Universal dynamics of a degenerate unitary Bose gas

@article{Makotyn2014UniversalDO,
  title={Universal dynamics of a degenerate unitary Bose gas},
  author={Philip Makotyn and Catherine E Klauss and David Goldberger and Eric Allin Cornell and Deborah S. Jin},
  journal={Nature Physics},
  year={2014},
  volume={10},
  pages={116-119}
}
Ultracold atoms could help in understanding the physics of strongly interacting many-body systems, but the creation of degenerate Bose gases at unitarity has been hampered by the losses. An experiment overcomes these problems and investigates the time evolution of a unitary Bose gas. 

Figures from this paper

Quantum distillation and confinement of vacancies in a doublon sea
An experiment reveals the dynamics of singly and doubly occupied sites in an atomic Bose gas in a one-dimensional optical lattice, which may provide a better understanding of thermalization andExpand
Strongly correlated Bose gases
The strongly interacting Bose gas is one of the most fundamental paradigms of quantum many-body physics and the subject of many experimental and theoretical investigations. We review recent progressExpand
Momentum Distribution of a Dilute Unitary Bose Gas with Three-Body Losses.
Using a combination of Boltzmann's equation and virial expansion, we study the effect of three-body losses and interactions on the momentum distribution of a homogeneous unitary Bose gas in theExpand
Macroscopically visible quantum interference due to strong interactions in colliding BECs
  • R. Wooten, M. Kira
  • Physics
  • 2017 Conference on Lasers and Electro-Optics (CLEO)
  • 2017
We use a non-perturbative many-body theory to explore macroscopic quantum interference in strongly interacting, colliding Bose-Einstein condensates.
Pair formation in quenched unitary Bose gases
We study a degenerate Bose gas quenched to unitarity by solving a many-body model including three-body losses and correlations up to second order. As the gas evolves in this strongly-interactingExpand
Dynamical formation of the unitary Bose gas
We study the structure of a Bose-condensed gas after quenching interactions to unitarity. Using the method of cumulants, we decompose the evolving gas in terms of clusters. Within the quantumExpand
Resonantly Interacting Degenerate Bose Gas Oddities
The progression from two- through few- to many-body physics is an open and interesting question. Experiments that can test these theories must walk the fine line between cultivating a rich many-bodyExpand
Universal few-body physics and cluster formation
A comprehensive account of the theoretical analyses of the Efimov effect and the universal properties of three-body bound states is provided. Recent experimental studies are reviewed and shown howExpand
Observation of Coherent Vortex Dynamics in Two-Dimensional Superfluid Helium
Two-dimensional superfluidity and quantum turbulence are emergent phenomena native to various condensed matter systems ranging from ultracold quantum gases to superfluid helium. However, to date,Expand
Universal prethermal dynamics of Bose gases quenched to unitarity
TLDR
Degenerate and thermal Bose gases, quenched so that the interparticle interactions are as strong as allowed by quantum mechanics, exhibit dynamics that can be expressed in terms of universal functions. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 34 REFERENCES
Population distribution of product states following three-body recombination in an ultracold atomic gas
Atom and ion trapping provides new tools for ultracold chemistry. Using these techniques it is possible to measure the population distribution of the product states of three-body recombination in anExpand
Three-body recombination at large scattering lengths in an ultracold atomic gas.
TLDR
Evidence of recombination heating indicates the formation of very weakly bound molecules in the last bound energy level in an optically trapped ultracold gas of cesium atoms. Expand
Ground state of a resonantly Interacting Bose gas
We show that a two-channel mean-field theory for a Bose gas near a Feshbach resonance allows for an analytic computation of the chemical potential, and therefore the universal constant β, atExpand
Three-dimensional Bose gas near a Feshbach resonance
In this paper, we explore the nature of three-dimensional Bose gases at large positive scattering lengths via resummation of dominating processes involving a minimum number of virtual atoms. We focusExpand
Efimov-driven phase transitions of the unitary Bose gas.
TLDR
This work uses a path-integral Monte Carlo algorithm backed up by theoretical arguments to show that unitary bosons undergo a first-order phase transition from a normal gas to a superfluid Efimov liquid, bound by the same effects as EFimov trimers. Expand
Condensation dynamics in a quantum-quenched Bose gas.
By quenching the strength of interactions in a partially condensed Bose gas, we create a "supersaturated" vapor which has more thermal atoms than it can contain in equilibrium. Subsequently, theExpand
Universal thermodynamics of degenerate quantum gases in the unitarity limit.
  • T. Ho
  • Physics, Medicine
  • Physical review letters
  • 2004
TLDR
A "universality hypothesis" for the relevant energy scales which is supported by experiments and can be proven in the Boltzmann regime implies a universal form for the grand potential, which is specified by only a few universal numbers in the degenerate limit. Expand
Feshbach resonances in ultracold gases
Feshbach resonances are the essential tool to control the interaction between atoms in ultracold quantum gases. They have found numerous experimental applications, opening up the way to importantExpand
Dynamics and thermodynamics of the low-temperature strongly interacting Bose gas.
TLDR
The data show a clear departure from mean-field theory and provide a quantitative test of the many-body corrections first predicted in 1957 and deduce a lower bound for the value of the universal constant ξ > 0.44(8) that would characterize the universal Bose gas at the unitary limit. Expand
Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas.
TLDR
A reversible conversion of a 6Li2 molecular Bose-Einstein condensate to a degenerate Fermi gas of atoms by adiabatically crossing a Feshbach resonance is demonstrated. Expand
...
1
2
3
4
...