Results 11 to 20 of about 659,749 (230)

Unitary Howe dualities in fermionic and bosonic algebras and related Dirac operators

open access: yesSciPost Physics Proceedings, 2023
In this paper we use the canonical complex structure $\mathbb{J}$ on $\mathbb{R}^{2n}$ to introduce a twist of the symplectic Dirac operator. This can be interpreted as the bosonic analogue of the Dirac operators on a Hermitian manifold.
Guner Muarem
doaj   +1 more source

Covariantization of quantized calculi over quantum groups [PDF]

open access: yesMathematica Bohemica, 2020
We introduce a method for construction of a covariant differential calculus over a Hopf algebra $A$ from a quantized calculus $da=[D,a]$, $a\in A$, where $D$ is a candidate for a Dirac operator for $A$.
Seyed Ebrahim Akrami, Shervin Farzi
doaj   +1 more source

The Dirac Sea, T and C Symmetry Breaking, and the Spinor Vacuum of the Universe

open access: yesUniverse, 2021
We have developed a quantum field theory of spinors based on the algebra of canonical anticommutation relations (CAR algebra) of Grassmann densities in the momentum space. We have proven the existence of two spinor vacua.
Vadim Monakhov
doaj   +1 more source

The generalized relativistic harmonic oscillator with the Snyder-de Sitter algebra

open access: yesResults in Physics, 2023
The Snyder-de Sitter (SdS) algebra is a model of non-commutative space–time admitting three fundamental parameters: the speed of light, the Planck mass and the cosmological constant, and therefore can be seen as an example of triply special relativity ...
A. Andolsi   +3 more
doaj   +1 more source

Internal quark symmetries and colour SU(3) entangled with Z3-graded Lorentz algebra

open access: yesNuclear Physics B, 2021
In the current version of QCD the quarks are described by ordinary Dirac fields, organized in the following internal symmetry multiplets: the SU(3) colour, the SU(2) flavour, and broken SU(3) providing the family triplets.
Richard Kerner, Jerzy Lukierski
doaj   +1 more source

"Minimal geometric data" approach to Dirac algebra, spinor groups and field theories [PDF]

open access: yes, 2007
The first three sections contain an updated, not-so-short account of a partly original approach to spinor geometry and field theories introduced by Jadczyk and myself [3–5]; it is based on an intrinsic treatment of 2-spinor geometry in which the needed ...
D. Canarutto
semanticscholar   +1 more source

Seminormal systems of operators in Clifford environments [PDF]

open access: yesOpuscula Mathematica, 2017
The primary goal of our article is to implement some standard spin geometry techniques related to the study of Dirac and Laplace operators on Dirac vector bundles into the multidimensional theory of Hilbert space operators.
Mircea Martin
doaj   +1 more source

The 2D κ-Dirac oscillator

open access: yesPhysics Letters B, 2014
In this Letter, 2D Dirac oscillator in the quantum deformed framework generated by the κ-Poincaré–Hopf algebra is considered. The problem is formulated using the κ-deformed Dirac equation. The resulting theory reveals that the energies and wave functions
Fabiano M. Andrade, Edilberto O. Silva
doaj   +1 more source

Construction of Discrete Symmetries Using the Pauli Algebra Form of the Dirac Equation

open access: yesPhysical Sciences Forum, 2023
Two equations whose variables take values in the Pauli algebra of complex quaternions are shown to be equivalent to the standard Dirac equation and its Hermitian conjugate taken together.
Avraham Nofech
doaj   +1 more source

Relating the topology of Dirac Hamiltonians to quantum geometry: When the quantum metric dictates Chern numbers and winding numbers [PDF]

open access: yesSciPost Physics, 2021
Quantum geometry has emerged as a central and ubiquitous concept in quantum sciences, with direct consequences on quantum metrology and many-body quantum physics. In this context, two fundamental geometric quantities are known to play complementary roles:
B. Mera, Anwei Zhang, N. Goldman
semanticscholar   +1 more source

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