Momentum distribution of noncondensate particles near the superfluid-to-Mott-insulator transition of bosonic atoms in a uniform optical lattice
Momentum distribution of noncondensate particles near the superfluid-to-Mott-insulator transition of bosonic atoms in a uniform optical lattice
We investigate the finite temperature momentum distribution of bosonic noncondensate particles inside a uniform three-dimensional optical lattice near the superfluid-to-Mott-insulator transition point, treating quantum fluctuations and thermal fluctuations on equal footing. We explicitly address the different momentum $(\mathbf{q})$ dependences of quasiparticle distribution resulted from thermal and quantum origins: the former …