noncommutative BPS solitons", JHEP [**0103**]{} (2001) 034, hep-th/0010221.

D. J. Gross and N. A. Nekrasov, “ Solitons in noncommutative Gauge Theory”, hep-th/0010090; M. R. Douglas and N. A. Nekrasov, “Noncommutative Field Theory”, hep-th/0106048. E. J. Martinec and G. Moore, “Noncommutative Solitons on Orbifolds”, hep-th/0101199.

B. Y. Hou, D.T. Peng, K.J. Shi, R.H. Yue,“Solitons on Noncommutative Torus as Elliptic Calogero Gaudin Models ,Branes and Laughlin wave function ”, hep-th/0204163.

B. Y. H, D.T. Peng, “Elliptic Algebra and Integrable Models for Solitons on Noncummutative Torus”, Int.J.Mod.Phys. B16 (2002) 2079-2088 . B.Y. Hou, K. J. Shi, Z. Y. Yang, “Solitons on Noncommutative Orbifold $T^{2}/Z_{N}$”, Lett. Math. Phys61 (2002) 205-220, hep-th/0204102. G.Derrick, “Comments on Nonlinear Wave Equtions as Models for Elementary Particles”, J.Math.Phys 5,1252(1965),S.Coleman, “Aspects of Symmetry”,Chapters 6 and 7. A.Sen, “Tachyon condensation on the brane antibrane system”, JHEP 08,012(1998), hep-th/9805170.

A.Sen, “Tachyon condensation in string theory”,JHEP 0003,(2000) 0002, hep-th/9912249.

M. Rieffel, Pacific J. Math. 93 (1981) 415.

F. P. Boca, Comm. Math. Phys. 202 (1999) 325.

H.Bacry, A.Grassman and J. Zak, Phys.Rev B12(1975) 1112.

J. Zak, In solid State Physics, edited by H. Ehrenreich, F. Seitz and D. Turnbull (Academic,new York,1972), Vol. 27.

[^1]: Email:byhou@phy.nwu.edu.cn

[^2]: Email:yzy@phy.nwu.edu.cn

[^3]: Email:yue@phy.nwu.edu.cn

[^4]: It is necessary 