武汉物理与数学研究所：To resolve the mystery of superfluidity and supersolidity（PPT讲稿）superfluidity as a Bose exchange effect

100 70 60 15

100 70 60 15

100 70 60 E E L=kN-1 L=N L=N-1+2k-2 15

1 1 2 2 L kN L kN L N L N E E E E k = = − = = − − = − + −

h2、0 H ∑n+27g∑8( 2MR480 Exact diagonalization n(6)=em,m=0,土1,+2,+3

Exact diagonalization: ( ) , 0, 1, 2, 3,... im m e m   = =    2 2 2 2 1 2 ( ) 2 N N i j i i j i H g MR     =    = − + −   

h2、0 H ∑n+27g∑8( 2MR480 Exact diagonalization 0n(O)=em,m=0,±1+2,+3, many body Fock state mnm2“mn3…), n, particles in m, n, particles in m, n, particles in p

Exact diagonalization: ( ) , 0, 1, 2, 3,... im m e m   = =    2 2 2 2 1 2 ( ) 2 N N i j i i j i H g MR     =    = − + −    1 2 3 1 2 3 1 2 3 1 2 3 many body Fock state: particles in particles in particles in | ... , , , ,... n n n m m m m m m n n n    