QUANTUM GROUPS

QUANTUM GROUPS

December 1992 | M. Ruiz-Altaba
This text presents an overview of quantum groups and their applications in physics, particularly in the context of integrable systems. It begins with an introduction to quantum symmetries and their importance in understanding two-dimensional physics. The text then discusses factorizable S-matrices, which are essential for describing scattering processes in integrable systems. It explains Bethe's diagonalization of spin chain Hamiltonians, a method used to find eigenvalues and eigenvectors of certain quantum systems. The paper also covers integrable vertex models, specifically the six-vertex model, and the Yang-Baxter algebra, which is central to the study of integrable systems. The Yang-Baxter equation is highlighted as a key mathematical structure that ensures the integrability of these systems. The text further explores the connection between quantum groups and the Yang-Baxter algebra, emphasizing the role of quantum groups in describing symmetries of integrable systems. It discusses the physical spectrum of the Heisenberg spin chain and the properties of quantum groups, including their relation to Hopf algebras and affine quantum groups. The paper concludes with a discussion of the importance of the Yang-Baxter equation in ensuring the integrability of both spin chain models and vertex models. The text also touches on the physical implications of the Yang-Baxter equation and its role in the study of quantum systems.This text presents an overview of quantum groups and their applications in physics, particularly in the context of integrable systems. It begins with an introduction to quantum symmetries and their importance in understanding two-dimensional physics. The text then discusses factorizable S-matrices, which are essential for describing scattering processes in integrable systems. It explains Bethe's diagonalization of spin chain Hamiltonians, a method used to find eigenvalues and eigenvectors of certain quantum systems. The paper also covers integrable vertex models, specifically the six-vertex model, and the Yang-Baxter algebra, which is central to the study of integrable systems. The Yang-Baxter equation is highlighted as a key mathematical structure that ensures the integrability of these systems. The text further explores the connection between quantum groups and the Yang-Baxter algebra, emphasizing the role of quantum groups in describing symmetries of integrable systems. It discusses the physical spectrum of the Heisenberg spin chain and the properties of quantum groups, including their relation to Hopf algebras and affine quantum groups. The paper concludes with a discussion of the importance of the Yang-Baxter equation in ensuring the integrability of both spin chain models and vertex models. The text also touches on the physical implications of the Yang-Baxter equation and its role in the study of quantum systems.
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