Universal clusters as building blocks of stable quantum matter

Abstract

We present an exploratory study that suggests that Efimov physics, a leading research theme in few-body quantum physics, can also induce stable many-body ground states whose building blocks are universal clusters. We identify a range of parameters in a mass-and-density imbalanced two-species fermionic mixture for which the ground state is a gas of Efimov-related universal trimers. An explicit calculation of the trimer-trimer interaction reveals that the trimer phase is an SU$(3)$ Fermi liquid stable against recombination losses. We propose to experimentally observe this phase in a fermionic ${}^6$Li-${}^{53}$Cr mixture.

18 pages, 3 figures

References in corpus (16)

• Weakly bound dimers of fermionic atoms
• Observation of an Efimov spectrum in an atomic system
• Observation of Efimov Resonances in a Mixture with Extreme Mass Imbalance
• Radio Frequency Association of Efimov Trimers
• Mean field phase diagrams of imbalanced Fermi gases near a Feshbach resonance
• Low-energy three-body dynamics in binary quantum gases
• Trimers, molecules and polarons in imbalanced atomic Fermi gases
• A chromium dipolar Fermi sea
• Universal Fermi Gas with Two- and Three-Body Resonances
• Population imbalance and pairing in the BCS-BEC crossover of three-component ultracold fermions
• New type of crossover physics in three-component Fermi gases
• Pauli Blocking Effect on Efimov States Near Feshbach Resonance
• Crossover trimers connecting continuous and discrete scaling regimes
• Pauli blocking effects and Cooper triples in three-component Fermi gases
• Absence of a four-body Efimov effect in the 2 + 2 fermionic problem
• Scattering of universal fermionic clusters in the resonating group method

Cited by in corpus (17)

• Efimov Physics: a review
• Quantum mixtures of ultracold gases of neutral atoms
• Five-Body Efimov Effect and Universal Pentamer in Fermionic Mixtures
• Exploring ultracold collisions in ${}^6$Li-${}^{53}$Cr Fermi mixtures: Feshbach resonances and scattering properties of a novel alkali-transition metal system
• Ultracold LiCr: a new pathway to quantum gases of paramagnetic polar molecules
• Quartet Superfluid in Two-dimensional Mass-imbalanced Fermi Mixtures
• Fast trimers in one-dimensional extended Fermi-Hubbard model
• Double-degenerate Fermi mixtures of ${}^6$Li and ${}^{53}$Cr atoms
• Universal description of three two-component fermions
• Universal trimers emerging from a spin-orbit coupled Fermi sea
• Dynamical formation of the unitary Bose gas
• QCD-like phase diagram with Efimov trimers and Cooper pairs in resonantly interacting SU(3) Fermi gases
• Interferometry of Efimov states in thermal gases by modulated magnetic fields
• Self-binding of one-dimensional fermionic mixtures with zero-range interspecies attraction
• Exploring universal and non-universal regimes of trimers from three-body interactions in one-dimensional lattices
• Universal clusters in quasi-two-dimensional ultracold Fermi mixtures
• Equivalence of dissipative and dissipationless dynamics of interacting quantum systems with its application to the unitary Fermi gas