Search results
Results from the WOW.Com Content Network
The classification of the irreducible infinite-dimensional representations of the Lorentz group was established by Paul Dirac's doctoral student in theoretical physics, Harish-Chandra, later turned mathematician, [nb 3] in 1947.
In physics and mathematics, the Lorentz group is the group of all Lorentz transformations of Minkowski spacetime, the classical and quantum setting for all (non-gravitational) physical phenomena. The Lorentz group is named for the Dutch physicist Hendrik Lorentz. For example, the following laws, equations, and theories respect Lorentz symmetry:
In mathematics and theoretical physics, a representation of a Lie group is a linear action of a Lie group on a vector space.Equivalently, a representation is a smooth homomorphism of the group into the group of invertible operators on the vector space.
Since the orthogonal group is a subgroup of the general linear group, representations of () can be decomposed into representations of (). The decomposition of a tensor representation is given in terms of Littlewood-Richardson coefficients c λ , μ ν {\displaystyle c_{\lambda ,\mu }^{\nu }} by the Littlewood restriction rule [ 12 ]
It was a key step towards the modern classification scheme of particle types, according to which particle types are partly characterized by which representation of the Lorentz group under which it transforms. The Lorentz group is a symmetry group of every relativistic quantum field theory. Wigner's early work laid the ground for what many ...
Tung, Wu-Ki (1985). "Chapter 10. Representations of the Lorentz group and of the Poincare group; Wigner classification". Group Theory in Physics. World Scientific Publishing Company. ISBN 978-9971966577. Weinberg, S. (2002). "Chapter 2. Relativistic quantum mechanics". The Quantum Theory of Fields. Vol. I. Cambridge University Press. ISBN 0-521 ...
Note that a "complex Lie group" is defined as a complex analytic manifold that is also a group whose multiplication and inversion are each given by a holomorphic map. The dimensions in the table below are dimensions over C. Note that every complex Lie group/algebra can also be viewed as a real Lie group/algebra of twice the dimension.
A representation of a group induces a representation of a corresponding group ring or group algebra, while representations of a Lie algebra correspond bijectively to representations of its universal enveloping algebra. However, the representation theory of general associative algebras does not have all of the nice properties of the ...