Hamiltonian algebroids
0.1 Introduction
Hamiltonian algebroids are generalizations of the Lie algebras of canonical transformations, but cannot be considered just a special case of Lie algebroids. They are instead a special case of a http://planetphysics.org/encyclopedia/QuantumAlgebroid.htmlquantum algebroid.
Definition 0.1.
Let and be two vector fields on a smooth manifold , represented here as operators acting on functions. Their commutator, or Lie bracket, , is :
Moreover, consider the classical configuration space of a classical, mechanical system, or particle whose phase space is the cotangent bundle , for which the space of (classical) observables is taken to be the real vector space of smooth functions on , and with T being an element of a Jordan-Lie (Poisson) algebra (http://planetmath.org/JordanBanachAndJordanLieAlgebras) whose definition is also recalled next. Thus, one defines as in classical dynamics the Poisson algebra as a Jordan algebra in which is associative. We recall that one needs to consider first a specific algebra (defined as a vector space over a ground field (typically or )) equipped with a bilinear and distributive multiplication . Then one defines a Jordan algebra (over ), as a a specific algebra over for which:
for all elements of this algebra.
Then, the usual algebraic types of morphisms automorphism, isomorphism, etc.) apply to a Jordan-Lie (Poisson) algebra (http://planetmath.org/JordanBanachAndJordanLieAlgebras) defined as a real vector space together with a Jordan product and Poisson bracket
, satisfying :
-
1.
for all
-
2.
the Leibniz rule holds
for all , along with
-
3.
the Jacobi identity :
-
4.
for some , there is the associator identity :
Thus, the canonical transformations of the Poisson sigma model phase space specified by the Jordan-Lie (Poisson) algebra (http://planetmath.org/JordanBanachAndJordanLieAlgebras) (also Poisson algebra), which is determined by both the Poisson bracket and the Jordan product , define a Hamiltonian algebroid with the Lie brackets related to such a Poisson structure on the target space.
Title | Hamiltonian algebroids |
Canonical name | HamiltonianAlgebroids |
Date of creation | 2013-03-22 18:13:44 |
Last modified on | 2013-03-22 18:13:44 |
Owner | bci1 (20947) |
Last modified by | bci1 (20947) |
Numerical id | 42 |
Author | bci1 (20947) |
Entry type | Topic |
Classification | msc 81P05 |
Classification | msc 81R15 |
Classification | msc 81R10 |
Classification | msc 81R05 |
Classification | msc 81R50 |
Synonym | quantum algebroid |
Related topic | HamiltonianOperatorOfAQuantumSystem |
Related topic | JordanBanachAndJordanLieAlgebras |
Related topic | LieBracket |
Related topic | LieAlgebroids |
Related topic | QuantumGravityTheories |
Related topic | Algebroids |
Related topic | RCategory |
Related topic | RAlgebroid |
Defines | Hamiltonian algebroid |
Defines | Jordan algebra |
Defines | Poisson algebra |