaier

lost.and.lonely.physicist@gmail.com

Mar16-05, 02:05 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>Can we use this effective field theory of gravity to describe cosmology?\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>Can we use this effective field theory of gravity to describe cosmology?

Arnold Neumaier

Mar18-05, 12:29 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>lost.and.lonely.physicist@gmail.com wrote:\n> Can we use this effective field theory of gravity to describe cosmology?\n>\n\nPlease quote some context, next time.\n\nThe corrections are too small to have any effect on cosmology except\nfor the very beginning where models (befor and up to inflation)\nare tenative anyway.\n\n\nArnold Neumaier\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>lost.and.lonely.physicist@gmail.com wrote:
> Can we use this effective field theory of gravity to describe cosmology?
>

Please quote some context, next time.

The corrections are too small to have any effect on cosmology except
for the very beginning where models (befor and up to inflation)
are tenative anyway.

Arnold Neumaier