Logarithmic Conformal Field Theories and Strings in Changing Backgrounds
Abstract
I review a particular class of physical applications of Logarithmic Conformal Field Theory in strings propagating in changing (not necessarily conformal) backgrounds, namely D-brane recoil in flat or time-dependent cosmological backgrounds. The role of recoil logarithmic vertex operators as non-conformal deformations, requiring in some cases Liouville dressing, is pointed out. It is also argued that, although in the case of non-supersymmetric recoil deformations the representation of target time as a Liouville zero mode may lead to non-linear quantum mechanics for stringy defects, such non-linearities disappear (or, at least, are strongly suppressed) after world-sheet supersymmetrization. A possible link is therefore suggested between (world-sheet) supersymmetry and linearity of quantum mechanics in this framework.
Cite
@article{arxiv.hep-th/0407026,
title = {Logarithmic Conformal Field Theories and Strings in Changing Backgrounds},
author = {Nick E. Mavromatos},
journal= {arXiv preprint arXiv:hep-th/0407026},
year = {2016}
}
Comments
108 pages LATEX, Review contributed to I. Kogan Memorial Volume (World Sci. to be published)