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Related papers: On equivariant Dirac operators for $SU_q(2)$

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We construct the product of real spectral triples of arbitrary finite dimension (and arbitrary parity) taking into account the fact that in the even case there are two possible real structures, in the odd case there are two inequivalent…

Mathematical Physics · Physics 2012-03-20 Ludwik Dabrowski , Giacomo Dossena

The quasi-SU(3) symmetry, as found in shell model calculations, refers to the dominance of the single particle plus quadrupole-quadrupole terms in the Hamiltonian used to describe well deformed nuclei, and to the subspace relevant in its…

Nuclear Theory · Physics 2007-05-23 C. E. Vargas , J. G. Hirsch , J. P. Draayer

The quantum version of the Bernstein-Gelfand-Gelfand resolution is used to construct a Dolbeault-Dirac operator on the anti-holomorphic forms of the Heckenberger-Kolb calculus for the $B_2$-irreducible quantum flag manifold. The spectrum…

Quantum Algebra · Mathematics 2021-09-22 Fredy Díaz García , Réamonn Ó Buachalla , Elmar Wagner

We consider the Dirac operator on right triangles, subject to infinite-mass boundary conditions. We conjecture that the lowest positive eigenvalue is minimised by the isosceles right triangle both under the area or perimeter constraints. We…

Spectral Theory · Mathematics 2023-04-12 Tuyen Vu

We prove that each action of a compact matrix quantum group on a compact quantum space can be decomposed into irreducible representations of the group. We give the formula for the corresponding multiplicities in the case of the quotient…

High Energy Physics - Theory · Physics 2009-10-28 Piotr Podleś

This paper establishes a link between Noncommutative Geometry and canonical quantum gravity. A semi-finite spectral triple over a space of connections is presented. The triple involves an algebra of holonomy loops and a Dirac type operator…

High Energy Physics - Theory · Physics 2009-11-13 Johannes Aastrup , Jesper M. Grimstrup , Ryszard Nest

Based on the observation that Cacic [10]'s characterization of almost commutative spectral triples as Clifford module bundles can be pushed to endomorphim algebras of Dirac bundles, with the geometric Dirac operator related to the Dirac…

Operator Algebras · Mathematics 2023-01-18 Sita Gakkhar

A cuprate superconductor model based on the analogy with atomic nuclei was shown by Iachello to have an $su(3)$ structure. The mean-field approximation Hamiltonian can be written as a linear function of the generators of $su(3)$ algebra.…

Other Condensed Matter · Physics 2009-11-11 Shuo Jin , Bing-Hao Xie , Feng Pan , Joseph L. Birman , Mo-Lin Ge

We investigate the spin $1/2$ fermions on quantum two spheres. It is shown that the wave functions of fermions and a Dirac Operator on quantum two spheres can be constructed in a manifestly covariant way under the quantum group $SU(2)_q$.…

High Energy Physics - Theory · Physics 2009-10-28 K. Ohta , H. Suzuki

The Haar functional on the quantum $SU(2)$ group is the analogue of invariant integration on the group $SU(2)$. If restricted to a subalgebra generated by a self-adjoint element the Haar functional can be expressed as an integral with a…

Quantum Algebra · Mathematics 2016-09-06 Erik Koelink , J. Verding

We construct the $q$-deformed Clifford algebra of $\mathfrak{sl}_2$ and study its properties. This allows us to define the $q$-deformed noncommutative Weil algebra $\mathcal{W}_q(\mathfrak{sl}_2)$ for $U_q(\mathfrak{sl}_2)$ and the…

Representation Theory · Mathematics 2025-01-28 Andrey Krutov , Pavle Pandžić

We construct spectral triples for the C^*-algebra of continuous functions on the quantum SU(2) group and the quantum sphere. There has been various approaches towards building a calculus on quantum spaces, but there seems to be very few…

Quantum Algebra · Mathematics 2009-11-07 Partha Sarathi Chakraborty , Arupkumar Pal

We argue that the spectrum of the QCD Dirac operator near zero virtuality can be described by random matrix theory. As in the case of classical random matrix ensembles of Dyson we have three distinct classes: the chiral orthogonal ensemble…

High Energy Physics - Theory · Physics 2011-07-18 Jacobus Verbaarschot

We provide sufficient conditions to factorise an equivariant spectral triple as a Kasparov product of unbounded classes constructed from the group action on the algebra and from the fixed point spectral triple. Our results are for the…

K-Theory and Homology · Mathematics 2015-05-13 Iain Forsyth , Adam Rennie

We construct a family of self-adjoint operators D_N which have compact resolvent and bounded commutators with the coordinate algebra of the quantum projective space CP_q(l), for any l>1 and 0<q<1. They provide 0^+ dimensional equivariant…

Quantum Algebra · Mathematics 2010-06-01 Francesco D'Andrea , Ludwik Dabrowski

We formulate a quantum group analogue of the group of orinetation-preserving Riemannian isometries of a compact Riemannian spin manifold, more generally, of a (possibly $R$-twisted in the sense of a paper of one of the authors, and of…

Quantum Algebra · Mathematics 2008-11-19 Jyotishman Bhowmick , Debashish Goswami

We construct a family of q-deformations of SU(2) for complex parameters q not equal to 0. For real q, the deformation coincides with Woronowicz' compact quantum SU_q(2) group. For q not real, SU_q(2) is only a braided compact quantum group…

Operator Algebras · Mathematics 2024-06-25 Paweł Kasprzak , Ralf Meyer , Sutanu Roy , Stanisław Lech Woronowicz

In this paper, following [1], we develop the theory of global pseudo-differential operators defined on the quantum group $SU_q(2)$, and provide some spectral results concerning these operators. We define a graduation for this algebra of…

Quantum Algebra · Mathematics 2018-04-03 Carlos Andres Rodriguez Torijano

For $\mu \in (0,1), c> 0,$ we identify the quantum group $SO_\mu(3)$ as the universal object in the category of compact quantum groups acting by `orientation and volume preserving isometries' in the sense of \cite{goswami2} on the natural…

Operator Algebras · Mathematics 2010-02-11 Jyotishman Bhowmick , Debashish Goswami

Let SU_q(2) and E_q(2) be Woronowicz' q-deformations of respectively the compact Lie group SU(2) and the non-trivial double cover of the Lie group E(2) of Euclidian transformations of the plane. We prove that, in some sense, their duals are…

Quantum Algebra · Mathematics 2013-08-13 K. De Commer