Gabriel Coutinho, Emanuel Juliano, Thomás Jung Spier
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No perfect state transfer in trees with more than 3 vertices
We prove that the only trees that admit perfect state transfer according to the adjacency matrix model are and . This answers a question first asked by Godsil in 2012 and proves a conjecture by Coutinho and Liu from 2015.
期刊介绍:
The Journal of Combinatorial Theory publishes original mathematical research dealing with theoretical and physical aspects of the study of finite and discrete structures in all branches of science. Series B is concerned primarily with graph theory and matroid theory and is a valuable tool for mathematicians and computer scientists.