37 citations · 133 across the 26 of their papers we have counts for
27 papers
Sign problem and criticality in world-line quantum Monte Carlo methods
Rubem Mondaini, Richard T. Scalettar
Discussions of the sign problem usually focus on its role as the primary limitation of the applicability of quantum Monte Carlo methods for reliably solving quantum many-body model…
Sign-problem-resilient singular-value probe in determinant quantum Monte Carlo
Wen Chen, Rubem Mondaini
The sign problem limits determinant quantum Monte Carlo studies of strongly correlated fermion systems. In the spin-channel Hubbard-Stratonovich decoupling, spin correlations are e…
Superfluidity without charge order in the attractive Hubbard model on the kagome lattice
Xiaodong Jin, Yingping Mou, Rubem Mondaini
Using auxiliary-field quantum Monte Carlo simulations, we study the zero-temperature attractive Hubbard model on the kagome lattice at various relevant electronic fillings. The low…
Enhancement of charge correlations and real-space topological marker on an interacting non-Hermitian Su-Schrieffer-Heeger model
Sebastião dos A. Sousa-Júnior, Pedro B. Melo, Rubem Mondaini +2
We investigate the interacting non-Hermitian Su-Schrieffer-Heeger (SSH) model, focusing on the interplay between topology and charge ordering. Using a real-space topological marker…
The Two Orbital, Interacting Hatano-Nelson Model
Jonah Huang, Rubem Mondaini, Nancy Aggarwal +1
The single orbital, one-dimensional, Hatano-Nelson Hamiltonian provides deep insight into the physics of non-Hermiticity, resulting from asymmetric left/right hopping, and its conn…
Real-space topology and charge order in the Haldane-Holstein Model
Sebastião dos Anjos Sousa-Júnior, Julián Faúndez, Tarik P. Cysne +2
We study the half-filled Haldane-Holstein model, where a paradigmatic Chern insulator is coupled to fully dynamical phonons, and provide an unbiased characterization of how retarde…
Sign-Resolved Statistics and the Origin of Bias in Quantum Monte Carlo
Ryan Larson, Rubem Mondaini, Richard T. Scalettar
Quantum simulations are a powerful tool for exploring strongly correlated many-body phenomena. Yet, their reach is limited by the fermion sign problem, which causes configuration w…
Spin-orbit coupled periodic Anderson model: Kondo-Dirac semimetal and orbital-selective antiferromagnetic semimetal
Sebastião dos Anjos Sousa-Júnior, Julián Faúndez, Rubem Mondaini
We investigate the periodic Anderson model composed of an itinerant -band and a strongly localized -band, featuring on-site electron-electron interactions in the -orbitals…
Fock space prethermalization and time-crystalline order on a quantum processor
Zehang Bao, Zitian Zhu, Yang-Ren Liu +31
Periodically driven quantum many-body systems exhibit a wide variety of exotic nonequilibrium phenomena and provide a promising pathway for quantum applications. A fundamental chal…
From Bell Products to Greenberger-Horne-Zeilinger states: Quantum Memories via emergent Hamiltonians
Anubhab Sur, Qiujiang Guo, Rubem Mondaini
With the advent of exquisite quantum emulators, storing highly entangled many-body states becomes essential. While entanglement typically builds over time when evolving a quantum s…
Photodynamic melting of phase-reversed charge stripes and enhanced condensation
Jianhao Sun, Richard T. Scalettar, Rubem Mondaini
The interplay between charge stripes and pairing has long been a subject of scrutiny in a broad class of unconventional superconductors, as in some cases it is unclear whether this…
Non-Hermitian Haldane-Hubbard model: Effective description of an open system with balanced gain and loss
Tian-Cheng Yi, Rubem Mondaini
We study the correlated Haldane-Hubbard model with single-particle gain and loss, focusing on its non-Hermitian phase diagram and the ensuing non-unitary dynamic properties. The in…
Single-site entanglement as a marker for quantum phase transitions at non-zero temperatures
Willdauany C. de Freitas Silva, Andressa R. Medeiros-Silva, Rubem Mondaini +2
Entanglement has been widely investigated in condensed matter systems since they are considered good candidates for developing quantum technologies. Additionally, entanglement is a…
Observation of Quantum Darwinism and the Origin of Classicality with Superconducting Circuits
Zitian Zhu, Kiera Salice, Akram Touil +9
The transition from quantum to classical behavior is a central question in modern physics. How can we rationalize everyday classical observations from an inherently quantum world?…
Onset of Quantum Chaos and Ergodicity in Spin Systems with Highly Degenerate Hilbert Spaces
Mahmoud Abdelshafy, Rubem Mondaini, Marcos Rigol
We show that in systems with highly degenerate energy spectra, such as the 2D transverse-field Ising model (2DTFIM) in the strong-field limit, quantum chaos can emerge in finite sy…
Weyl semimetallic, Néel, spiral, and vortex states in the Rashba-Hubbard model
Sebastião dos Anjos Sousa-Júnior, Rubem Mondaini
We investigate the evolution of magnetic phases in the Hubbard model under strong Rashba spin-orbit coupling on a square lattice. By using Lanczos exact diagonalization and determi…
Quantum highway: Observation of minimal and maximal speed limits for few and many-body states
Zitian Zhu, Lei Gao, Zehang Bao +30
Tracking the time evolution of a quantum state allows one to verify the thermalization rate or the propagation speed of correlations in generic quantum systems. Inspired by the ene…
Quantum State Transfer in Interacting, Multiple-Excitation Systems
Alexander Yue, Rubem Mondaini, Qiujiang Guo +1
Quantum state transfer (QST) describes the coherent passage of quantum information from one node in a network to another. Experiments on QST span a diverse set of platforms and cur…
Stripes and the Emergence of Charge -phase Shifts in Isotropically Paired Systems
Jianhao Sun, Tao Ying, Richard T. Scalettar +1
The interplay of spin and motional degrees of freedom forms a key element in explaining stripe formation accompanied by sublattice reversal of local antiferromagnetic ordering in i…
Enhanced quantum state transfer: Circumventing quantum chaotic behavior
Liang Xiang, Jiachen Chen, Zitian Zhu +16
The ability to realize high-fidelity quantum communication is one of the many facets required to build generic quantum computing devices. In addition to quantum processing, sensing…
Two-dimensional polarized superfluids under the prism of the fermion sign problem
Tian-Cheng Yi, Song Cheng, Ian Pilé +2
Understanding if attractive fermions in an unbalanced occupation of its flavors can give rise to a superfluid state in two dimensions (2D), realizing the Fulde-Ferrel-Larkin-Ovchin…
Multifractality and pre-thermalization in the quasi-periodically kicked Aubry-André-Harper model
Wen Chen, Pedro D. Sacramento, Rubem Mondaini
In a class of periodically driven systems, multifractal states in non-equilibrium conditions and robustness of dynamical localization when the driving is made aperiodic have receiv…
Phase transitions in the Haldane-Hubbard model
Wan-Xiu He, Rubem Mondaini, Hong-Gang Luo +2
The Haldane-Hubbard model is a prime example of the combined effects of band topology and electronic interaction. We revisit its spinful phase diagram at half-filling as a consensu…
Topological Anderson insulating phases in the interacting Haldane model
Joao S. Silva, Eduardo V. Castro, Rubem Mondaini +2
We analyze the influence of disorder and strong correlations on the topology in two dimensional Chern insulators. A mean field calculation in the half-filled Haldane model with ext…