Frustrated superradiant phases in one- and two-dimensional lattices

• URL: http://arxiv.org/abs/2606.05278v1
• Date: Wed, 03 Jun 2026 18:00:00 GMT
• Title: Frustrated superradiant phases in one- and two-dimensional lattices
• Abstract summary: We show that frustration drives photonic density-wave ordering, and that the resulting broken periodicity can be predicted from the excitation spectrum of the symmetric phase.<n>We also find quasi-periodic ordering in the superradiant phase, reminiscent of quasicrystals, and demonstrate that synthetic magnetic flux provides a powerful knob to control the nature of translational symmetry breaking.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Understanding how frustration and symmetry breaking shape collective behavior is a central problem in quantum many-body systems. In this work, we investigate this problem in large one- and two-dimensional arrays of coupled Dicke models on a periodic lattice, where strong light-matter coupling gives rise to a superradiant phase and competition between neighboring order parameters induces spontaneous translational symmetry breaking. Such Dicke lattice models constitute a fundamentally new class of quantum many-body systems, as they simultaneously realize the thermodynamic limit associated with the lattice size and an intrinsic thermodynamic limit arising from collective on-site interactions with quantum emitters. We show that frustration drives photonic density-wave ordering, and that the resulting broken periodicity can be predicted from the excitation spectrum of the symmetric phase, without requiring computationally prohibitive thermodynamic energy minimization. Furthermore, we demonstrate that an emergent Nambu-Goldstone mode arises near the critical point in a one-dimensional chain despite the presence of only discrete symmetry, and uncover the mechanism that enables this otherwise forbidden gapless excitation. We also find quasi-periodic ordering in the superradiant phase, reminiscent of quasicrystals, and demonstrate that synthetic magnetic flux provides a powerful knob to control the nature of translational symmetry breaking. Our results establish a new direction in quantum many-body physics where the coexistence of local and global thermodynamic limits gives rise to unconventional symmetry breaking and emergent collective behavior.

