Cold Atom Quantum Simulator for Dilute Neutron Matter

Abstract

The internal structure of neutron stars and the physical properties of nuclei depend on the equation of state (EOS) of neutron matter. Dilute neutron matter is a quantum system of spin-1/2 Fermi particles interacting via s-wave scattering. Although a nuclear system and an ultracold atomic system have length scales and energy scales that differ by several orders of magnitude, both systems follow a common universal EOS considering their non-dimensional universal interaction parameters. In this study, we determine the EOS of neutron matter in the dilute region, where the influence of the s-wave scattering length is dominant but that of the effective range is small, by utilizing a quantum simulator of ultracold ${}^6$Li atoms with Feshbach resonance.

29 pages, 8 figures, accepted for International Journal of Modern Physics E

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• Self-complete and GUP-Modified Charged and Spinning Black Holes
• Superfluid Phase Transitions and Effects of Thermal Pairing Fluctuations in Asymmetric Nuclear Matter
• Quasiparticle properties of a single alpha particle in cold neutron matter
• Unitary $p$-wave Fermi gas in one dimension
• QCD-like phase diagram with Efimov trimers and Cooper pairs in resonantly interacting SU(3) Fermi gases
• Role of the effective range in the density-induced BEC-BCS crossover
• Generalized Crossover in Interacting Fermions within the Low-Energy Expansion
• Collisional dynamics of polaronic clouds immersed in a Fermi sea
• Polaronic Proton and Diproton Clustering in Neutron-Rich Matter
• Goldstino spectrum in an ultracold Bose-Fermi mixture with explicitly broken supersymmetry
• Non-relativistic trace anomaly and equation of state in dense fermionic matter
• Non-Hermitian Ferromagnetism in an Ultracold Fermi Gas
• Extracting non-local inter-polaron interactions from collisional dynamics
• Spin-dipole mode in a trapped Fermi gas near unitarity
• Universal bound states and resonances with Coulomb plus short-range potentials
• Effects of dilute neutron matter on the neutron star crust equation of state
• Neutrino-Neutron Scattering Opacities in Supernova Matter
• A model study on superfluidity of a unitary Fermi gas of atoms interacting with a finite-ranged potential
• Equivalence of dissipative and dissipationless dynamics of interacting quantum systems with its application to the unitary Fermi gas