作者: S. Greschner , G. Sun , D. Poletti , L. Santos
DOI: 10.1103/PHYSREVLETT.113.215303
关键词: Gauge theory 、 Gauge boson 、 Mott insulator 、 Insulator (electricity) 、 Condensed matter physics 、 Superfluidity 、 Quantum mechanics 、 Density dependent 、 Physics 、 Hamiltonian lattice gauge theory 、 Time of flight
摘要: We show that density-dependent synthetic gauge fields may be engineered by combining periodically modulated interactions and Raman-assisted hopping in spin-dependent optical lattices. These lead to a shift of the momentum distribution, induce superfluid-to-Mott insulator transitions, strongly modify correlations superfluid regime. interplay between created field broken sublattice symmetry results, as well, an intriguing behavior at vanishing interactions, characterized appearance fractional Mott insulator.