Artigos anteriores a 2006

2005

  1. C. J. A. Pires, E. A. O. Saettone, M. Y. Kucinski, A. Vannucci, and R. L. Viana: Magnetic field structure in the TCABR tokamak due to ergodic limiters with a non-uniform current distribution: theoretical and experimental results: Plasma Physics and Controlled Fusion, vol. 47 (2005) pp. 1609-1632. PDF (304 kB),

  2. M. Roberto, E. C. da Silva, I. L. Caldas, and R. L. Viana: Derivation of an analytical area-preserving map to describe transport barriers in tokamaks: Journal of Physics E (Conference Series), Vol. 7 (2005) pp. 163-173 PDF (937 kB),

  3. R. L. Viana, C. Grebogi, S. E. de S. Pinto, S. R. Lopes, A. M. Batista, and J. Kurths: Bubbling bifurcations: loss of synchronization and shadowing breakdown in complex systems: Physica D, Vol. 206, Pages 94-108 (2005). PDF (620 kB),

  4. S. L. T. de Souza, I. L. Caldas, R. L. Viana, A. M. Batista and T. Kapitaniak: Noise-induced basin hopping in a gearbox model: Chaos, Solitons and Fractals, Vol. 26, Pages 1523-1531 (2005). PDF (550 kB),

  5. S. L. T. de Souza, I. L. Caldas, R. L. Viana, J. M. Balthazar, and R. M. F. Brasil: Basins of attraction changes by amplitude constraining of oscillators with limited power supply: Chaos, Solitons and Fractals, Vol .26, Number 4 (November), Pages 1211-1220 (2005). PDF (761 kB),

  6. R. L. Viana, J. R. R. Barbosa, C. Grebogi, and A. M. Batista: Simulating a chaotic process.: Brazilian Journal of Physics, Vol. 35, Number 1 (March) (2005), Pages 139-147. PDF (3.47 MB),

  7. J. D. Szezech Jr., S. R. Lopes, and R. L. Viana: Finite time Lyapunov spectrum for chaotic orbits of non-integrable Hamiltonian systems: Physics Letters A, Vol. 335, Pages 394-401 (2005) PDF (498 kB),

  8. S. L. T. de Souza, I. L. Caldas, R. L. Viana, J. M. Balthazar, and R. M. F. Brasil: Impact dampers for controlling chaos in systems with limited power supply: Journal of Sound and Vibration, Volume 279, Pages 955-967 (2005). PDF (1.03 MB),

  9. J. C. A. de Pontes, A. M. Batista, R. L. Viana, and S. R. Lopes: Short-term memories with a stochastic perturbation.: Chaos, Solitons and Fractals, Vol. 23, Number 5 (March), Pages 1689-1694 (2005). PDF (391 kB),

2004

  1. M. S. T. de Freitas, R. L. Viana, and C. Grebogi: Multi-stability, basin boundary structure, and chaotic behavior in a suspension bridge model: International Journal of Bifurcation and Chaos, Vol. 14, no. 3 (2004) 927-950. PDF (1.4 MB), (featured on the cover)

  2. M. Roberto, E. C. da Silva, I. L. Caldas, and R. L. Viana: Non-twist field line mappings for tokamaks with reversed magnetic shear: Brazilian Journal of Physics (2004), Vol. 34, Number 4B (December) Pages 1759-1765 (2004). PDF (194 kB),

  3. J. C. P. Coninck, S. R. Lopes, and R. L. Viana: Multistability and phase-space structure of dissipative nonlinear parametric four-wave interactions: Physical Review E, Vol. 70, Number 5 (December) Pages 056403-1 to -9 (2004). PDF (173 kB),

  4. M. S. T. de Freitas, R. L. Viana, and C. Grebogi: Basins of attraction of periodic oscillators in suspension bridges: Nonlinear Dynamics (2004), Volume 37, Number 3 (August), Pages 207-226 (2004). PDF (546 kB),

  5. M. Roberto, E. C. da Silva, I. L. Caldas, and R. L. Viana: Transport barrier created by dimerized islands: Physica A, Vol. 342, Pages 363-369 (2004). PDF (388 kB),

  6. J. C. P. Coninck, S. R. Lopes, and R. L. Viana: The presence of an invariant manifold in the dissipative nonlinear four-wave coupling: Physica A (2004) Volume 343, Pages 247-262 PDF (529 kB),

