9 citations · 9 across the 5 of their papers we have counts for
5 papers
Ground-State Phase Diagram, Higher-Winding Topology, and Lifshitz Criticality in an Anisotropic Four-Spin XX Chain
Mohammad Abbasi, Faraz Valeh, Saeed Mahdavifar
We investigate the quantum critical and topological properties of a spin- XX chain with anisotropic four-spin cluster interactions in a transverse magnetic field. The interpla…
Fermi-Point Topology Determines Emergent Conformal Criticality in Extended Quantum Spin Chains
Mohammad Abbasi, Saeed Mahdavifar
Quantum criticality in one-dimensional quantum systems is characterized by emergent conformal field theories (CFTs), whose central charge counts independent gapless degrees of free…
Spin squeezing: Thermal behavior and distribution on excited states
Saeed Mahdavifar, Hadi Cheraghi, Kourosh Afrousheh
We investigate the spin-squeezing behavior under thermal effects in a one-dimensional transverse field XY model with spin-1/2. The exact solution of the model helps us to compute t…
Spin-1/2 XX chains with modulated Gamma interaction
M. Abbasi, S. Mahdavifar, M. Motamedifar
We study the spin-1/2 XX chain with a modulated Gamma interaction (GI), which results from the superposition of uniform and staggered Gamma terms. We diagonalize the Hamiltonian of…
Electron screening and strength of long-range Coulomb interactions in phosphorene: From bulk to nanoribbon
Farshad Bagherpour, Saeed Mahdavifar, Elham Hosseini Lapasar +1
Experimental observations of anisotropic tightly bound excitons in black phosphorene, and correlated phenomena such as room temperature magnetically active edges in phosphorene nan…