Coherent inflationary dynamics for Bose-Einstein condensates crossing a quantum critical point
arXiv:1706.01440 · doi:10.1038/s41567-017-0011-x
Abstract
Quantum phase transitions, transitions between many-body ground states, are of extensive interest in research ranging from condensed matter physics to cosmology. Key features of the phase transitions include a stage with rapidly growing new order, called inflation in cosmology, followed by the formation of topological defects. How inflation is initiated and evolves into topological defects remains a hot debate topic. Ultracold atomic gas offers a pristine and tunable platform to investigate quantum critical dynamics. We report the observation of coherent inflationary dynamics across a quantum critical point in driven Bose-Einstein condensates. The inflation manifests in the exponential growth of density waves and populations in well-resolved momentum states. After the inflation stage, extended coherent dynamics is evident in both real and momentum space. We present an intuitive description of the quantum critical dynamics in our system and demonstrate the essential role of phase fluctuations in the formation of topological defects.
arXiv comment8 pages, 5 figures
References in corpus (18)
- Many-Body Physics with Ultracold Gases
- Nonequilibrium dynamics of closed interacting quantum systems
- Spontaneous symmetry breaking in a quenched ferromagnetic spinor Bose condensate
- Dynamics of a Quantum Phase Transition and Relaxation to a Steady State
- Exploring Symmetry Breaking at the Dicke Quantum Phase Transition
- Dynamical phase transition in the open Dicke model
- Universality of Phase Transition Dynamics: Topological Defects from Symmetry Breaking
- Critical Dynamics of Spontaneous Symmetry Breaking in a Homogeneous Bose gas
- Spatial coherence and density correlations of trapped Bose gases
- Spontaneous creation of Kibble-Zurek solitons in a Bose-Einstein condensate
- In situ observation of strongly interacting ferromagnetic domains in a shaken optical lattice
- Universal space-time scaling symmetry in the dynamics of bosons across a quantum phase transition
- Kibble-Zurek Mechanism in a Spin-1 Bose-Einstein Condensate
- Bose-Einstein condensation into non-equilibrium states studied by condensate focusing
- Observation of scaling in the dynamics of a strongly quenched quantum gas
- Probing the Bose-Glass--Superfluid Transition using Quantum Quenches of Disorder
- Prethermalization in quenched spinor condensates
- Second-quantized Landau-Zener theory for dynamical instabilities
Cited by in corpus (25)
- Quantum Simulation of Coherent Hawking-Unruh Radiation
- Observation of density-dependent gauge fields in a Bose-Einstein condensate based on micromotion control in a shaken two-dimensional lattice
- Crystallization of Bosonic Quantum Hall States
- Acoustic black holes in curved spacetime and emergence of analogue Minkowski metric
- Observation of universal quench dynamics and Townes soliton formation from modulational instability in two-dimensional Bose gases
- Spin current generation and relaxation in a quenched spin-orbit-coupled Bose-Einstein condensate
- Analog Kerr Black hole and Penrose effect in a Bose-Einstein Condensate
- Unruh effect for interacting particles with ultracold atoms
- Complex correlations in high harmonic generation of matter-wave jets revealed by pattern recognition
- Ultrarobust calibration of an optical lattice depth based on a phase shift
- Out-of-equilibrium dynamics of a Bose Einstein condensate in a periodically driven band system
- Universality of miscible-immiscible phase separation dynamics in two-component Bose-Einstein condensates
- Beyond effective Hamiltonians: micromotion of Bose Einstein condensates in periodically driven optical lattices
- Universal dynamics of superradiant phase transition in the anisotropic quantum Rabi model
- Dynamics of Bose-Einstein Recondensation in Higher Bands
- Emergence of a tunable crystalline order in a Floquet-Bloch system from a parametric instability
- Intertwined Space-Time Symmetry, Orbital Magnetism and Dynamical Berry Curvature in a Circularly Shaken Optical Lattice
- Kibble-Zurek scaling of the superfluid-supersolid transition in an elongated dipolar gas
- Quantum Echo in Two-Component Bose-Einstein Condensates
- Simulating Cosmological Evolution by Quantum Quench of an Atomic BEC
- Dynamical preparation of an atomic condensate in a Hofstadter band
- Mechanical cosmology: simulating scalar fluctuations in expanding Universes using synthetic mechanical lattices
- Stability of superfluids in tilted optical lattices with periodic driving
- Atomic twin-beams and violation of a motional-state Bell inequality from a phase-fluctuating quasi-condensate source
- Universality in nonlinear passage through the miscible-immiscible phase transition in two component Bose-Einstein condensates