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Explore a comprehensive lecture on the Lorentzian IKKT matrix model with mass term as a nonperturbative formulation of superstring theory. Delve into the Workshop on "Large-N Matrix Models and Emergent Geometry" held at the Erwin Schrödinger International Institute for Mathematics and Physics. Examine the challenges of the Lorentzian version compared to the Euclidean version, and understand the proposed Lorentz invariant mass term as a regularization method. Investigate the implications of different signs for this term, leading to either an equivalent Euclidean model or a genuinely Lorentzian model. Analyze the existence of nontrivial classical solutions in the genuinely Lorentzian model and their impact on partition function divergence. Review Monte Carlo simulation results and 1/D expansion for the N=2 bosonic model. Discuss the potential emergence of (3+1)D expanding space-time at large N with supersymmetry. Gain insights into cutting-edge research in theoretical physics and string theory through this 51-minute talk.
