Theory Seminar DATE: 2005-07-27 11:00 - PLACE: Hon-kan Rm. 220 TITLE: Topological B-model and c=1 string theory CONTACT: Tango SPEAKER: Prof. Seungjoon Hyun  (Yonsei University) LANGUAGE: English ABSTRACT: We study the topological B-model on a deformed Z2 orbifolded conifold by investigating variation of complex structures via quantum Kodaira-Spencer theories. The fermionic/brane formulation together with systematic utilization of symmetries of the geometry gives rise to a free fermion realization of the amplitudes. We derive Ward identities which solve the perturbed free energy exactly. We also obtain the corresponding Kontsevich-like matrix model. All these confirm the recent conjecture on the connection of the theory with c=1 type 0A string theory compactified at the radius R=√α'/2. Back