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Quantum Gas in a Box

Total Cost €


EC-Contrib. €






Project "QBox" data sheet

The following table provides information about the project.


Organization address
postcode: CB2 1TN

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country United Kingdom [UK]
 Total cost 1˙943˙753 €
 EC max contribution 1˙943˙753 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2015-CoG
 Funding Scheme ERC-COG
 Starting year 2016
 Duration (year-month-day) from 2016-05-01   to  2021-04-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

'Ultracold atomic gases offer flexible systems for fundamental studies of both equilibrium and non-equilibrium many-body problems that are relevant across many fields, from condensed matter physics to high-energy physics and astrophysics. In the long run, research on these systems could also lead to practical applications, in the development of novel materials, force sensing, navigation, and quantum information processing.

Traditionally, an important difference between 'conventional' many-body systems and ultracold gases has been that the former are usually spatially uniform, while the latter were produced in harmonic traps. This difference can often be addressed using the local density approximation (LDA), but for studies of some very important problems it is a serious hindrance. In particular, LDA breaks down close to phase transitions, where the correlation length diverges, and where (due to the “critical slowing down” of the system) some of the most interesting non-equilibrium effects also emerge.

Here we propose a comprehensive study of both equilibrium and non-equilibrium many-body phenomena in a homogeneous 39K Bose gas with dynamically tuneable interactions. The use of a homogeneous quantum gas, produced in our newly developed box-like trapping potential (in contrast to the standard setting of a harmonic trap) is a particularly important and unique aspect of this proposal, which will allow for closer connections with both other many-body systems and the theoretical calculations.

We will specifically focus on problems in beyond-mean-field physics and on those that cannot be effectively tackled using a harmonically trapped gas. The outstanding problems we will address range from the 50-year-old equilibrium problem of the critical temperature of an interacting homogeneous gas, to the modern topics of quenches and non-equilibrium (Kibble-Zurek and beyond) critical dynamics, to the largely unexplored problem of the unitary Bose gas. '


year authors and title journal last update
List of publications.
2018 Christoph Eigen, Jake A. P. Glidden, Raphael Lopes, Eric A. Cornell, Robert P. Smith, Zoran Hadzibabic
Universal prethermal dynamics of Bose gases quenched to unitarity
published pages: 221-224, ISSN: 0028-0836, DOI: 10.1038/s41586-018-0674-1
Nature 563/7730 2020-01-20
2017 Christoph Eigen, Jake A. P. Glidden, Raphael Lopes, Nir Navon, Zoran Hadzibabic, Robert P. Smith
Universal Scaling Laws in the Dynamics of a Homogeneous Unitary Bose Gas
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.119.250404
Physical Review Letters 119/25 2020-01-20
2018 Richard J. Fletcher, Jay Man, Raphael Lopes, Panagiotis Christodoulou, Julian Schmitt, Maximilian Sohmen, Nir Navon, Robert P. Smith, Zoran Hadzibabic
Elliptic flow in a strongly interacting normal Bose gas
published pages: , ISSN: 2469-9926, DOI: 10.1103/PhysRevA.98.011601
Physical Review A 98/1 2020-01-20
2016 Nir Navon, Alexander L. Gaunt, Robert P. Smith, Zoran Hadzibabic
Emergence of a turbulent cascade in a quantum gas
published pages: 72-75, ISSN: 0028-0836, DOI: 10.1038/nature20114
Nature 539/7627 2020-01-20
2017 Raphael Lopes, Christoph Eigen, Nir Navon, David Clément, Robert P. Smith, Zoran Hadzibabic
Quantum Depletion of a Homogeneous Bose-Einstein Condensate
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.119.190404
Physical Review Letters 119/19 2020-01-20
2017 Raphael Lopes, Christoph Eigen, Adam Barker, Konrad G. H. Viebahn, Martin Robert-de-Saint-Vincent, Nir Navon, Zoran Hadzibabic, Robert P. Smith
Quasiparticle Energy in a Strongly Interacting Homogeneous Bose-Einstein Condensate
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.118.210401
Physical Review Letters 118/21 2020-01-20
2017 Richard J. Fletcher, Raphael Lopes, Jay Man, Nir Navon, Robert P. Smith, Martin W. Zwierlein, Zoran Hadzibabic
Two- and three-body contacts in the unitary Bose gas
published pages: 377-380, ISSN: 0036-8075, DOI: 10.1126/science.aai8195
Science 355/6323 2020-01-20
2016 Christoph Eigen, Alexander L. Gaunt, Aziza Suleymanzade, Nir Navon, Zoran Hadzibabic, Robert P. Smith
Observation of Weak Collapse in a Bose-Einstein Condensate
published pages: , ISSN: 2160-3308, DOI: 10.1103/PhysRevX.6.041058
Physical Review X 6/4 2020-01-20

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