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cond-mat.str-el2002
Study of Low-energy States of Clusters of Spin-1/2 and Spin-1 Triangles with Kagome-like Geometries
Indranil Rudra, S. Ramasesha, Diptiman Sen
We study the low-energy properties of Heisenberg antiferromagnetic spin-1/2 and spin-1 systems on various clusters made up of triangles. Some of the clusters have a geometry simila…
cond-mat.str-el2001
Field Theoretic Studies of Quantum Spin Systems in One Dimension
Diptiman Sen
We describe some field theoretic methods for studying quantum spin systems in one dimension. These include the nonlinear sigma-model approach which is particularly useful for large…
cond-mat.str-el2000
An introduction to bosonization and aome of its applications
Sumathi Rao, Diptiman Sen
We discuss the technique of bosonization for studying systems of interacting fermions in one dimension. After briefly reviewing the low-energy properties of Fermi and Luttinger liq…