Renato Calleja's Web Page
      Renato C. Calleja             
              Investigador Titular B (Associate Professor)
              Department of Mathematics and Mechanics
              IIMAS- UNAM     
         E-mail:  calleja(at)mym(dot)iimas(dot)unam(dot)mx

         Office: IIMAS 234

Mailing address:
Depto. Matemáticas y Mecánica, IIMAS  
Universidad Nacional Autónoma de México  
Admon. No. 20  
Delegación Alvaro Obregón  
01000 México D.F.           
                                                                

Vita

Research Interests:
KAM Theory, Numerical KAM, Bifurcation Theory, Hyperbolicity, Nonlinear Lattice Equations, Numerical Analysis, State-Dependent Delay Equations.

My main research interests are in the fields of Dynamical Systems and Mathematical Physics, in particular in the study of existence and persistence of invariant objects using Numerical and Analytical tools and their relevance to applications.

My citations on Google Scholar and here.
 Teaching:
  • Sistemas Dinámicos Hamiltonianos 2025-2 SDH
  • Introducción a la Mecánica Analítica 2025-1 IMA
  • Ecuaciones Diferenciales Ordinarias 2024-2 EDO
  • Métodos Numéricos en Teoría KAM, Mexican HAT (con Pedro Porras Flores)  NumKAM
  • Introducción a la Mecánica Analítica 2024-1 IMA
  • Ecuaciones Diferenciales Ordinarias 2023-2  EDO
  • Sistemas Dinámicos Hamiltonianos 2021-2 SDH
  • Introducciòn a la Mecánica Analítica 2021-1 IMA
  • Sistemas Dinámicos No Lineales 2020-2 6011
  • Computer Assisted Proofs in Nonlinear Dynamics Course CAPNLD
Publications:
  1. R. Calleja, A. Celletti, J. Gimeno, R. de la Llave, Accurate computations up to break-down of quasi-periodic attractors in the dissipative spin-orbit problem, J. Nonlinear Sci.34(2024), no.1, Paper No. 12., pdf, preprint: ArXiv_2210.05796

  2. R. Calleja, A. Celletti, R. de la Llave, KAM quasi-periodic solutions for the dissipative standard map Commun. Nonlinear Sci. Numer. Simul. 106, (2022), 106111, pdf, preprint: ArXiv_2002.10647

  3. R. Calleja, A. Celletti, J. Gimeno, R. de la Llave, KAM quasi-periodic tori for the dissipative spin-orbit problem Commun. Nonlinear Sci. Numer. Simul. 106, (2022), 106099, pdf, preprint: ArXiv_2107.02853

  4. R. Calleja, A. Celletti, J. Gimeno, R. de la Llave, Efficient and accurate KAM tori construction for the dissipative spin-orbit problem using a map reduction , Journal of Nonlinear Science volume 32, Article number: 4 (2022), pdf, preprint: ArXiv_2106.09175

  5. Calleja, R., Celletti, A., de la Llave, R. KAM Theory for Some Dissipative Systems. In: Baù, G., Di Ruzza, S., Páez, R.I., Penati, T., Sansottera, M. (eds) New Frontiers of Celestial Mechanics: Theory and Applications. I-CELMECH 2020. Springer Proceedings in Mathematics & Statistics, vol 399. Springer, Cham. (2022), pdf : pdf preprint: ArXiv_2007.08394 ,

  6. R. Calleja, D. del-Castillo-Negrete, D. Martinez-del-Rio and A. Olvera, A new method to compute periodic orbits in general symplectic maps , Commun. Nonlinear Sci. Numer. Simul. 99, (2021), 105838, pdf, preprint: ArXiv_2003.02788

  7. R. Calleja, C. García-Azpeitia, J.P. Lessard, and J.D. Mireles-James, From the Lagrange polygon to the figure eight I: Numerical evidence extending a conjecture of Marchal, Celestial Mechanics and Dynamical Astronomy volume 133, Article number: 10 (2021), pdf preprint: ArXiv_2012.10759

  8. R. Calleja, M. Canadell, A. Haro, Non-twist invariant circles in conformally symplectic systems, Commun. Nonlinear Sci. Numer. Simul. 96, (2021), 105695, pdf, preprint: ArXiv_2005.09754

