132 citations · 1k across the 39 of their papers we have counts for
40 papers
Excitonic Stripe Order in the Two-Orbital Hubbard-Kanamori Model
Rafael D. Soares, Luke Staszewski, Chunhan Feng +1
Excitonic condensation and stripe formation are two distinct manifestations of electronic correlations. While excitonic order naturally arises in multi-orbital systems, stripe orde…
Electronic Green's function across the pseudogap to stripe transition in the -- model
Martin Ulaga, Aritra Sinha, Alexander Wietek
Superconducting domes in strongly correlated electronic systems are often accompanied by charge density waves and peculiar features in the electronic structure. The appearance of a…
Incommensurate Spin-Density Waves in a Frustrated Maple-Leaf Lattice Ferromagnet
Paul L. Ebert, Yasir Iqbal, Alexander Wietek
We study how ferromagnetism breaks down in the spin- nearest-neighbor Heisenberg model on the maple-leaf lattice with ferromagnetic and antiferromagnetic ,…
Evolution of superconductivity from charge clusters to stripes in the -- model
Aritra Sinha, Hannes Karlsson, Martin Ulaga +1
Competition and coexistence of charge orders and superconductivity are hallmarks in many strongly correlated electron systems. Here, we unravel the precise role of charge fluctuati…
Cooper Condensation and Pair Wave Functions in Strongly Correlated Electrons
Hannes Karlsson, Johannes S. Hofmann, Alexander Wietek
Identifying superconducting states of matter without prior assumptions is a central challenge in strongly correlated electron systems. We introduce a canonical framework for diagno…
Field-induced states and thermodynamics of the frustrated Heisenberg antiferromagnet on a square lattice
Andreas Honecker, M. E. Zhitomirsky, Alexander Wietek +1
We investigate the ground-state and finite-temperature properties of the - Heisenberg antiferromagnet on the square lattice in the presence of an external magnetic field.…
Thermodynamics of the Heisenberg antiferromagnet on the maple-leaf lattice
Robin Schäfer, Paul L. Ebert, Noah Hassan +3
We study the Heisenberg antiferromagnet on the maple-leaf lattice using several numerical approaches, focusing on the numerical linked-cluster expansion (NLCE), which exhibits an u…
Krylov space dynamics of ergodic and dynamically frozen Floquet systems
Luke Staszewski, Asmi Haldar, Pieter W. Claeys +1
In isolated quantum many-body systems periodically driven in time, the asymptotic dynamics at late times can exhibit distinct behavior such as thermalization or dynamical freezing.…
Ab initio spin Hamiltonians and magnetism of Ce and Yb triangular-lattice compounds
Leonid V. Pourovskii, Rafael D. Soares, Alexander Wietek
We calculate the crystal-field splitting, ground-state Kramers doublet and intersite exchange interactions within the ground-state doublet manifold using an ab initio Hubbard-I bas…
Superfluid dome in the spatially modulated two-dimensional XY model
Feng-Feng Song, Aditya Chugh, Hanggai Nuomin +2
In strongly correlated electron systems, superconductivity and charge density waves often coexist in close proximity, suggesting a deeper relationship between these competing phase…
XDiag: Exact Diagonalization for Quantum Many-Body Systems
Alexander Wietek, Luke Staszewski, Martin Ulaga +6
Exact diagonalization (ED) is a cornerstone technique in quantum many-body physics, enabling precise solutions to the Schrödinger equation for interacting quantum systems. Despite…
Observation of emergent scaling of spin-charge correlations at the onset of the pseudogap
Thomas Chalopin, Petar Bojović, Si Wang +12
In strongly correlated materials, interacting electrons are entangled and form collective quantum states, resulting in rich low-temperature phase diagrams. Notable examples include…
Forestalled Phase Separation as the Precursor to Stripe Order
Aritra Sinha, Alexander Wietek
Stripe order is a prominent feature in the phase diagram of the high-temperature cuprate superconductors. It has been confirmed as the lowest-energy state of the two-dimensional Fe…
Quench dynamics of stripes and phase separation in the two-dimensional - model
Luke Staszewski, Alexander Wietek
We investigate the fundamental dynamical process of an initial quench of the chemical potential of the two-dimensional - model. Depending on the ground state phase, sharply d…
Dynamical freezing in the thermodynamic limit: the strongly driven ensemble
Asmi Haldar, Anirban Das, Sagnik Chaudhuri +5
The ergodicity postulate, a foundational pillar of Gibbsian statistical mechanics predicts that a periodically driven (Floquet) system in the absence of any conservation law heats…
Anomalous thermal broadening in the Shastry-Sutherland model and SrCuBO
Zhenjiu Wang, Paul McClarty, Dobromila Dankova +2
The quantum magnet SrCuBO and its remarkably accurate theoretical description, the spin- Shastry-Sutherland model, host a variety of intriguing phenomena such as a…
Spectroscopy and complex-time correlations using minimally entangled typical thermal states
Zhenjiu Wang, Paul McClarty, Dobromila Dankova +2
Tensor network states have enjoyed great success at capturing aspects of strong correlation physics. However, obtaining dynamical correlators at non-zero temperatures is genericall…
Fragmented superconductivity in the Hubbard model as solitons in Ginzburg-Landau theory
Niccolò Baldelli, Hannes Karlsson, Benedikt Kloss +2
The phenomena of superconductivity and charge density waves are observed in close vicinity in many strongly correlated materials. Increasing evidence from experiments and numerical…
Finite-temperature properties of the easy-axis Heisenberg model on frustrated lattices
Martin Ulaga, Jure Kokalj, Alexander Wietek +2
Motivated by recent experiments on a compound {displaying Ising-like short-range correlations on the triangular lattice, we study the anisotropic easy-axis spin- Heisenberg mo…
Quantum Electrodynamics in 2+1 Dimensions as the Organizing Principle of a Triangular Lattice Antiferromagnet
Alexander Wietek, Sylvain Capponi, Andreas M. Läuchli
Quantum electrodynamics in dimensions (QED) has been proposed as a critical field theory describing the low-energy effective theory of a putative algebraic Dirac spin liq…
Variational Benchmarks for Quantum Many-Body Problems
Dian Wu, Riccardo Rossi, Filippo Vicentini +30
The continued development of computational approaches to many-body ground-state problems in physics and chemistry calls for a consistent way to assess its overall progress. In this…
Topological States of Matter in Frustrated Quantum Magnetism
Alexander Wietek
Frustrated quantum magnets may exhibit fascinating collective phenomena. The main goal of this dissertation is to provide conclusive evidence for the emergence of novel phases of m…
Unidirectional subsystem symmetry in a hole-doped honeycomb-lattice Ising magnet
Sambuddha Sanyal, Alexander Wietek, John Sous
We study a model of a hole-doped collinear Ising antiferromagnet on the honeycomb lattice as a route toward the realization of subsystem symmetry. We find nearly exact conservation…
Bose-Einstein condensation in honeycomb dimer magnets and
Chunhan Feng, E. Miles Stoudenmire, Alexander Wietek
An asymmetric Bose-Einstein condensation (BEC) dome was observed in a recent experiment on the quantum dimer magnet , which is modeled by a "breathing" honeycomb l…