  7. D. B. Vasconcelos, R. L. Viana, S. R. Lopes, A. M. Batista, and S. E. de S. Pinto: Spatial correlations and synchronization in coupled map lattices with long-range interactions: Physica A (2004) Volume 343, Pages 201-218 PDF (1.00 MB)

  8. A. M. dos Santos, S. R. Lopes, and R. L. Viana: Rhythm synchronization and chaotic modulation of coupled van der Pol oscillators in a model for the heartbeat: Physica A (2004) Volume 338, Issues 3-4, 15 July 2004, Pages 335-355 PDF (570 kB),

  9. R. L. Viana, A. S. Fernandes: Colisões elásticas entre duas esferas: um tratamento intermediário para estudantes de graduação: Revista Ciências Exatas e Naturais (2004) Volume 5, No. 2, pp. 221-233, Julho 2004. PDF (311 kB),

  10. C. Anteneodo, A. M. Batista, and R. L. Viana: Chaos synchronization in long-range coupled map lattices: Physics Letters A (2004) Volume 326, Issues 3-4, 7 June 2004, Pages 227-233 PDF,

  11. S. L. T. de Souza, I. L. Caldas, R. L. Viana, and J. M. Balthazar: Sudden changes in chaotic attractors and transient basins in a model for rattling in gearboxes: Chaos, Solitons and Fractals 21 (2004) 763-772. PDF (617 kB),

  12. R. L. Viana, J. R. R. Barbosa, and C. Grebogi: Unstable dimension variability and codimension one bifurcations of two-dimensional maps: Physics Letters A, Vol. 321, 244-251 (2004). PDF (218 kB),

  13. M. Roberto, E. C. da Silva, I. L. Caldas, and R. L. Viana: Magnetic trapping caused by resonant perturbations in tokamaks with reversed magnetic shear: Physics of Plasmas 11, 214-225 (2004). PDF (2.18 MB),

2003

  1. R. L. Viana, C. Grebogi, S. E. de S. Pinto, S. R. Lopes, A. M. Batista, and J. Kurths: Validity of numerical trajectories in the synchronization transition of complex systems: Physical Review E 68, 067204 (2003). PDF (60.8 kB),

  2. C. Anteneodo, S. E. de S. Pinto, A. M. Batista, and R. L. Viana: Analytical results for coupled map lattices with long-range interactions: Physical Review E 68, 045202 (R) (2003). PDF (70.5 kB), Erratum: Phys. Rev. E 69, 045202(E) (2004) PDF (21.3 kB),

  3. R. L. Viana, C. Grebogi, S. E. de S. Pinto, J. R. R. Barbosa: Pseudo-deterministic chaotic systems, International Journal of Bifurcation and Chaos, Vol. 13, Number 11, 3235-3253 (2003). PDF (559 kB),

  4. M. S. T. de Freitas, R. L. Viana, and C. Grebogi: Erosion of the safe basin for the transversal oscillations of a suspension bridge: Chaos, Solitons and Fractals 18, 829-841 (2003). PDF (1.08 MB),

  5. J. S. E. Portela, R. L. Viana, I. L. Caldas: Chaotic magnetic fields in tokamaks with ergodic magnetic limiters: Physica A 317, 411-431 (2003). PDF (3.08 MB),

  6. E. F. Manffra, I. L. Caldas, R. L. Viana: Stabilizing periodic orbits in a chaotic semiconductor laser, Chaos, Solitons and Fractals 15, 327-341 (2003). PDF (1.62 MB)

  7. S. H. C. Marcos, S. R. Lopes, R. L. Viana: Boundary crisis, fractal basin boundaries, and electric power collapses: Chaos, Solitons and Fractals 15, 417-424 (2003). PDF (247 kB),

  8. A. M. Batista, S. E. de S. Pinto, R. L. Viana, and S. R. Lopes: Mode locking in small-world networks of coupled circle maps: Physica A 322, 118-128 (2003). PDF (141 kB),

2002

  1. R. L. Viana, S. E. S. Pinto, C. Grebogi: Chaotic bursting at the onset of unstable dimension variability: Physical Review E 66, 046213 (2002). PDF (125 kB),

  2. A. M. Batista, S. E. de S. Pinto, R. L. Viana, S. R. Lopes: Lyapunov spectrum and synchronization of piecewise linear map lattices with power-law coupling, Physical Review E Vol. 65, Pages 056209 (2002). PDF (352 kB),

  3. E. C. da Silva, I. L. Caldas, R. L. Viana, and M. A. F. Sanjuan: Escape patterns, magnetic footprints, and homoclinic tangles due to ergodic magnetic limiters, Physics of Plasmas Vol. 9, Pages 4917-4928 (2002). PDF (2.3 MB)

