31 citations · 93 across the 11 of their papers we have counts for
11 papers
Intrinsic Geometry of the Stock Market from Graph Ricci Flow
Bhargavi Srinivasan
We use the discrete Ollivier-Ricci graph curvature with Ricci flow to examine the intrinsic geometry of financial markets through the empirical correlation graph of the NASDAQ 100…
Delocalizing effect of the Hubbard repulsion for electrons on a two-dimensional disordered lattice
Bhargavi Srinivasan, Giuliano Benenti, Dima L. Shepelyansky
We study numerically the ground-state properties of the repulsive Hubbard model for spin-1/2 electrons on two-dimensional lattices with disordered on-site energies. The projector q…
Current-current correlations in a CuO_3 model system
Bhargavi Srinivasan, Marie-Bernadette Lepetit
We study a 3-band extended Hubbard model on a CuO_3 system by the density matrix renormalization group (DMRG) method. Our system has geometry similar to that of a section of the Cu…
Transition to an Insulating Phase Induced by Attractive Interactions in the Disordered Three-Dimensional Hubbard Model
Bhargavi Srinivasan, Giuliano Benenti, Dima L. Shepelyansky
We study numerically the interplay of disorder and attractive interactions for spin-1/2 fermions in the three-dimensional Hubbard model. The results obtained by projector quantum M…
Disorder and superconductivity : a new phase of bi-particle localized states
Bhargavi Srinivasan, Dima L. Shepelyansky
We study the two-dimensional, disordered, attractive Hubbard model by the projector quantum Monte Carlo method and Bogoliubov - de Gennes mean-field theory. Our results for the gro…
Ground state properties of the 2D disordered Hubbard model
Gaetan Caldara, Bhargavi Srinivasan, Dima Shepelyansky
We study the ground state of the two-dimensional (2D) disordered Hubbard model by means of the projector quantum Monte Carlo (PQMC) method. This approach allows us to investigate t…