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- Angel Ballesteros, Orlando Ragnisco
- 1998

A universal algorithm to construct N -particle (classical and quantum) completely integrable Hamiltonian systems from representations of coalgebras with Casimir element is presented. In particular,… (More)

Multiparametric quantum deformations of gl(2) are studied through a complete classification of gl(2) Lie bialgebra structures. From them, the nonrelativistic limit leading to harmonic oscillator Lie… (More)

- Angel Ballesteros, Francisco J. Herranz, Fabio Musso, Orlando Ragnisco
- 2004

A constructive procedure to obtain superintegrable deformations of the classical Smorodinsky–Winternitz Hamiltonian by using quantum deformations of its underlying Poisson sl(2) coalgebra symmetry is… (More)

All coboundary Lie bialgebras and their corresponding Poisson–Lie structures are constructed for the oscillator algebra generated by {N, A + , A − , M }. Quantum oscillator algebras are derived from… (More)

- Arturo Muñoz, Angel Ballesteros, J A Brandáriz Castelo
- AJNR. American journal of neuroradiology
- 1998

We report the sudden development of an inflammatory process thought to be of the floor of the mouth with subsequent involvement of the respiratory airway. MR imaging showed an enhancing posterior… (More)

- Angel Ballesteros, Francisco J. Herranz, Mariano Santander, Teresa Sanz-Gil
- 2008

A unified algebraic construction of the classical Smorodinsky–Winternitz systems on the ND sphere, Euclidean and hyperbolic spaces through the Lie groups SO(N + 1), ISO(N), and SO(N, 1) is presented.… (More)

A quantum deformation of the conformal algebra of the Minkowskian spacetime in (3 + 1) dimensions is identified with a deformation of the (4 + 1)-dimensional AdS algebra. Both Minkowskian and AdS… (More)

A new quantum deformation, which we call null-plane, of the (3+1) Poincaré algebra is obtained. The algebraic properties of the classical null-plane description are generalized to this quantum… (More)

The Lie bialgebras of the (1+1) extended Galilei algebra are obtained and classified into four multiparametric families. Their quantum deformations are obtained, together with the corresponding… (More)

A Gelfan’d–Dyson mapping is used to generate a one-boson realization for the non-standard quantum deformation of sl(2, IR) which directly provides its infinite and finite dimensional irreducible… (More)