  9. A. P. Bustamante and R. Calleja, Corrigendum and Addendum to "Computation of domains of analyticity for the dissipative standard map in the limit of small dissipation", Physica D 417 (2021) 132837, pdf, preprint: ArXiv_2010.07500

  10. R. Calleja, C. García-Azpeitia, J.P. Lessard, and J.D. Mireles-James, Torus knot choreographies in the n-body problem, Nonlinearity, Volume 34, Number 1, (2021) 313, pdf, preprint: FAU

  11. Calleja, R., Celletti, A., and de la Llave, R., Existence of whiskered KAM tori of conformally symplectic systems, Nonlinearity, Volume 33, Number 1, (2020) 538–597 pdf, preprint: ArXiv_1901.07483

  12. Calleja, R., Celletti, A., and de la Llave, R., Whiskered KAM Tori of Conformally Symplectic Systems, Mathematics Research Reports, Volume 1 (2020), 15-29 pdf , preprint: ArXiv_1901.06059

  13. A. P. Bustamante and R. Calleja, Computation of domains of analyticity for the dissipative standard map in the limit of small dissipation, Physica D: Nonlinear Phenomena, Volume 395, August 2019, Pages 15-23, pdf , preprint: ArXiv_1712.05476

  14. R. Calleja, E. Doedel, and C. García-Azpeitia, Choreographies in the n-vortex problem, Regular and Chaotic Dynamics, 2018, vol. 23, no. 5, pp. 595-612, pdf,view only, preprint: ArXiv_1807.08212

  15. R. Calleja, E. Doedel, C. García-Azpeitia, and Carlos L. Pando, Choreographies in the Discrete Nonlinear Schrödinger Equations, Eur. Phys. J. Special Topics 227, 615–624 (2018), pdf, preprint: ArXiv_1801.03187

  16. R. Calleja, E. Doedel, and C. García-Azpeitia, Symmetries and choreographies in families that bifurcate from the polygonal relative equilibrium of the n-body problem, Celestial Mech. Dynam. Astronom. 130 (2018), no. 7, 130:48, pdf, preprint: ArXiv_1702.03990, animations

  17. R. Calleja, A. Celletti, R. de la Llave, Domains of analyticity of Lindstedt expansions of KAM tori in dissipative perturbations of Hamiltonian systems, Nonlinearity 30, (2017) 3151-3202, pdf, preprint: mp_arc 15-44

  18. R. C. Calleja, A. R. Humphries and B. Krauskopf, Resonance phenomena in a scalar delay differential equation with two state-dependent delays, SIAM J. Appl. Dyn. Syst., 16(3), 1474–1513 (2017), pdf, preprint: ArXiv_1607.02683

  19. R. Calleja, D. del-Castillo-Negrete, D. Martínez-del-Río, and A. Olvera, Global transport in a nonautonomous standard map, Commun. Nonlinear Sci. Numer. Simul. 51, October 2017, Pages 198–215, pdf, preprint: ArXiv_1601.04824

  20. R. Calleja, A. Celletti, L. Corsi, R. de la Llave, Response solutions for quasi-periodic forced, dissipative wave equations, SIAM J. Math. Anal., 49(4), 3161–3207 (2017), pdf, preprint: ArXiv_1501.05979

  21. Calleja, R., Doedel, E., and García-Azpeitia, C., Symmetry-breaking for a restricted n -body problem in the Maxwell-ring configuration, Eur. Phys. J. Special Topics 225, 2741-2750 (2016), pdf, preprint: ArXiv_1601.06160

  22. A.R. Humphries, D.A. Bernucci, R. Calleja, N. Homayounfar and M. Snarski, Periodic Solutions of a Singularly Perturbed Delay Differential Equation With Two State-Dependent Delays, J. Dynam. Differential Equations (2016), Volume 28, Issue 3, pp 1215-1263
    pdf, preprint: ArXiv_1411.6060

  23. D. Martínez, D. del-Castillo-Negrete, A. Olvera, R. Calleja, Self-consistent chaotic transport in a high-dimensional mean-field Hamiltonian map model, Qual. Theory Dyn. Sys. (2015), Volume 14, Issue 2, pp 313-335,
    pdf, preprint: ArXiv_1601.00942

