Cosmic F- and D-strings
Posted by Urs Schreiber
In the paper
Copeland, Myers, Polchinski, Cosmic F- and D-strings
the authors discuss cosmic strings and F/D-strings on the same footing. I am not sure that I completely understand how the transition from the quantum realm of the F-strings to the classical realm of cosmic strings is performed. Is it sufficient to just mumble “string-string and string-field dualities?”
For instance, when the authors say that experimental observation of cosmic strings might shed light on stringy physics, are they referring to the general “(classical) physics described by Polyakov-type actions” or do they really mean to imply that the observation of cosmic strings would tell us anything about (F-)string scale physics?
Posted at December 17, 2003 10:15 PM UTC
Re: Cosmic F- and D-strings
I’m not sure what you are surprised about. A “macroscopic” fundamental string is a string with large occupation numbers for certain string modes. That’s more-or-less exactly the situation in which one gets classical behaviour.