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cond-mat2001★ 6 cited
Effective Theory For Quantum Spin System In Low Dimension - Beyond Long-Wavelength Limit
Ranjan Chaudhury, Samir K. Paul
An effective theory for quantum spin system in low dimension is constructed in the finite-q regime. It is shown that there are field configurations for which Wess-Zumino term contr…
cond-mat1996
Van der Waerden's Colouring Theorem and Classical Spin Systems
R. Chaudhury, D. Gangopadhyay, S. K. Paul
We find a non-invertible matrix representation for Van der Waerden's colouring theorem for two distinct colours in a one dimensional periodic lattice. Using this,an infinite one di…