  24. Calleja, R., Celletti, A., Falcolini, C., and de la Llave, R., An Extension of Greene's Criterion for Conformally Symplectic Systems and a Partial Justification, SIAM J. on Mathematical Analysis (2014), Vol. 46, No. 4, pp 2350-2384, pdf, preprint: mp_arc 13-60

  25. Calleja, R., Celletti, A., and de la Llave, R., Local Behavior Near Quasi-Periodic Solutions of Conformally Symplectic Systems, J. Dynam. Differential Equations 25 (2013), no. 3, 821-841, pdf preprint: mp_arc 12-16

  26. Calleja, R., Celletti, A., and de la Llave, R., KAM theory for conformally symplectic systems: Efficient algorithms and their validation, J. Differential Equations 255 (2013), no. 5, 978-1049, pdf preprint: mp_arc 11-188

  27. Calleja, R., Celletti, A., and de la Llave, R., Construction of response functions in forced strongly dissipative systems, DCDS-A, Vol. 33 (2013), No. 10, p. 4411-4433, pdf preprint: mp_arc 12-79

  28. Calleja, R., Doedel, E. J., Humphries, A. R., Lemus-Rodriguez, A., and Oldeman, B. E., Boundary-value problem formulations for computing invariant manifolds and connecting orbits in the circular restricted three body problem, Celestial Mechanics and Dynamical Astronomy, Volume 114 (2012), Issue 1-2, pp 77-106
    pdf, preprint: ArXiv 1111.0032
  29. Calleja, R. and Figueras, J.-Ll., Collision of invariant bundles of quasi-periodic attractors in the dissipative standard map, Chaos 22, 033114 (2012)
    pdf, preprint: mp_arc 11-182

  30. Calleja, R. and de la Llave, R., Computation of the breakdown of analyticity in statistical mechanics models: numerical results and a renormalization group explanation, Journal of Statistical Physics (2010) 141:940-951
    pdf, preprint: mp_arc 09-56

  31. Calleja, R. and de la Llave, R., A numerically accessible criterion for the breakdown of quasi-periodic solutions and its rigorous justificaition, Nonlinearity 23, (2010) 2029-2058
    pdf, preprint: mp_arc 09-150

  32. Calleja, R. and Celletti, A., Breakdown of invariant attractors for the dissipative standard map, Chaos 20, 013121 (2010)
    pdf, preprint: mp_arc 09-124

  33. Calleja, R. and Sire, Y., Travelling waves in discrete nonlinear systems with non-nearest neighbour interactions, Nonlinearity 22, (2009) 2583-2605
    pdf , preprint: mp_arc 08-188

  34. Calleja, R. and de la Llave, R., Fast numerical computation of quasi-periodic equilibrium states in 1-D statistical mechanics, including twist maps, Nonlinearity 22, (2009) 1311-1336
    pdf, preprint: mp_arc 08-189

  35. Lomelí, H.E. and Calleja, R., Heteroclinic bifurcations and chaotic transport in the two-harmonic Standard-Map, Chaos 16, 023117 (2006)
    pdf 
Preprints:
  1. Calleja,R., García-Azpeitia, C., Hénot, O., Lessard, J-P, Mireles-James, J., From the Lagrange Triangle to the Figure Eight Choreography: Proof of Marchal’s Conjecture,
    preprint: ArXiv_2406.17564

  2. Calleja,R., Haro, A. Porras, P., Constructive Approaches to QP-Time-Dependent KAM Theory for Lagrangian Tori in Hamiltonian Systems,
    preprint: ArXiv_2503.09740

  3. Calleja,R., Haro, A. Porras, P., Constructive QP-Time-dependent KAM Algorithm for Lagrangian Tori,
    preprint: ArXiv_2504.00335

  4. Calleja,R., Padilla, P., Rodriguez, E., Biological network dynamics: Lindstedt series and the effect of delays,
    preprint: ArXiv_2504.01322
Theses:
  • Existence and persistence of invariant objects in dynamical systems and mathematical physics,
    The University of Texas at Austin, Ph.D. Dissertation (May 2009),
    Supervisor: Rafael de la Llave. Frank Gerth III Dissertation Award.
    FGDA , mp_arc 09-77

  • Dinámica simpléctica y approximaciones numéricas de separatrices y transporte caótico,
    Instituto Tecnológico Autónomo de México, B.Sc. Thesis (June 2004),
    Supervisor: Hector Lomelí.
Animations:
Animations for the n body problem