Signatures of integrability in the dynamics of Rydberg-blockaded chains

By V. Khemani, C. Laumann, Anushya Chandran. Physical review B, 2018

211 citations recorded by the source corpus.

A recent experiment on a 51-atom Rydberg-blockaded chain observed anomalously long-lived temporal oscillations of local observables after quenching from an antiferromagnetic initial state. This coherence is surprising as the initial state should have thermalized rapidly to infinite temperature. In this Rapid Communication, we show that the experimental Hamiltonian exhibits nonthermal behavior across its entire many-body spectrum, with similar finite-size scaling properties as models proximate to integrable points. Moreover, we construct an explicit small local deformation of the Hamiltonian which enhances both the signatures of integrability and the coherent oscillations observed after the quench. Our results suggest that a parent proximate integrable point controls the early-to-intermediate time dynamics of the experimental system. The distinctive quench dynamics in the parent model could signal an unconventional class of integrable system.

Subfields: Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/9d4ecabd61bf534e59b1476ef8cf733b3d25ca72

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atomic and Molecular Physics, and Optics

1. V. Khemani
2. R. Nandkishore
3. Roderich Moessner
4. M. Hermele
5. Anushya Chandran
6. Thomas Iadecola
7. M. Pretko
8. Ashvin Vishwanath

In Statistical and Nonlinear Physics

1. R. Nandkishore
2. V. Khemani
3. M. Hermele
4. Anushya Chandran
5. Roderich Moessner
6. M. Pretko

Citations in the corpus

• Localization from Hilbert space shattering: From theory to physical realizations (2020, background): “While it is known how scars may be embedded, by hand, into a thermal many-body spectrum in certain special classes of Hamiltonians [25, 44], there is still little understanding of the general principles that could give rise to scars [27, 31, 35–38, 40, 41] , whether the phenomenon survives weak pert”
• Quantum Many-Body Scars: A Quasiparticle Perspective (2022, background): “(166) and its longer range variants considered in Refs.”