  4. I. L. Caldas, R. L. Viana, A. Vannucci, E. C. da Silva, M. S. T. Araujo, K. Ullmann, M. V. A. P. Heller, M. Y. Kucinski: Control of chaotic magnetic fields in Tokamaks: Brazilian Journal of Physics Vol. 32, Pages 980-1004 (2002). PDF (9.8 MB)

  5. A. M. Batista, R. L. Viana: Kolmogorov - Sinai entropy for locally coupled piecewise linear maps, Physica A Vol. 308, Pages 125-134 (2002). PDF (117 kB)

  6. E. C. da Silva, I. L. Caldas e R. L. Viana: Ergodic Magnetic Limiter for the TCABR, Brazilian Journal of Physics, Vol. 32, Pages 39-45 (2002). PDF (6.1 MB),

  7. E. C. da Sliva, I. L. Caldas, R. L. Viana: Bifurcations and onset of chaos on the ergodic magnetic limiter mapping, Chaos, Solitons and Fractals Vol. 14, 403-423 (2002). PDF (1.8 MB)

  8. E. F. Manffra, I. L. Caldas, R. L. Viana, H. J. Kalinowski: Type-I intermittency and crisis-induced intermittency in a semiconductor laser under injection current modulation, Nonlinear Dynamics 27, 185-195 (2002). PDF (473 kB)

  9. A. M. Batista, R. L. Viana: Short-term memories in lattices of inductively coupled AC-driven circuits, Physica A 303, 410-420 (2002). PDF (668 kB)

  10. S. E. de S. Pinto, S. R. Lopes, R. L. Viana: Collective behavior in a chain of van der Pol oscillators with power-law coupling, Physica A 303, 339-356 (2002). PDF (380 kB)

2001

  1. R. L. Viana: Adiabatic plasma rotations in orthogonal coordinate systems, Brazilian Journal of Physics Vol. 31, pp. 58 (2001); PDF (202 kB),

  2. R. L. Viana, C. Grebogi: Riddled basins and unstable dimension variability in chaotic systems with and without symmetry, International Journal of Bifurcation and Chaos Vol. 11, pp. 2689 (2001); PDF (820 kB),

  3. E. C. da Silva, I. L. Caldas, R. L. Viana: Field line diffusion and loss in a Tokamak with an ergodic magnetic limiter, Physics of Plasmas, Vol. 8, Number 6(2001), pp. 2855-2865. PDF (515 kB),

  4. E. C. da Silva, I. L. Caldas, R. L. Viana: The structure of chaotic magnetic field lines in a Tokamak with external nonsymmetric magnetic perturbations, IEEE Transactions on Plasma Science, Vol. 29, pp. 617 (2001); PDF (537 kB),

  5. A. M. Batista, R. L. Viana: Lyapunov exponents of a lattice of chaotic maps with a power-law coupling, Physics Letters A Vol. 286, pp. 134 (2001) PDF (280 kB)

  6. E. C. da Silva, I. L. Caldas and R. L. Viana, Chaotic Field Line Diffusion In Tokamaks, AIP Conference Proceedings, Vol. 563, pp. 167-172 (2001); doi: 10.1063/1.1374903. PDF, (1.04 MB)

2000

  1. R. L. Viana, C. Grebogi: Unstable dimension variability and synchronization of chaotic systems, Physical Review E Vol. 62, Number 1 (July), Pages 462-468 (2000). PDF (163 kB).

  2. R. L. Viana: Chaotic magnetic field lines in a Tokamak with resonant helical windings, Chaos, Solitons & Fractals, Vol. 11, Pages 765-778 (2000). PDF (440 kB)

  3. A. M. Batista, R. L. Viana, S. R. Lopes: Multiple short-term memories in coupled weakly nonlinear map lattices, Physical Review E, Vol. 61, Number 5 (May), Pages 5990-5993 (2000). PDF (668 kB)

  4. S. E. de S. Pinto, R. L. Viana: Synchronization plateaus in a lattice of coupled sine-circle maps, Physical Review E, Vol. 61, Number 5 (May) 5154-5161 (2000). PDF (114 kB)

  5. E. F. Manffra, H. J. Kalinowski, R. L. Viana: Chaos suppression in vertical cavity surface emitting laser diodes, Journal of Microwaves and Optoelectronics, Vol. 2, No. 1, pp. 49-53 (2000). PDF (568 kB)

