Prof. Octavio José Obregón Díaz

Universidad de Guanajuato, Mexico

Full Professor



1973 Ph.D., University of Konstanz, Konstanz, Germany

1969 B.Sc., Facultad de Ciencias, Universidad Nacional Autónoma de México

Publications (Selected)


  1. Modified entropies as the origin of generalized uncertainty principles. Nana Cabo, O. Obregón, Wilfredo Yupanqui. Physics Letters ELSEVIER 2022, B 836, 137636.
  2. Ensemble Fluctuations related to Generalized (probability dependent) Entropies and their Work Fluctuation theorem. The European Physical Journal Plus. O. Obregón, JL López and J. Río. J. L. López-Picóna , O. Obregónb, J. Ríos-Padillac. Eur. Phys. J. Plus (2022) 137:342.
  3. Computer simulations of effective potentials for generalized Boltzmann-Gibbs statistics. O. Obregón, J. Torres-Arenas y A.Gil-Villegas. J. Mol. Liq. 248, 364 (2017).
  4. Generalized information and entranglement entropy, gravitation and holography, O. Obregón. Int. J. Mod. Phys. A 30 (2015) 16, 1530039.
  5. Quantum cosmology in Horava-Lifshitz gravity. O. Obregón and J.A. Preciado. Phys. Rev. D 86, 063502 (2012).
  6. Superstatistics and Gravitation. O. Obregón. Entropy 2010, 12(9), 2067-2076.
  7. WKB-Type approximation to noncommutative quantum cosmology. E. Mena, O. Obregón, and M. Sabido. International Journal of Modern Physics D 18, (2009) 95-106.
  8. Searching for S-Duality in Gravitation. H. García-Compean, O. Obregón and C. Ramírez. Memorias del III Taller de la DGFM-SMF. Editores: N. Bretón, O. Pimentel y J. Socorro. ISBN 968-865-220-7. Universidad de Guanajuato, México (2000) 1-6.
  9. Unified Approach to Study Quantum Properties of Primordial Black Holes, Wormholes and of Quantum Cosmology. S. Nojiri, O. Obregón and S. Odintsov. Mod. Phys. Lett. A 14, No. 20 (1999) 1309-1316.
  10. Dirac-Like Formulation of Quantum Supersymmetric Cosmology. O. Obregón and C. Ramírez. Phys. Rev. D. 57 (1998) 1015-1026.
  11. General Quantum Cosmological Solution in Pure Quadratic Gravity. L.O. Pimentel, O. Obregón and J.J. Rosales. Class. Quantum Grav. 14 (1997) 379-384.
  12. Supersymmetric features of Maxwell fish-eye lens. H. Rosu, M. Reyes, K.B. Wolf and O. Obregón. Proceedings of the 2da. Reunión Iberoamericana de Optica. Eds. D. Malacara, et al. SPIE-The International Society for Optical Engineering 2730 (1996) 436-439.
  13. Allowed Gravitational Lagrangians Imposing (t - r)/r as Weak-Field Limit Green Function. J.J. Giambiagi, J.A. Nieto and O. Obregón. IL Nuovo Cimento B 110 (1995) 101-106.
  14. Supersymmetry and Quantum Cosmology. A. Macías, O. Obregón and J. Socorro. Proceedings of the VII J.A. Swieca Summer School. Eds. O.J.P. Éboli and V.O. Rivelles. World Scientific Publishing, Co. (1994) 760-765.
  15. Supersymmetric Quantum Cosmology. A. Macías, O. Obregón and J. Socorro. Int. J. of Mod. Phys. A. 8, No. 24 (1993) 4291-4317.
  16. Non-Singular de Sitter Universe in R+R2-2  Gravity. J. Benítez and O. Obregón. Astrophys. and Sp. Sci. 193 (1992) 95-98.
  17. Lie Group for the Jordan and Brans-Dicke Cosmology. G.M. Covarrubias and O. Obregón. Astrophys. and Sp. Sci. 181 (1991) 21-27.
  18. Quantum (Super) Cosmological Bianchi I Model. A Macías, O. Obregón and M.P. Ryan. Proceedings SILARG VI. Ed. M. Novello. World Scientific Publishing Co. (1988) 361-367.
  19. A Scalar-Tensor Theory and the New Interaction. L.O. Pimentel and O. Obregón. Astrophys. and Sp. Sci., 126 (1986) 231-234.
  20. Bianchi Type IX Cosmological Models with Homogeneous Spinor Fields. O. Obregón and M. P. Ryan, Jr. J. Math. Phys., 22, No. 3, (1981) 623-630.
  21. Exact Cosmological Solution with Particle Creation in JBD Theory. O. Obregón and L.O. Pimentel. Gen. Rel. and Grav., Vol. 9, No. 7 (1978) 585-595.
  22. New Exact Cosmological Solution in Brans and Dicke's Scalar-Tensor Theory. O. Obregón and G. Covarrubias. Proceedings of the International Symposium on Mathematical Physics. Eds. J. Plebanski, M. Moshinsky, (1976) 757-764.
  23. Quasar Redshifts and Peculiar Velocities. H. Dehnen and O. Obregón. Astrophys. Lett. 14 (1973) 91-97.
  24. Exact Cosmological Solutions in Brans and Dicke's Scalar Tensor Theory, II. H. Dehnen and O. Obregón. Astrophys. and Sp. Sci., 15 (1972) 326-333.
  25. General Relativistic Barometric Formulae. H. Dehnen and O. Obregón. Astronomy and Astrophysics. 12 (1971) 161-164.

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