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The Yang model is an example of noncommutative geometry on a background spacetime of constant curvature. We discuss the Hermitian realizations of its associated algebra on phase space in a perturbative expansion up to sixth order. We also…

High Energy Physics - Theory · Physics 2023-05-09 T. Martinic-Bilac , S. Meljanac , S. Mignemi

Long time ago, C.N. Yang proposed a model of noncommutative spacetime that generalized the Snyder model to a curved background. In this paper we review his proposal and the generalizations that have been suggested during the years. In…

General Relativity and Quantum Cosmology · Physics 2023-03-08 S. Meljanac , S. Mignemi

A long time ago C.N. Yang proposed a generalization of the Snyder model to the case of a curved background spacetime, based on an algebra isomorphic to $so(1,5)$, which includes as subalgebras both the Snyder and the de Sitter algebras. His…

High Energy Physics - Theory · Physics 2025-04-01 S. Mignemi

The relativistic $D=4$ Snyder model is formulated in terms of $D=4$ $dS$ algebra $o(4,1)$ generators, with noncommutative Lorentz-invariant Snyder quantum space-time provided by $\frac{O(4,1)}{O(3,1)}$ coset generators. Analogously, in…

High Energy Physics - Theory · Physics 2022-04-19 Jerzy Lukierski , Mariusz Woronowicz

The Yang algebra was proposed a long time ago as a generalization of the Snyder algebra to the case of curved background spacetime. It includes as subalgebras both the Snyder and the de Sitter algebras and can therefore be viewed as a model…

High Energy Physics - Theory · Physics 2024-04-03 T. Martinić-Bilać , S. Meljanac , S. Mignemi

Recently it was shown that by using two different realizations of $\hat{o}(1,4)$ Lie algebra one can describe one-parameter standard Snyder model and two-parameter $\kappa$-deformed Snyder model. In this paper, by using the generalized Born…

High Energy Physics - Theory · Physics 2024-08-08 Jerzy Lukierski , Anna Pachoł

We study the Yangian symmetry of the multicomponent Quantum Nonlinear Schrodinger hierarchy in the framework of the Quantum Inverse Scattering Method. We give an explicit realization of the Yangian generators in terms of the deformed…

High Energy Physics - Theory · Physics 2008-11-26 M. Mintchev , E. Ragoucy , P. Sorba , Ph Zaugg

We discuss, at leading order in $\hbar$, the quantum mechanics of a specific realization in phase space of the Yang model describing noncommutative geometry in a curved background. In particular, we show how the deformation of the…

High Energy Physics - Theory · Physics 2025-05-06 S. Meljanac , S. Mignemi

Noncommutative field theory on Yang's quantized space-time algebra (YSTA) is studied. It gives a theoretical framework to reformulate the matrix model as quantum mechanics of $D_0$ branes in a Lorentz-covariant form. The so-called kinetic…

High Energy Physics - Theory · Physics 2007-05-23 Sho Tanaka

In this article the geometry of quantum gravity is quantized in the sense of being noncommutative (first quantization) but it is also quantized in the sense of being emergent (second quantization). A new mechanism for quantum geometry is…

High Energy Physics - Theory · Physics 2022-06-29 Badis Ydri , Ramda Khaled , Cherine Soudani

The symplectic geometry of the phase space associated with a charged particle is determined by the addition of the Faraday 2-form to the standard structure on the Euclidean phase space. In this paper we describe the corresponding algebra of…

Quantum Physics · Physics 2009-11-10 M. V. Karasev , T. A. Osborn

The relativistic Lorentz-covariant quantum space-times obtained by Snyder can be described by the coset generators of (anti) de-Sitter algebras. Similarly, the Lorentz-covariant quantum phase spaces introduced by Yang, which contain…

High Energy Physics - Theory · Physics 2022-01-05 Jerzy Lukierski , Mariusz Woronowicz

Noncommutative geometry allows to unify the basic building blocks of particle physics, Yang-Mills-Higgs theory and General relativity, into a single geometrical framework. The resulting effective theory constrains the couplings of the…

High Energy Physics - Phenomenology · Physics 2013-05-15 Christoph A. Stephan

These lectures notes are an intoduction for physicists to several ideas and applications of noncommutative geometry. The necessary mathematical tools are presented in a way which we feel should be accessible to physicists. We illustrate…

High Energy Physics - Theory · Physics 2008-02-03 Giovanni Landi

A detailed description of the infinite-dimensional Lie algebra of star-gauge transformations in noncommutative Yang-Mills theory is presented. Various descriptions of this algebra are given in terms of inner automorphisms of the underlying…

High Energy Physics - Theory · Physics 2009-11-07 F. Lizzi , R. J. Szabo , A. Zampini

We illustrate an isomorphic representation of the observable algebra for quantum mechanics in terms of the functions on the projective Hilbert space, and its Hilbert space analog, with a noncommutative product in terms of explicit…

Quantum Physics · Physics 2022-02-09 Otto C. W. Kong , Wei-Yin Liu

Yang-Baxterising a braid group representation associated with multideformed version of $GL_{q}(N)$ quantum group and taking the corresponding $q\rightarrow 1$ limit, we obtain a rational $R$-matrix which depends on $\left ( 1+ {N(N-1) \over…

High Energy Physics - Theory · Physics 2016-09-06 B. Basu-Mallick , P. Ramadevi

In our previous publications we have developed some elements of Noncommutative calculus on the enveloping algebras of $A_m$ type, in particular, analogs of the partial derivatives and de Rham complex were defined. Also, we introduced the…

Quantum Algebra · Mathematics 2024-03-05 Dimitry Gurevich , Pavel Saponov

We show an algebra morphism between Yangians and some finite W-algebras. This correspondence is nicely illustrated in the framework of the Non Linear Schrodinger hierarchy. For such a purpose, we give an explicit realization of the Yangian…

High Energy Physics - Theory · Physics 2015-06-26 M. Mintchev , E. Ragoucy , P. Sorba , Ph. Zaugg

The status of several representative gauge theories on various quantum space-times, mainly focusing on Yang-Mills type extensions together with a few matrix model formulations is overviewed. The common building blocks are derivation based…

High Energy Physics - Theory · Physics 2025-10-23 Jean-Christophe Wallet
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