LATTICE AND SPIN RELAXATION APPROACH IN LOW-DIMENSIONAL PHYSICS

The following sections are included:

• INTRODUCTION

• SOLITON AND POLARON DYNAMICS IN CONDUCTING POLYMERS

  • Ground State and Localized Excitations

  • Lattice Relaxation Approach for Dynamics

  • Some Results and Discussions

• HOLE MOTION IN A QUANTUM ANTIFERROMAGNET

  • The Model Hamiltonian

  • The Spin Relaxation Approach

  • Some Results and Comments

• ACKNOWLEDGEMENTS

• REFERENCES