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This paper is meant to be an informative introduction to spinor representations of Clifford algebras. In this paper we will have a look at Clifford algebras and the octonion algebra. We begin the paper looking at the quaternion algebra…

Representation Theory · Mathematics 2019-06-28 Ricardo Suarez

The theory of representations of Clifford algebras is extended to employ the division algebra of the octonions or Cayley numbers. In particular, questions that arise from the non-associativity and non-commutativity of this division algebra…

High Energy Physics - Theory · Physics 2015-06-26 Jörg Schray , Corinne A. Manogue

Real Clifford algebras for arbitrary number of space and time dimensions as well as their representations in terms of spinors are reviewed and discussed. The Clifford algebras are classified in terms of isomorphic matrix algebras of real,…

High Energy Physics - Theory · Physics 2019-08-07 Stefan Floerchinger

We give a one dimensional octonionic representation of the different Clifford algebra Cliff(5,5)\sim Cliff(9,1), Cliff(6,6)\sim Cliff(10,2) and lastly Cliff(7,6)\sim Cliff(10,3) which can be given by (8x8) real matrices taking into account…

High Energy Physics - Theory · Physics 2011-07-19 Khaled Abdel-Khalek

Given a real representation of the Clifford algebra corresponding to $R^{p+q}$ with metric of signature $(p,q)$, we demonstrate the existence of two natural bilinear forms on the space of spinors. With the Clifford action of $k$-forms on…

General Relativity and Quantum Cosmology · Physics 2013-07-22 Eric O. Korman , George Sparling

We show that complex representations of Clifford algebra can always be reduced either to a real or to a quaternionic algebra depending on signature of complex space thus showing that complex spinors are unavoidably either real Majorana…

Mathematical Physics · Physics 2019-04-05 Marco Budinich

In these lectures, we discuss some well-known facts about Clifford algebras: matrix representations, Cartan's periodicity of 8, double coverings of orthogonal groups by spin groups, Dirac equation in different formalisms, spinors in $n$…

Mathematical Physics · Physics 2018-01-23 D. S. Shirokov

Quaternionic and octonionic realizations of Clifford algebras and spinors are classified and explicitly constructed in terms of recursive formulas. The most general free dynamics in arbitrary signature space-times for both quaternionic and…

High Energy Physics - Theory · Physics 2009-11-10 H. L. Carrion , M. Rojas , F. Toppan

In this paper, theory and construction of spinor representations of real Clifford algebras $\cl_{p,q}$ in minimal left ideals are reviewed. Connection with a general theory of semisimple rings is shown. The actual computations can be found…

Rings and Algebras · Mathematics 2016-10-11 Rafal Ablamowicz

We study briefly some properties of real Clifford algebras and identify them as matrix algebras. We then show that the representation space on which Clifford algebras act are spinors and we study in details matrix representations. The…

High Energy Physics - Theory · Physics 2007-05-23 M. Rausch de Traubenberg

We give a one dimensional octonionic representation of the different Clifford algebra $Cliff(5,5)\sim Cliff(1,9), Cliff(6,6)\sim Cliff(2,10)$ and lastly $Cliff(7,6)\sim Cliff(3,10)$.

Mathematical Physics · Physics 2008-11-06 Khaled Abdel-Khalek

The modern algebra concepts are used to construct tables of algebraic spinors related to Clifford algebra multivectors with real and complex coefficients. The following data computed by Mathematica are presented in form of tables for…

Mathematical Physics · Physics 2024-12-20 A. Acus , A. Dargys

The infinite dimensional Clifford Algebra has a maze of irreducible unitary representations. Here we determine their type -real, complex or quaternionic. Some, related to the Fermi-Fock representations, have no real or quetrnionic…

Representation Theory · Mathematics 2016-09-07 Esther Galina , Aroldo Kaplan , Linda Saal

We provide a recipe for building explicit representations of the real Clifford algebras once an explicit family is given in dimensions $1$ through $4$. We further give an explicit construction of spin coordinate systems for a given real…

Differential Geometry · Mathematics 2025-05-23 Jesus Sanchez

Real Clifford algebras play a fundamental role in the eight real Altland-Zirnbauer symmetry classes and the classification tables of topological phases. Here, we present another elegant realization of real Clifford algebras in the…

Mesoscale and Nanoscale Physics · Physics 2022-09-14 Yue-Xin Huang , Z. Y. Chen , Xiaolong Feng , Shengyuan A. Yang , Y. X. Zhao

Supergroups are defined in the framework of $\dZ_2$-graded Clifford algebras over the fields of real and complex numbers, respectively. It is shown that cyclic structures of complex and real supergroups are defined by Brauer-Wall groups…

Mathematical Physics · Physics 2014-10-03 V. V. Varlamov

This article uses Clifford algebra of definite signature to derive octonions and the Lie exceptional algebra G2 from calibrations using Pin(7). This is simpler than the usual exterior algebra derivation and uncovers a subalgebra of Spin(7)…

Rings and Algebras · Mathematics 2025-05-12 G. P. Wilmot

Finite-dimensional representations of the proper orthochronous Lorentz group are studied in terms of spinor representations of the Clifford algebras. The Clifford algebras are understood as an `algebraic covering' of a full system of the…

Mathematical Physics · Physics 2007-05-23 Vadim V. Varlamov

We generalize the concept of cubic group into any dimension and derive their conjugate classifications and representation theorys. Double group and spinor representation are defined. A detailed calculation is carried out on the structures…

High Energy Physics - Lattice · Physics 2007-05-23 Jian Dai , Xing-Chang Song

In this work we explore the structure of Clifford algebras and the representations of the algebraic spinors in quantum information theory. Initially we present an general formulation through elements of left minimal ideals in tensor…

Mathematical Physics · Physics 2021-02-03 Marco A. S. Trindade , Sergio Floquet , J. D. M. Vianna
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