STRONGLY INTERACTING 1D BOSE GASES

Objective

The physics of interacting one-dimensional systems is very different from that of ordinary three-dimensional configurations. In systems where the dynamics is constrained to only one dimension, interactions play a special role since particles can not avoid each other. As a result, the behaviour of 1D systems turns out to be very peculiar and often counter-intuitive, making them very interesting to study. For example, interacting 1D bosons have the fascinating property to “fermionize” as strong interactions mimic the Pauli exclusion principle. It has been proposed that such one-dimensional systems could be obtained by loading degenerate atomic gases in optical dipole potentials. The scientific interest for the realization of strongly correlated systems goes beyond the field of cold atoms as it might shed new light on long-standing issues in condensed matter physics. Some first experiments have been realized to manipulate such strongly interacting 1D Bose gases. Here, we propose to use optical dipole potentials (a red-detuned 2D lattice and a blue-detuned beam controlling the longitudinal curvature) to create strongly correlated degenerate 1D Bose gases. Such a setup will allow us to continuously tune our 1D gases from the mean-field regime to close to a “fermionized” Bose gas (Tonks-Girardeau regime). We plan to implement a Bragg spectroscopy scheme with a tunable angle and to make use of the noise correlation technic to quantitatively characterize the correlations in the 1D gases, including the spatial extent of correlation functions and their scaling with the strengh of interactions. In addition we propose to study metal-insulator quantum phase transitions induced by the presence of an optical lattice (Mott transition) or a disordered potential (Bose Glass phase) in the strongly interacting regime. A clear identification of these new insulating quantum phases should be provided by the use of the Bragg spectroscopy and noise correlation technics.

Fields of science (EuroSciVoc)

CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.

• natural sciences physical sciences condensed matter physics
• engineering and technology materials engineering
• natural sciences physical sciences optics spectroscopy

Keywords

Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)

• Atomic physics
• Bose-Einstein Condensate
• Correlations
• Metal-insulator phase transition
• One-dimensional
• Spectroscopy

Programme(s)

Multi-annual funding programmes that define the EU’s priorities for research and innovation.

• FP7-PEOPLE - Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)

Topic(s)

Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.

• FP7-PEOPLE-IEF-2008 - Marie Curie Action: "Intra-European Fellowships for Career Development"

Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

FP7-PEOPLE-IEF-2008
See other projects for this call

Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

MC-IEF - Intra-European Fellowships (IEF)

Coordinator