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In this paper the notion of Dirac structure in finite dimension is extended to the convenient setting. In particular, we introduce the notion of partial Dirac structure on convenient Lie algebroids and manifolds. We then look for those…

Differential Geometry · Mathematics 2024-09-23 Fernand Pelletier , Patrick Cabau

In this note we present some properties of the Dirac operator on noncompact metric graphs with Kirchoff-type vertex conditions. In particular, we discuss the specific features of the spectrum of the operator and, finally, we give some…

Analysis of PDEs · Mathematics 2021-02-08 William Borrelli , Raffaele Carlone , Lorenzo Tentarelli

We present new results on the block-diagonalization of Dirac operators on three-dimensional Euclidean space with unbounded potentials. Classes of admissible potentials include electromagnetic potentials with strong Coulomb singularities and…

Spectral Theory · Mathematics 2014-04-04 Jean-Claude Cuenin

On conformal manifolds of even dimension $n\geq 4$ we construct a family of new conformally invariant differential complexes. Each bundle in each of these complexes appears either in the de Rham complex or in its dual. Each of the new…

Differential Geometry · Mathematics 2007-05-23 Thomas Branson , A. Rod Gover

A simple minded approach to implement three discretizations of the Dirac operator (staggered, Wilson, Brillouin) on two architectures (KNL and core i7) is presented. The idea is to use a high-level compiler along with OpenMP parallelization…

High Energy Physics - Lattice · Physics 2018-11-21 Stephan Durr

First, we review the Dirac operator folklore about basic analytic and geometrical properties of operators of Dirac type on compact manifolds with smooth boundary and on closed partitioned manifolds and show how these properties depend on…

Differential Geometry · Mathematics 2009-11-23 Bernhelm Booss-Bavnbek , Matthias Lesch

We apply the Cartan-Kahler theorem for the k-Dirac operator studied in Clifford analysis and to the parabolic version of this operator. We show that for k = 2 the tableaux of the first prolongations of these two operators are involutive.…

Differential Geometry · Mathematics 2019-08-06 Tomas Salac

We present the recent works \cite{trisetyarso2011} on the application of Darboux transformation on one-dimensional Dirac equation related to the field of Quantum Information and Computation (QIC). The representation of physical system in…

Quantum Physics · Physics 2015-03-17 Agung Trisetyarso

We define an analogue of the Dirac operator for the degenerate affine Hecke-Clifford algebra. A main result is to relate the central characters of the degenerate affine Hecke-Clifford algebra with the central characters of the Sergeev…

Representation Theory · Mathematics 2015-04-28 Kei Yuen Chan

Basically (2 + 1) dimensional Dirac equation with real deformed Lorentz scalar potential is investi gated in this study. The position dependent Fermi velocity function transforms Dirac Hamiltonian into a Klein-Gordon-like effective…

Mathematical Physics · Physics 2018-08-01 O. Yesiltas , B. Cagatay

In this paper, we classify all unitary representations with non-zero Dirac cohomology for complex Lie group of Type E8. This completes the classification of Dirac series for all complex simple Lie groups.

Representation Theory · Mathematics 2026-04-22 Dan Barbasch , Kayue Daniel Wong

We present an approach to higher dimensional Darboux transformations suitable for application to quantum integrable systems and based on the bispectral property of partial differential operators. Specifically, working with the…

Mathematical Physics · Physics 2007-05-23 Emil Horozov , Alex Kasman

The notion of Dirac cones, wherein two or more bands become degenerate at a certain momentum, is the starting point for the study of topological phases. Dirac cones have been thoroughly explored in fermionic systems such as graphene, Weyl…

Mesoscale and Nanoscale Physics · Physics 2020-07-15 P. Sathish Kumar , R. Ganesh

We apply Dirac's square root idea to constraints for embedded 4-geometries swept by a 3-dimensional membrane. The resulting Dirac-like equation is then analyzed for general coordinates as well as for the case of a Friedmann-Robertson-Walker…

High Energy Physics - Theory · Physics 2013-03-26 Maciej Trzetrzelewski

In the presence of a non-vanishing chemical potential the eigenvalues of the Dirac operator become complex. We calculate spectral correlation functions of complex eigenvalues using a random matrix model approach. Our results apply to…

High Energy Physics - Theory · Physics 2009-11-07 G. Akemann

The Dirac-Dolbeault operator for a compact K\"ahler manifold is a special case of a Dirac operator. The Green function for the Dirac Laplacian over a Riemannian manifold with boundary allows to express the values of the sections of the…

Differential Geometry · Mathematics 2024-07-15 Simone Farinelli

We prove an important property of the binomial transform: it converts multiplication by the discrete variable into a certain difference operator. We also consider the case of dividing by the discrete variable. The properties presented here…

Number Theory · Mathematics 2017-02-03 Khristo N. Boyadzhiev

We determine conditions for the quantisation of graphs using the Dirac operator for both two and four component spinors. According to the Bohigas-Giannoni-Schmit conjecture for such systems with time-reversal symmetry the energy level…

Chaotic Dynamics · Physics 2009-11-07 Jens Bolte , Jonathan Harrison

We construct spectral triples on all Podles quantum spheres. These noncommutative geometries are equivariant for a left action of $U_q(su(2))$ and are regular, even and of metric dimension 2. They are all isospectral to the undeformed round…

Quantum Algebra · Mathematics 2007-05-23 Ludwik Dabrowski , Francesco D'Andrea , Giovanni Landi , Elmar Wagner

We study the notion of a Dirac operator in the framework of twist-deformed noncommutative geometry. We provide a number of well-motivated candidate constructions and propose a minimal set of axioms that a noncommutative Dirac operator…

High Energy Physics - Theory · Physics 2013-12-17 Alexander Schenkel , Christoph F. Uhlemann