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Braunstein–Ghosh–Severini entropy

In network theory, the Braunstein–Ghosh–Severini entropy (BGS entropy) of a network is the von Neumann entropy of a density matrix given by a normalized Laplacian matrix of the network. This definition of entropy does not have a clear thermodynamical interpretation. The BGS entropy has been used in the context of quantum gravity.

References

(2006). "The Laplacian of a Graph as a Density Matrix: A Basic Combinatorial Approach to Separability of Mixed States". Springer Science and Business Media LLC.
(13 October 2009). "Entropy measures for networks: Toward an information theory of complex topologies". American Physical Society (APS).
(24 February 2010). "Single particle in quantum gravity and Braunstein-Ghosh-Severini entropy of a spin network". Physical Review D.

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quantum-mechanical-entropy

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