114 citations · 450 across the 25 of their papers we have counts for
6 papers · 1 filter
The two-particle density matrix of a Luttinger liquid
Harini Radhakrishnan, Matthias Thamm, Hatem Barghathi +2
Two-particle coherence is the first level of the reduced-density-matrix hierarchy that contains correlations inaccessible to single-particle observables, yet analytic two-particle…
Detection of a Rényi Index Dependent Transition in Entanglement Entropy Scaling
Hatem Barghathi, Adrian Del Maestro
The scaling of entanglement with subsystem size encodes key information about phases and criticality, but the von Neumann entropy is costly to access in experiments and simulations…
Disentangling the Physics of the Attractive Hubbard Model via the Accessible and Symmetry-Resolved Entanglement Entropies
Tong Shen, Hatem Barghathi, Adrian Del Maestro +1
The complicated ways in which electrons interact in many-body systems such as molecules and materials have long been viewed through the lens of local electron correlation and assoc…
A Stable, Recursive Auxiliary Field Quantum Monte Carlo Algorithm in the Canonical Ensemble: Applications to Thermometry and the Hubbard Model
Tong Shen, Hatem Barghathi, Jiangyong Yu +2
Many experimentally-accessible, finite-sized interacting quantum systems are most appropriately described by the canonical ensemble of statistical mechanics. Conventional numerical…
Strong-randomness phenomena in quantum Ashkin-Teller models
Hatem Barghathi, Fawaz Hrahsheh, José A. Hoyos +2
The -color quantum Ashkin-Teller spin chain is a prototypical model for the study of strong-randomness phenomena at first-order and continuous quantum phase transitions. In this…
Evidence for power-law Griffiths singularities in a layered Heisenberg magnet
Fawaz Hrahsheh, Hatem Barghathi, Priyanka Mohan +2
We study the ferromagnetic phase transition in a randomly layered Heisenberg model. A recent strong-disorder renormalization group approach [Phys. Rev. B 81, 144407 (2010)] predict…