%0 Journal Article %T c-map as c=1 string %+ Laboratoire Charles Coulomb (L2C) %A Alexandrov, Sergey %Z 19 pages, 2 figures %< avec comité de lecture %Z L2C:12-008 %@ 0550-3213 %J Nuclear Physics B %I Elsevier %V 863 %N 1 %P 329-346 %8 2012-05-17 %D 2012 %Z 1201.4392 %R 10.1016/j.nuclphysb.2012.05.018 %Z Physics [physics]/High Energy Physics - Theory [hep-th]Journal articles %X We show the existence of a duality between the c-map space describing the universal hypermultiplet at tree level and the matrix model description of two-dimensional string theory compactified at a self-dual radius and perturbed by a sine-Liouville potential. It appears as a particular case of a general relation between the twistor description of four-dimensional quaternionic geometries and the Lax formalism for Toda hierarchy. Furthermore, we give an evidence that the instanton corrections to the c-map metric coming from NS5-branes can be encoded into the Baker-Akhiezer function of the integrable hierarchy. %G English %L hal-00663227 %U https://hal.science/hal-00663227 %~ CNRS %~ L2C %~ MIPS %~ UNIV-MONTPELLIER %~ UM-2015-2021