  6. R. L. Viana: Introdução às Redes de Mapas Acoplados: Modelos para o Estudo de Caos Espaço-Temporal, Notas de Aula, Mini-Curso de Pos-Graduação no Instituto de Física da Universidade de São Paulo (21 a 25 de fevereiro de 2000), IFUSP Preprint P-1527 PDF (1.8 MB)

1999

  1. R. A. Clemente, R. L. Viana: On axisymmetric double adiabatic MHD equilibria with plasma flow, Plasma Physics and Controlled Fusion, Vol. 41, No. 4, Pages 567-573 (1999). PDF (107 kB),

  2. R. A. Clemente, R. L. Viana: Detailed derivation of axisymmetric double adiabatic MHD equilibria with general plasma flow, Brazilian Journal of Physics, Vol. 29, No. 2 (September), Pages 457-468 (1999). PDF (184 kB),

1998

  1. R. L. Viana, A. M. Batista: Synchronization of coupled kicked limit cycle systems, Chaos, Solitons and Fractals, Vol. 9, Number 12, Pages 1931-1944 (1998). PDF (410 kB)

  2. R. L. Viana: MHD equilibrium equation with azimuthal rotation in a curvilinear coordinate system, International Journal of Theoretical Physics, Vol. 37, No. 10, Pages 2657-2667 (1998). PDF (132 kB),

1997

  1. R. Pakter, S. R. Lopes, and R. L. Viana: Transition to chaos in the conservative four-wave parametric interactions, Physica D, Vol. 110, Pages 277-288 (1997). PDF (717 kB),

  2. R. L. Viana, R. A. Clemente, S. R. Lopes: Spherically symmetric stationary MHD equilibria with azimuthal rotation, Plasma Physics and Controlled Fusion, Vol. 39, Pages 197-203 (1997). PDF (128 kB),

  3. R. L. Viana and D. B. Vasconcelos: Field-line stochasticity in a tokamak with an ergodic magnetic limiter, Dynamics and Stability of Systems, Vol. 12, Number 2, Pages 75-88 (1997). PDF (881 kB),

1996

  1. I. L. Caldas, J. M. Pereira, K. Ullmann, and R. L. Viana: Magnetic field line mappings for a tokamak with ergodic limiters, Chaos, Solitons and Fractals, Vol. 7, Number 7, Pages 991-1010 (1996). PDF (1.18 MB)

1995

  1. R. L. Viana: Hamiltonian representation for magnetic field lines in an exactly soluble model, Brazilian Journal of Physics, Vol. 25, Number 3 (September), Pages 215-218. PDF (208 kB)

1994

  1. R. L. Viana: Comment on a hamiltonian representation for helically symmetric fields, Plasma Physics and Controlled Fusion, Vol. 36, Pages 587-588 (1994). PDF (77 kB)

  2. E. Abdalla, F. M. de Carvalho Filho, and R. L. Viana: Stochastic quantization of the nonlinear sigma model and the background field model, International Journal of Theoretical Physics, Vol. 33, Number 6, Pages 1241-1250 (1994) PDF (505 kB)

1993

  1. R. L. Viana: Magnetic field line hamiltonian for some perturbed MHD equilibria in cylindrical geometry, Revista Mexicana de Fisica, Vol. 39, Number 6, Page 902-912 (1993). PDF (543 kB)

1992

  1. R. L. Viana and I. L. Caldas: Peripheral stochasticity in tokamaks: the Martin-Taylor model revisited, Zeitschrift fuer Naturforschung A, Vol. 47, Pages 941-944 (1992). PDF (221 kB)

1991

  1. R. L. Viana and I. L. Caldas: Comments on the magnetic field generated by an infinite current grid, European Journal of Physics, Vol. 12, Pages 293-296 (1991). PDF (178 kB)

1989

  1. E. Abdalla and R. L. Viana: Analytic stochastic regularization in QCD and its supersymmetric extension, Modern Physics Letters A, Vol. 4, Number 5, Pages 491-499 (1989). PDF (276 kB)

  2. E. Abdalla and R. L. Viana: Breaking of gauge invariance in spinor QED induced by a stochastic regulator, Revista Brasileira de Fisica, Vol. 19, No. 2, pp. 203-214 (1989). PDF (190 kB)

  3. E. Abdalla, M. Gomes, R. L. Viana, A. Lima-Santos, and M. C. Abdalla: Analytic stochastic regularization: various applicaitons in gauge and supersymmetric theories, Revista Brasileira de Fisica, Vol. 19, No. 3, pp. 307-329 (1989). PDF (404 kB)