English
Related papers

Related papers: Universal $\kappa$-Poincar\'e covariant differenti…

200 papers

Classification of differential forms on $\kappa$-Minkowski space, particularly, the classification of all bicovariant differential calculi of classical dimension is presented. By imposing super-Jacobi identities we derive all possible…

High Energy Physics - Theory · Physics 2015-07-23 Tajron Juric , Stjepan Meljanac , Danijel Pikutic , Rina Strajn

We analyze bicovariant differential calculus on $\kappa$-Minkowski spacetime. It is shown that corresponding Lorentz generators and noncommutative coordinates compatible with bicovariant calculus cannot be realized in terms of commutative…

High Energy Physics - Theory · Physics 2015-06-12 Tajron Jurić , Stjepan Meljanac , Rina Štrajn

We propose a generalized description for the kappa-Poincare-Hopf algebra as a symmetry quantum group of underlying kappa-Minkowski spacetime. We investigate all the possible implementations of (deformed) Lorentz algebras which are…

High Energy Physics - Theory · Physics 2012-04-27 D. Kovacevic , S. Meljanac , A. Pachol , R. Strajn

In the present paper we construct deformations of the Poincar\'e algebra as representations on a noncommutative spacetime with canonical commutation relations. These deformations are obtained by solving a set of conditions by an appropriate…

High Energy Physics - Theory · Physics 2009-11-10 Florian Koch , Efrossini Tsouchnika

The deformations of the Galilei algebra and their associated noncommutative Newtonian spacetimes are investigated. This is done by analyzing the possible nonrelativistic limits of an eleven generator (pseudo)extended \kap-Poincar\'e algebra…

q-alg · Mathematics 2011-07-28 J. A. de Azcarraga , J. C. Perez Bueno

We construct realizations of the generators of the $\kappa$-Minkowski space and $\kappa$-Poincar\'{e} algebra as formal power series in the $h$-adic extension of the Weyl algebra. The Hopf algebra structure of the $\kappa$-Poincar\'{e}…

Mathematical Physics · Physics 2015-05-18 Stjepan Meljanac , Sasa Kresic-Juric

We deform Heisenberg algebra and corresponding coalgebra by twist. We present undeformed and deformed tensor identities. Coalgebras for the generalized Poincar\'{e} algebras have been constructed. The exact universal $R$-matrix for the…

Mathematical Physics · Physics 2015-06-04 Stjepan Meljanac , Andjelo Samsarov , Rina Strajn

We unify kappa-Minkowki spacetime and Lorentz algebra in unique Lie algebra. Introducing commutative momenta, a family of kappa-deformed Heisenberg algebras and kappa-deformed Poincare algebras are defined. They are specified by the matrix…

Mathematical Physics · Physics 2015-05-30 Domagoj Kovačević , Stjepan Meljanac

We present Lie-algebraic deformations of Minkowski space with undeformed Poincar\'{e} algebra. These deformations interpolate between Snyder and $\kappa$-Minkowski space. We find realizations of noncommutative coordinates in terms of…

Mathematical Physics · Physics 2011-03-21 Stjepan Meljanac , Daniel Meljanac , Andjelo Samsarov , Marko Stojic

Twisted deformations of the conformal symmetry in the Hopf algebraic framework are constructed. The first one is obtained by a Jordanian twist built up from dilatation and momenta generators. The second is the light-like…

High Energy Physics - Theory · Physics 2015-11-18 Stjepan Meljanac , Anna Pachol , Danijel Pikutic

The $\kappa$-deformed $D=4$ Poincar{\'e} superalgebra written in Hopf superalgebra form is transformed to the basis with classical Lorentz subalgebra generators. We show that in such a basis the $\kappa$-deformed $D=4$ Poincare superalgebra…

High Energy Physics - Theory · Physics 2009-10-28 P. Kosi{ń}ski , J. Lukierski , P. Ma{ś}lanka , J. Sobczyk

We present Lie-algebraic deformations of Minkowski space with undeformed Poincare algebra. These deformations interpolate between Snyder and kappa-Minkowski space. We find realizations of noncommutative coordinates in terms of commutative…

High Energy Physics - Theory · Physics 2010-04-30 S. Meljanac , D. Meljanac , A. Samsarov , M. Stojic

Some classes of Deformed Special Relativity (DSR) theories are reconsidered within the Hopf algebraic formulation. For this purpose we shall explore a minimal framework of deformed Weyl-Heisenberg algebras provided by a smash product…

Mathematical Physics · Physics 2010-10-27 Andrzej Borowiec , Anna Pachoł

We extend our previous study of Hopf-algebraic $\kappa$-deformations of all inhomogeneous orthogonal Lie algebras ${\rm iso}(g)$ as written in a tensorial and unified form. Such deformations are determined by a vector $\tau$ which for…

Mathematical Physics · Physics 2014-12-02 Andrzej Borowiec , Anna Pachol

We propose canonical and Lie-algebraic twist deformations of $\kappa$-deformed Poincare Hopf algebra which leads to the generalized $\kappa$-Minkowski space-time relations. The corresponding deformed $\kappa$-Poincare quantum groups are…

Mathematical Physics · Physics 2009-03-12 Marcin Daszkiewicz

In this paper we study the deformed statistics and oscillator algebras of quantum fields defined in $\kappa$-Minkowski spacetime. The twisted flip operator obtained from the twist associated with the star product requires an enlargement of…

High Energy Physics - Theory · Physics 2009-08-13 T. R. Govindarajan , Kumar S. Gupta , E. Harikumar , S. Meljanac , D. Meljanac

Realizations of $\kappa$-Minkowski space linear in momenta are studied for time-, space- and light-like deformations. We construct and classify all such linear realizations and express them in terms of $\mathfrak{gl}(n)$ generators. There…

High Energy Physics - Theory · Physics 2015-11-11 Tajron Juric , Stjepan Meljanac , Danijel Pikutic

We present Lie-algebraic deformations of Minkowski space with undeformed Poincar\'{e} algebra. These deformations interpolate between Snyder and $\kappa$-Minkowski space. We find realizations of noncommutative coordinates in terms of…

Mathematical Physics · Physics 2009-09-11 S. Meljanac , D. Meljanac , A. Samsarov , M. Stojic

We show that the $\kappa$-deformed Poincar\'e quantum algebra proposed for elementary particle physics has the structure of a Hopf agebra bicrossproduct $U(so(1,3))\cobicross T$. The algebra is a semidirect product of the classical Lorentz…

High Energy Physics - Theory · Physics 2009-10-28 Shahn Majid , Henri Ruegg

We investigate a Lie algebra-type $ \kappa$-deformed Minkowski space-time with undeformed Lorentz algebra and mutually commutative vector-like Dirac derivatives. There are infinitely many realizations of $ \kappa$-Minkowski space. The…

High Energy Physics - Theory · Physics 2008-11-26 S. Meljanac , A. Samsarov , M. Stojic , K. S. Gupta
‹ Prev 1 2 3 10 Next ›