Abstract
Large N matrix models modified by terms of the form g(Trn)2 generate random surfaces which touch at isolated points. Matrix model results indicate that, as g is increased to a special value gt, the string susceptibility exponent suddenly jumps from its conventional value to /(-1). We study this effect in Liouville gravity and attribute it to a change of the interaction term from Oe+ for g<gt to Oe- for g=gt (+ and - are the two roots of the conformal invariance condition for the Liouville dressing of a matter operator O). Thus, the new critical behavior is explained by the unconventional branch of Liouville dressing in the action.
Original language | English (US) |
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Pages (from-to) | 1836-1841 |
Number of pages | 6 |
Journal | Physical Review D |
Volume | 51 |
Issue number | 4 |
DOIs | |
State | Published - 1995 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)