Related papers

• Competing Soft Modes and Tunable Multicriticality in a Generalized Two-Mode Quantum Rabi Model [1.2425910171551517]
  Multicritical phenomena play a central role in quantum many-body systems, yet their microscopic origin in light--matter platforms remains largely unexplored.<n>We show that anisotropy lifts the parent U(1)-symmetric superradiant manifold with a gapless Goldstone-like mode by phase locking the complex superradiant order parameter.<n>Our results identify competing soft-mode channels as the microscopic origin of tunable multicriticality in strongly coupled light--matter systems.
  arXiv  Detail & Related papers  (2026-08-26T07:19:23Z)
• Far-field spatial coherence driven by lossy objects: first-principles approach unifying scattering of quantum light and thermal emission [51.56484100374058]
  We develop a first-principles framework based on the modified Langevin noise formalism to unify the scattering of quantum light and the intrinsic thermal emission of finite dissipative objects.<n>Applying this framework across optical regimes, we determine operational bounds for lossy quantum photonics.
  arXiv  Detail & Related papers  (2026-07-01T09:04:32Z)
• Magnetic long-range order at finite temperature in two-dimensional hyperbolic lattices [45.88028371034407]
  Infrared singularities of gapless Goldstone modes preclude magnetic long-range order at finite temperature in conventional two-dimensional systems.<n>We find that the zero-energy collective modes required by symmetry carry vanishing local spectral weight.<n>We estimate the ordering temperature from the thermal spin-wave correction to the ordered moment.
  arXiv  Detail & Related papers  (2026-06-25T18:00:01Z)
• Hydrodynamic tails in chaotic spin chains with quantum group symmetry [36.94429692322632]
  We show that quantum group symmetry provides a novel mechanism for anomalous hydrodynamics in chaotic systems.<n>We study the dynamics of local operators carrying $U(1)$ charge in non-integrable lattice models that also have quantum group symmetry.
  arXiv  Detail & Related papers  (2026-06-18T18:34:52Z)
• A closed system setting for quantum thermalisation in free fermions [0.13999481573773073]
  We study thermalisation and the possible occurrence of the Mpemba effect in a closed quantum setting.<n>This setup provides a simple quantum realisation of a temperature quench.<n>We find that, despite the genuine non-equilibrium dynamics displayed by the system, no Mpemba effect arises in this setting.
  arXiv  Detail & Related papers  (2026-06-04T16:31:03Z)
• Breakdown of Thermalization from Real-Time Dynamics in the Two-Dimensional Hubbard Model [37.56003520528009]
  Thermalization in strongly correlated fermionic systems remains a central open problem in quantum many-body physics.<n>In this work, we investigate the real-time dynamics and the approach to thermalization in the two-dimensional Hubbard model.
  arXiv  Detail & Related papers  (2026-06-03T18:00:05Z)
• Magnetic domains stabilized by symmetry-protected zero modes [0.10923877073891443]
  We show strong non-ergodic behavior in the XX model on coupled chains.<n>Antiferromagnetic defects in the initial state and symmetry-breaking perturbations restore slow thermalization.<n>These results establish that degenerate, symmetry-protected subspaces can give rise to thermodynamically stable non-ergodic dynamics in experimentally accessible quantum systems.
  arXiv  Detail & Related papers  (2026-04-16T20:36:42Z)
• Continuum field theory of matchgate tensor network ensembles [36.94429692322632]
  We develop a continuum description for random ensembles of two-dimensional fermionic matchgate tensor networks.<n>As a diagnostic of the resulting universal physics, we analyze disorder-averaged moments of fermionic two-point functions.<n>We show that disorder drives universal long-distance behavior governed by a nonlinear sigma-model of symmetry class D with a topological term.
  arXiv  Detail & Related papers  (2026-03-06T12:15:35Z)
• Symmetry-protected topology and deconfined solitons in a multi-link $\mathbb{Z}_2$ gauge theory [45.88028371034407]
  We study a $mathbbZ$ lattice gauge theory defined on a multi-graph with links that can be visualized as great circles of a spherical shell.<n>We show that this leads to state-dependent tunneling amplitudes underlying a phenomenon analogous to the Peierls instability.<n>By performining a detailed analysis based on matrix product states, we prove that charge deconfinement emerges as a consequence of charge-fractionalization.
  arXiv  Detail & Related papers  (2026-03-02T22:59:25Z)
• Probing emergent prethermal dynamics and resonant melting on a programmable quantum simulator [28.28351393962583]
  dynamics of isolated quantum systems following a sudden quench plays a central role in many areas of material science, high-energy physics, and quantum chemistry.<n>Here, we use a programmable neutral atom quantum simulator to explore quench dynamics in spin models with up to 180 qubits.<n>We trace their robustness to Floquet-like prethermal steady states that are stabilized over long emergent timescales.
  arXiv  Detail & Related papers  (2025-10-13T17:58:04Z)
• Quantized Thouless pumps protected by interactions in dimerized Rydberg tweezer arrays [41.94295877935867]
  In the noninteracting case, quantized Thouless pumps can only occur when a topological singularity is encircled adiabatically. In the presence of interactions, such topological transport can even persist for exotic paths in which the system gets arbitrarily close to the noninteracting singularity.
  arXiv  Detail & Related papers  (2024-02-14T16:58:21Z)
• Rotor/spin-wave theory for quantum spin models with U(1) symmetry [0.0]
  We show that the zero mode corresponds exactly to a U(1) quantum rotor, related to the Anderson tower of states expected in systems showing symmetry breaking in the thermodynamic limit. This picture leads to an approximate separation of variables between rotor and spin-wave ones, which allows for a correct description of the ground-state and low-energy physics.
  arXiv  Detail & Related papers  (2023-03-01T10:04:11Z)
• Relaxation to a Parity-Time Symmetric Generalized Gibbs Ensemble after a Quantum Quench in a Driven-Dissipative Kitaev Chain [0.0]
  We show that relaxation of driven-dissipative systems after a quantum quench can be determined by a maximum entropy ensemble. We show that these results apply to broad classes of noninteracting fermionic models.
  arXiv  Detail & Related papers  (2022-03-28T08:59:58Z)

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.