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Criticality and Dual Superfluidity

Objective

Low temperature matter exhibits a spectacular variety of highly ordered states that occur through phase
transitions. In quantum systems, phase transitions and associated critical phenomena constitute a central
issue of modern physics. Wilson’s theory of renormalization showed that very different physical systems
could be unified under the same universality class characterized by critical exponents. The high degree of
control offered by ultracold atom experiments sets them as an ideal platform for the investigation of phase
transitions and critical phenomena.
CRITISUP2 aims at exploring criticality in superfluid spin ½ Fermi gases where the interplay between
temperature spin polarization and interactions is at the origin of a rich phase diagram and a variety of phase
transitions. We will measure the corresponding static and dynamic critical exponents, and search for the
long-sought Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase predicted over 50 years ago. We will also
study the phase diagram and critical counterflow of dual Bose-Fermi superfluids which have emerged as a
new paradigm of quantum matter. Cutting-edge Bold Diagrammatic Monte Carlo and new resummation
methods, developed in-house, will be confronted to the experiments on the one hand, and provide answers to
debated questions on the other.
The expected outcomes of CRITISUP2 will constitute a major leap forward relevant for several fields of
modern physics, ranging from condensed-matter to astrophysics, nuclear physics, and high energy physics.

Host institution

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
Net EU contribution
€ 2 188 628,50
Address
Rue Michel Ange 3
75794 Paris
France

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Region
Ile-de-France Ile-de-France Paris
Activity type
Research Organisations
Non-EU contribution
€ 0,00

Beneficiaries (2)

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
France
Net EU contribution
€ 2 188 628,50
Address
Rue Michel Ange 3
75794 Paris

See on map

Region
Ile-de-France Ile-de-France Paris
Activity type
Research Organisations
Non-EU contribution
€ 0,00
Third-party

Legal entity other than a subcontractor which is affiliated or legally linked to a participant. The entity carries out work under the conditions laid down in the Grant Agreement, supplies goods or provides services for the action, but did not sign the Grant Agreement. A third party abides by the rules applicable to its related participant under the Grant Agreement with regard to eligibility of costs and control of expenditure.

ECOLE NORMALE SUPERIEURE
France
Net EU contribution
€ 57 907,50
Address
45, Rue D'ulm
75230 Paris Cedex 05

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Region
Ile-de-France Ile-de-France Paris
Activity type
Higher or Secondary Education Establishments
Non-EU contribution
€ 0,00