1. See e.g., E. Fradkin, Field Theories of Condensed Matter Systems (Addison-Wesley, Redwood, 1991); I. Bose, in Frontiers in Condensed Matter Physics: 75th year special publication of Ind. J. Phys., edited by J.K. Bhattacharjee, B.K. Chakrabarti (Allied Publ., New Delhi, 2005)
2. B.K. Chakrabarti, A. Dutta, P. Sen, Quantum Ising Phases and Transitions in Transverse Ising Models (Springer, Heidelberg, 1996)
3. M. Suzuki, Prog. Theor. Phys. 56, 2454 (1976); see also B.K. Chakrabarti, A. Das, pp. 3-36 and N. Hatano, M. Suzuki, pp. 37-68 in Quantum Annealing and Related Optimization Methods, edited by A. Das, B.K. Chakrabarti, LNP 679 (Springer, Heidelberg, 2005)
4. See, e.g., P.M. Chaikin, T.C. Lubensky, Principles of Condensed Matter Physics (Cambridge University Press, Cambridge, 1997)
5. B.K. Chakrabarti, J. Inoue, e-print arXiv:cond-mat/0508218 (2005);