This book introduces an interesting and alternative way to design absorbing boundary conditions (ABCs) for quantum wave equations, basically the nonlinear Schrödinger equation. The focus of this book is the application of the phase space filter approach to derive accurate radiation conditions for Schrödinger equations.Researchers who are interested in partial differential equations and mathematical physics might find this book appealing.

Avy Soffer is a professor at the Department of Mathematics, Rutgers University. He obtained his PhD at Tel-Aviv University in Mathematical-Physics in 1984. He was a Sloan fellow in 1988, ICM invited speaker in 2006, and AMS Fellow in 2015. Chris Stucchio is a product-focused data science and engineering researcher. He obtained his PhD at Rutgers University. MinhBinh Tran is a faculty in the mathematics department of Texas A&M University, USA. He obtained a PhD in applied mathematics at Université Sorbonne Paris Nord, France. He was a recipient of the NSF CAREER Award in 2021 and was a Humboldt Fellow in 2021.