72 citations · 477 across the 37 of their papers we have counts for
37 papers
Unitarily inequivalent local and global Fourier transforms in multipartite quantum systems
C. Lei, A. Vourdas
A multipartite system comprised of subsystems, each of which is described with `local variables' in and with a -dimensional Hilbert space , is conside…
Markov chains with doubly stochastic transition matrices and application to a sequence of non-selective quantum measurements
A. Vourdas
A time-dependent finite-state Markov chain that uses doubly stochastic transition matrices, is considered. Entropic quantities that describe the randomness of the probability vecto…
Multipartite quantum systems: an approach based on Markov matrices and the Gini index
A. Vourdas
An expansion of row Markov matrices in terms of matrices related to permutations with repetitions, is introduced.It generalises the Birkhoff-von Neumann expansion of doubly stochas…
Uncertainty relations in terms of the Gini index for finite quantum systems
A. Vourdas
Lorenz values and the Gini index are popular quantities in Mathematical Economics, and are used here in the context of quantum systems with finite-dimensional Hilbert space. They q…
Equivalence classes of coherent projectors in a Hilbert space with prime dimension: Q functions and their Gini index
A. Vourdas
Coherent subspaces spanned by a finite number of coherent states are introduced, in a quantum system with Hilbert space that has odd prime dimension . The set of all coherent su…
The Choquet integral as an approximation to density matrices with incomplete information
A. Vourdas
A total set of states and the corresponding projectors are considered, in a quantum system with -dimensional Hilbert space . A…