Complexity from the reduced density matrix: a new diagnostic for chaos
Sign Up to like & getrecommendations! Published in 2021 at "Journal of High Energy Physics"
DOI: 10.1007/jhep10(2021)028
Abstract: Abstract We investigate circuit complexity to characterize chaos in multiparticle quantum systems. In the process, we take a stride to analyze open quantum systems by using complexity. We propose a new diagnostic of quantum chaos… read more here.
Keywords: new diagnostic; diagnostic chaos; chaos; density matrix ... See more keywords
Reduced Density of DISC1 Expressing Astrocytes in the Dentate Gyrus but not in the Subventricular Zone in Schizophrenia
Sign Up to like & getrecommendations! Published in 2018 at "Neuropsychopharmacology"
DOI: 10.1038/npp.2017.242
Abstract: Reduced Density of DISC1 Expressing Astrocytes in the Dentate Gyrus but not in the Subventricular Zone in Schizophrenia read more here.
Keywords: expressing astrocytes; disc1 expressing; dentate gyrus; reduced density ... See more keywords
Combining density-based dynamical correlation with a reduced-density-matrix strong-correlation description
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review A"
DOI: 10.1103/physreva.102.032815
Abstract: A combined density and first-order reduced-density-matrix (1RDM) functional method is proposed for the calculation of potential energy curves (PECs) of molecular multibond dissociation. Its 1RDM functional part, a pair density functional, efficiently approximates the ab… read more here.
Keywords: method; density; correlation; reduced density ... See more keywords
Unitary circuits of finite depth and infinite width from quantum channels
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.100.064309
Abstract: We introduce an approach to compute reduced density matrices for local quantum unitary circuits of finite depth and infinite width. Suppose the time-evolved state under the circuit is a matrix-product state with bond dimension $D$;… read more here.
Keywords: circuits finite; unitary circuits; finite depth; depth infinite ... See more keywords
Reduced density matrix functional theory for superconductors
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.224502
Abstract: We present an ab initio theory for superconductors, based on a unique mapping between the statistical density operator at equilibrium, on the one hand, and the corresponding one-body reduced density matrix $\ensuremath{\gamma}$ and the anomalous… read more here.
Keywords: theory; density matrix; theory superconductors; density ... See more keywords