Alladi Ramakrishnan Hall

Review of ``Average Entropy of a subsystem" (by Don Page)

Arpan Kundu

IMSc

If a quantum system of Hilbert space dimension mn is in a random pure
state, the average entropy of a subsystem of dimension m ≤ n is 
conjectured and evaluated in large m, n limit. It is shown that
there is less than one-half unit of information, on average, in the smaller
subsystem of a total system in a random pure state.