3 papers
math.FA2019
The order- minors of certain matrices
Priyabrata Bag, Santanu Dey, Masaru Nagisa +1
We determine sufficient conditions for certain classes of matrices to have all order- minors to be nonzero. For a special class of matrices…
quant-ph2018
Comparing Geometric Discord and Negativity for Bipartite States
Priyabrata Bag, Santanu Dey, Hiroyuki Osaka
The geometric discord of a state is a measure of the quantumness of the state and the negativity is a measure of the entanglement of a state. It was pro…
quant-ph2018
A Subspace of Maximal Dimension with Bounded Schmidt Rank
Priyabrata Bag, Santanu Dey
We study Schmidt rank for a vector (i.e., a pure state) and Schmidt number for a mixed state which are entanglement measures. We show that if a subspace of a certain bipartite syst…