Half-space last passage percolation with inhomogeneous first row

Abstract: We consider exponential last passage percolation in half-space with a deterministic first row. This model corresponds to a version of TASEP in half-space in which particles enter at the origin and are restricted by a moving wall. We determine the possible limiting distributions of rescaled last passage times depending on the boundary strength and the choice of the wall. As key inputs to our analysis, we establish several results for point-to-point half-space last passage times, including upper tail bounds, weak convergence, and bounds on the probabilities that geodesics touch the diagonal for certain start and end points.