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Symplectic Fibrations and Multiplicity Diagrams (Hardcover, New): Victor Guillemin, Eugene Lerman, Shlomo Sternberg Symplectic Fibrations and Multiplicity Diagrams (Hardcover, New)
Victor Guillemin, Eugene Lerman, Shlomo Sternberg
R3,426 Discovery Miles 34 260 Ships in 12 - 19 working days

Multiplicity diagrams can be viewed as schemes for describing the phenomenon of "symmetry breaking" in quantum physics: Suppose the state space of a quantum mechanical system is a Hilbert space V, on which the symmetry group G of the system acts irreducibly. How does this Hilbert space break up when G gets replaced by a smaller symmetry group H? In the case where H is a maximal torus of a compact group a convenient way to record the multiplicities is as integers drawn on the weight lattice of H. The subject of this book is the multiplicity diagrams associated with U(n), O(n), and the other classical groups. It presents such topics as asymptotic distributions of multiplicities, hierarchical patterns in multiplicity diagrams, lacunae, and the multiplicity diagrams of the rank-2 and rank-3 groups. The authors take a novel approach, using the techniques of symplectic geometry. They develop in detail some themes that were touched on in Symplectic Techniques in Physics (V. Guillemin and S. Sternberg, Cambridge University Press, 1984), including the geometry of the moment map, the Duistermaat-Heckman theorem, the interplay between coadjoint orbits and representation theory, and quantization. Students and researchers in geometry and mathematical physics will find this book fascinating.

Symplectic Geometry of Integrable Hamiltonian Systems (Paperback, 2003 ed.): Michele Audin, Ana Cannas Da Silva, Eugene Lerman Symplectic Geometry of Integrable Hamiltonian Systems (Paperback, 2003 ed.)
Michele Audin, Ana Cannas Da Silva, Eugene Lerman
R1,739 Discovery Miles 17 390 Ships in 10 - 15 working days

Among all the Hamiltonian systems, the integrable ones have special geometric properties; in particular, their solutions are very regular and quasi-periodic. The quasi-periodicity of the solutions of an integrable system is a result of the fact that the system is invariant under a (semi-global) torus action. It is thus natural to investigate the symplectic manifolds that can be endowed with a (global) torus action. This leads to symplectic toric manifolds (Part B of this book). Physics makes a surprising come-back in Part A: to describe Mirror Symmetry, one looks for a special kind of Lagrangian submanifolds and integrable systems, the special Lagrangians. Furthermore, integrable Hamiltonian systems on punctured cotangent bundles are a starting point for the study of contact toric manifolds (Part C of this book).

Symplectic Fibrations and Multiplicity Diagrams (Paperback): Victor Guillemin, Eugene Lerman, Shlomo Sternberg Symplectic Fibrations and Multiplicity Diagrams (Paperback)
Victor Guillemin, Eugene Lerman, Shlomo Sternberg
R1,373 Discovery Miles 13 730 Ships in 12 - 19 working days

Multiplicity diagrams can be viewed as schemes for describing the phenomenon of "symmetry breaking" in quantum physics. The subject of this book is the multiplicity diagrams associated with the classical groups U(n), O(n), etc. It presents such topics as asymptotic distributions of multiplicities, hierarchical patterns in multiplicity diagrams, lacunae, and the multiplicity diagrams of the rank 2 and rank 3 groups. The authors take a novel approach, using the techniques of symplectic geometry. The book develops in detail some themes which were touched on in the highly successful Symplectic Techniques in Physics by V. Guillemin and S. Sternberg (CUP, 1984), including the geometry of the moment map, the Duistermaat-Heckman theorem, the interplay between coadjoint orbits and representation theory, and quantization. Students and researchers in geometry and mathematical physics will find this book fascinating.

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