# Perfect State Transfer on gcd-graphs

@inproceedings{Pal2016PerfectST,
title={Perfect State Transfer on gcd-graphs},
author={Hiranmoy Pal and Bikash Bhattacharjya},
year={2016}
}
Let $G$ be a graph with adjacency matrix $A$. The transition matrix of $G$ is denoted by $H(t)$ and it is defined by $H(t):=\exp{\left(itA\right)},\;t\in\mathbb{R}.$ The graph $G$ has perfect state transfer (PST) from a vertex $u$ to another vertex $v$ if there exist $\tau\left(\neq0\right)\in\mathbb{R}$ such that the $uv$-th entry of $H(\tau)$ has unit modulus. In case when $u=v$, we say that $G$ is periodic at the vertex $u$ at time $\tau$. The graph $G$ is said to be periodic if it is… CONTINUE READING

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