h2、0 H ∑n+27g∑8( 2MR480 fv(1,2,…,6) is an eigenstate with0≤L<N, then o(122,…,、)=e i(1+2+…+ v(1,O2…,O) is an eigenstate, with L=L +kN E=E +L/N-L2/N=E +kN+2KL See also: F. Bloch, Phys. Rev. A, 7, 2187(1973) G M. Kavoulakis. et al. cond-mat/05103152 2 2 2 1 2 ( ) 2 N N i j i i j i H g MR     =    = − + −    1 2 ' 1 2 ( ... ) 1 2 1 2 ' 2 '2 2 ' if ( , ,..., ) is an eigenstate with 0 , then ( , ,..., ) ( , ,..., ) is an eigenstate, with , / / 2 N N ik N N L N e L L kN E E L N L N E k N kL                   + + +   = = + = + − = + + See also: F. Bloch, Phys. Rev. A, 7,2187(1973) G. M. Kavoulakis, et al. cond-mat/0510315