Results 21 to 30 of about 7,226 (315)

Distributions of Dirac operator eigenvalues [PDF]

open access: yesPhysics Letters B, 2004
The distribution of individual Dirac eigenvalues is derived by relating them to the density and higher eigenvalue correlation functions. The relations are general and hold for any gauge theory coupled to fermions under certain conditions which are stated.
Akemann, G., Damgaard, P.H.
openaire   +5 more sources

Matrix model and Yukawa couplings on the noncommutative torus

open access: yesJournal of High Energy Physics, 2019
The IKKT model is proposed as a non-perturbative formulation of superstring theory. We propose a Dirac operator on the noncommutative torus, which is consistent with the IKKT model, based on noncommutative geometry.
Masaki Honda
doaj   +1 more source

Dirac signal processing of higher-order topological signals

open access: yesNew Journal of Physics, 2023
Higher-order networks can sustain topological signals which are variables associated not only to the nodes, but also to the links, to the triangles and in general to the higher dimensional simplices of simplicial complexes.
Lucille Calmon   +2 more
doaj   +1 more source

DIRAC OPERATOR IN MATRIX GEOMETRY [PDF]

open access: yesInternational Journal of Geometric Methods in Modern Physics, 2005
We review the construction of the Dirac operator and its properties in Riemannian geometry, and show how the asymptotic expansion of the trace of the heat kernel determines the spectral invariants of the Dirac operator and its index. We also point out that the Einstein–Hilbert functional can be obtained as a linear combination of the first two ...
openaire   +3 more sources

Quantized Dirac operators

open access: yesCzechoslovak Journal of Physics, 2000
To appear in the Proceedings of the Quantum Groups And Integrable Systems meeting in Prag, June 22-24 2000.
openaire   +2 more sources

The microscopic dirac operator spectrum [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2002
We review the exact results for microscopic Dirac operator spectra based on either Random Matrix Theory, or, equivalently, chiral Lagrangians. Implications for lattice calculations are discussed.
openaire   +2 more sources

Completeness Theorems for Impulsive Dirac Operator with Discontinuity

open access: yesAxioms
In this work, the discontinuous Dirac operator with weight is studied. We prove the completeness theorems of the system of eigenfunctions for the discontinuous Dirac operator.
Kai Wang   +3 more
doaj   +1 more source

Dirac Operator on Embedded Hypersurfaces [PDF]

open access: yesMathematical Research Letters, 2001
New extrinsic lower bounds are given for the classical Dirac operator on the boundary of a compact domain of a spin manifold. The main tool is to solve some boundary problems for the Dirac operator of the domain under boundary conditions of Atiyah-Patodi-Singer type.
Hijazi, Oussama   +2 more
openaire   +3 more sources

Operator Representation of Fermi-Dirac and Bose-Einstein Integral Functions with Applications

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2007
Fermi-Dirac and Bose-Einstein functions arise as quantum statistical distributions. The Riemann zeta function and its extension, the polylogarithm function, arise in the theory of numbers.
M. Aslam Chaudhry, Asghar Qadir
doaj   +1 more source

Single Pair of Weyl Points Evolve From Spin Group‐Protected Nodal Line in Half‐Metallic Ferromagnet V3S4

open access: yesAdvanced Functional Materials, EarlyView.
A spin group (SG)‐based mechanism is proposed to realize a single pair of Weyl points. PT‐symmetric nodal lines (NLs) persist under T‐breaking, protected by the combination of SG and P symmetry. When considering spin‐orbit coupling, the SG‐protected NL will split into Weyl points, which will also induce anomalous transport phenomena arising from ...
Shifeng Qian   +6 more
wiley   +1 more source

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