Emergent chiral Higgs mode in $π$-flux frustrated lattices
- URL: http://arxiv.org/abs/2601.08925v1
- Date: Tue, 13 Jan 2026 19:03:05 GMT
- Title: Emergent chiral Higgs mode in $π$-flux frustrated lattices
- Authors: Maria Lanaro, Lorenzo Maffi, Marco Di Liberto,
- Abstract summary: Neutral-atom quantum simulators provide a powerful platform for realizing strongly correlated phases.<n>Recent observations of quantum phases in flux-frustrated with non-vanishing ground state currentsMotivated by recent observations of quantum phases in flux-frustrated with non-vanishing ground state currents.<n>Our results establish an experimentally realistic setting for probing unconventional TRS-broken phases and quasiparticles with intrinsic chirality in strongly interacting quantum matter.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Neutral-atom quantum simulators provide a powerful platform for realizing strongly correlated phases, enabling access to dynamical signatures of quasiparticles and symmetry breaking processes. Motivated by recent observations of quantum phases in flux-frustrated ladders with non-vanishing ground state currents, we investigate interacting bosons on the dimerized BBH lattice in two dimensions-originally introduced in the context of higher-order topology. After mapping out the phase diagram, which includes vortex superfluid (V-SF), vortex Mott insulator (V-MI), and featureless Mott insulator (MI) phases, we focus on the integer filling case. There, the MI/V-SF transition simultaneously breaks the $\mathbb Z_2^{T}$ and U(1) symmetries, where $\mathbb Z_2^{T}$ corresponds to time-reversal symmetry (TRS). Using a slave-boson description, we resolve the excitation spectrum across the transition and uncover a chiral Higgs mode whose mass softens at criticality, providing a dynamical hallmark of emergent chirality that we numerically probe via quench dynamics. Our results establish an experimentally realistic setting for probing unconventional TRS-broken phases and quasiparticles with intrinsic chirality in strongly interacting quantum matter.
Related papers
- Microscopic Origin of Domain Wall Reconfiguration Dynamics in a Quantum Material via Quantum Simulation [0.0]
In quantum materials 1T-TaS$$, domain-wall-rich polaronic textures evolve toward a uniform ground state through reconfiguration events.<n>We employ quantum simulation of a two-dimensional transverse-field Ising model to uncover the microscopic processes underlying this relaxation.<n>Our results establish quantum simulation as a powerful tool for inferring real-space mechanisms in strongly correlated systems.
arXiv Detail & Related papers (2025-08-27T16:33:03Z) - Constrained many-body phases in a $\mathbb{Z}_2$-Higgs lattice gauge theory [39.58317527488534]
We study a one-dimensional $mathbbZ$ lattice gauge theory coupled to soft-core bosonic matter at unit filling.<n>Through a combination of analytical perturbative approaches, we uncover a rich phase diagram driven by gauge-field-mediated resonant pair hopping.<n>The presence of a bunching state with large number fluctuations motivates experimental realizations in hybrid boson-qubit quantum simulation platforms.
arXiv Detail & Related papers (2025-03-05T19:00:07Z) - Thermalization and Criticality on an Analog-Digital Quantum Simulator [133.58336306417294]
We present a quantum simulator comprising 69 superconducting qubits which supports both universal quantum gates and high-fidelity analog evolution.
We observe signatures of the classical Kosterlitz-Thouless phase transition, as well as strong deviations from Kibble-Zurek scaling predictions.
We digitally prepare the system in pairwise-entangled dimer states and image the transport of energy and vorticity during thermalization.
arXiv Detail & Related papers (2024-05-27T17:40:39Z) - Emergence of non-Abelian SU(2) invariance in Abelian frustrated
fermionic ladders [37.69303106863453]
We consider a system of interacting spinless fermions on a two-leg triangular ladder with $pi/2$ magnetic flux per triangular plaquette.
Microscopically, the system exhibits a U(1) symmetry corresponding to the conservation of total fermionic charge, and a discrete $mathbbZ$ symmetry.
At the intersection of the three phases, the system features a critical point with an emergent SU(2) symmetry.
arXiv Detail & Related papers (2023-05-11T15:57:27Z) - Quantum critical behavior of entanglement in lattice bosons with
cavity-mediated long-range interactions [0.0]
We analyze the ground-state entanglement entropy of the extended Bose-Hubbard model with infinite-range interactions.
This model describes the low-energy dynamics of ultracold bosons tightly bound to an optical lattice and dispersively coupled to a cavity mode.
arXiv Detail & Related papers (2022-04-16T04:10:57Z) - Tuning long-range fermion-mediated interactions in cold-atom quantum
simulators [68.8204255655161]
Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior.
Here, we propose several tuning knobs, accessible in current experimental platforms, that allow to further control the range and shape of the mediated interactions.
arXiv Detail & Related papers (2022-03-31T13:32:12Z) - Phase diagram of Rydberg-dressed atoms on two-leg square ladders:
Coupling supersymmetric conformal field theories on the lattice [52.77024349608834]
We investigate the phase diagram of hard-core bosons in two-leg ladders in the presence of soft-shoulder potentials.
We show how the competition between local and non-local terms gives rise to a phase diagram with liquid phases with dominant cluster, spin, and density-wave quasi-long-range ordering.
arXiv Detail & Related papers (2021-12-20T09:46:08Z) - Dynamical quantum phase transitions in the one-dimensional extended
Fermi-Hubbard model [0.0]
We study the emergence of dynamical quantum phase transitions (DQPTs) in a half-filled one-dimensional lattice.
We identify several types of sudden interaction quenches which lead to DQPTs.
State-of-the-art cold-atom quantum simulators constitute ideal platforms to implement several reported DQPTs experimentally.
arXiv Detail & Related papers (2021-09-16T04:12:50Z) - Superposition of two-mode squeezed states for quantum information
processing and quantum sensing [55.41644538483948]
We investigate superpositions of two-mode squeezed states (TMSSs)
TMSSs have potential applications to quantum information processing and quantum sensing.
arXiv Detail & Related papers (2021-02-01T18:09:01Z) - Probing eigenstate thermalization in quantum simulators via
fluctuation-dissipation relations [77.34726150561087]
The eigenstate thermalization hypothesis (ETH) offers a universal mechanism for the approach to equilibrium of closed quantum many-body systems.
Here, we propose a theory-independent route to probe the full ETH in quantum simulators by observing the emergence of fluctuation-dissipation relations.
Our work presents a theory-independent way to characterize thermalization in quantum simulators and paves the way to quantum simulate condensed matter pump-probe experiments.
arXiv Detail & Related papers (2020-07-20T18:00:02Z) - Dynamical solitons and boson fractionalization in cold-atom topological
insulators [110.83289076967895]
We study the $mathbbZ$ Bose-Hubbard model at incommensurate densities.
We show how defects in the $mathbbZ$ field can appear in the ground state, connecting different sectors.
Using a pumping argument, we show that it survives also for finite interactions.
arXiv Detail & Related papers (2020-03-24T17:31:34Z) - Probing XY phase transitions in a Josephson junction array with tunable
frustration [0.0]
We study the critical behavior of engineered XY models through their dynamical response.
We identify the transition temperatures for both the unfrustrated and fully-frustrated XY models.
arXiv Detail & Related papers (2020-01-22T04:54:41Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.