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Exotic Superfluid with Emergent flux in a one-dimensional Bose-Fermi mixture
- Publication Year :
- 2024
-
Abstract
- We find a novel chiral superfluid (CSF) phase in a chain of Bose-Fermi mixture, which has been validated using two unbiased numerical methods, density matrix renormalization group and Grassmann multi-scale entanglement renormalization ansatz. The system hosts the interplay between two types of fermions: bare spinless fermions and composite fermions, the latter consisting of a fermion and a boson. In the CSF phase, bosons condensate at non-zero momentum $\pm 2\pi /L$ with chain length $L$. In essence, the local superfluid order parameter continuously rotates along the chain, indicating that the CSF phase spontaneously breaks time-reversal symmetry. This symmetry breaking gives rise to an emergent flux in the background, effectively optimizing the kinetic energy of the composite fermions within the system. We provide a physical understanding at the mean-field level. Furthermore, we demonstrate that the 1D CSF phase can emerge in a more widely applicable extended Hubbard model. The potential realization of this phase in cold-atom experiments has also been explored.<br />Comment: 6 pages, 5 figures
- Subjects :
- Condensed Matter - Quantum Gases
Condensed Matter - Strongly Correlated Electrons
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2402.03875
- Document Type :
- Working Paper