Jan Ambjørn

Jan Ambjørn

Professor, emeritus


  1. Published

    An intergrable model with non-reducible three partical R- matrix

    Ambjørn, Jan, Khachatryan, S. & Sedrakyan, A., 2004, In: Journal of Physics A: Mathematical and Theoretical (Print Edition). 37, 30, p. 7397-7406

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Published

    Non-perturbative calculation of correlators in 2D quantum gravity

    Ambjørn, Jan & Greensite, J., 17 Jan 1991, In: Physics Letters B. 254, 1-2, p. 66-70

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Spontaneous parity breaking in the early universe

    Ambjørn, Jan & Farakos, K., 1992, In: Nuclear Physics B. 26, p. 533-535

    Research output: Contribution to journalJournal articleResearch

  4. Published

    Regularized quantum gravity and string theory

    Ambjørn, Jan, 1992, Proc. on Random surfaces and 2-D quantum gravity, Barcelona, 1991... Amsterdam, p. 8-24

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  5. Published

    Is the present acceleration of the Universe caused by merging with other universes?

    Ambjørn, Jan & Watabiki, Y., 12 Dec 2023, In: Journal of Cosmology and Astroparticle Physics. 2023, 12, 20 p., 011.

    Research output: Contribution to journalJournal articleResearchpeer-review

  6. Published

    A new approach to three-dimensional quantum gravity..

    Ambjørn, Jan & Varsted, S., 1992, Workshop on random surfaces and 2-D quantum gravity, Barcelona, 1991. Amsterdam, p. 25-30

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  7. Published

    Two obstacles in quantum gravity

    Ambjørn, Jan, 1995, Proc. of the conference "Strings '93". p. 387-396

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  8. Published

    Noncritical String Field Theory for Two-D Quantum Gravity coupled to (p, q) Conformal Fields

    Ambjørn, Jan & Watabiki, Y., 1997, In: Int. J. Mod. Phys.. A12, p. 4257-4289

    Research output: Contribution to journalJournal articleResearch

  9. Published

    3-D lorentzian quantum gravity from the asymmetric ABAB matrix model

    Ambjørn, Jan, Jurkiewicz, J., Loll, R. & Vernizzi, G., 2003, In: Acta Physica Polonica B. 34, 10, p. 4667-4688

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    Quantum Geometry

    Ambjørn, Jan, 1999, Geometry in Present Day Science. p. 1-20

    Research output: Chapter in Book/Report/Conference proceedingReport chapterCommunication

  11. Published

    The large-scale structure of the universe from a modified Friedmann equation

    Ambjørn, Jan & Watabiki, Y., 30 Apr 2023, In: Modern Physics Letters A. 38, 12n13, 14 p., 2350068.

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. Published

    Asymptotic freon: An example on electroweak magnetism

    Ambjørn, Jan & Olesen, Poul, 1990, In: Acta Physica Polonica B. 21, 2, p. 109-117

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    New Monte Carlo simulations

    Ambjørn, Jan, Boulatov, F. & Kazakov, V. A., 1990, In: Modern Physics Letters A. 5, p. 771-785

    Research output: Contribution to journalJournal articleResearchpeer-review

  14. Published

    A solvable 2D gravity Model with Gamma greater than Zero

    Ambjørn, Jan, Durhuus, Bergfinnur & Jónsson, T., 1994, In: Modern Physics Letters A. 9, p. 1221-1228

    Research output: Contribution to journalJournal articleResearchpeer-review

  15. Published

    Problems in Quantum Gravity

    Ambjørn, Jan, 1994, Proceedings of the Workshop on Strings, Topological Field Theory and Matrix Models. Moscow, p. 241-250

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  16. Published

    Reconstructing the universe

    Ambjørn, Jan, Jurkiewicz, J. & Loll, R., 22 Sep 2005, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 72, 6, p. 064014

    Research output: Contribution to journalJournal articleResearchpeer-review

  17. Published

    RESOLVING THE ON-SHELL AND OFF-SHELL AMBIGUITY OF PERTURBATIVE QCD USING SUM-RULES

    Ambjørn, Jan & Sakain, N., 5 Jan 1981, In: Zeitschrift fur Physik C-Particles and Fields. 8, 3, p. 221-231

    Research output: Contribution to journalJournal articleResearchpeer-review

  18. Published

    SU(2) lattice gauge theory with an external field

    Ambjørn, Jan, Mitrjushkin, V. K., Bornyakov, V. G. & Zadorozhny, A. M., 13 Jul 1989, In: Physics Letters B. 225, 1-2, p. 153-158

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. Published

    Multiloop correlators for two-dimensional quantum gravity

    Ambjørn, Jan, Juriekwcz, J. & Makeenko, Y. M., 29 Nov 1990, In: Physics Letters B. 251, 4, p. 517-524

    Research output: Contribution to journalJournal articleResearchpeer-review

  20. Published

    A random walk representation of the Dirac propagator

    Ambjørn, Jan, Durhuus, Bergfinnur & Jonsson, T., 29 Jan 1990, In: Nuclear Physics B. 330, 2-3, p. 509-522

    Research output: Contribution to journalJournal articleResearchpeer-review

  21. Published

    External field dependence in SU(2) lattice theory

    Ambjørn, Jan, Mitrjushkin, V. K. & Zadorozhny, A. M., 16 Aug 1990, In: Physics Letters B. 245, 3-4, p. 575-580

    Research output: Contribution to journalJournal articleResearchpeer-review

  22. Published

    A Lorentzian cure for euclidean troubles

    Ambjørn, Jan, Dasgupta, A., Jurkiewicz, J. & Loll, R., 28 May 2002, In: Nuclear physics B, Proceedings supplements. 106, p. 977-979

    Research output: Contribution to journalConference articleResearchpeer-review

  23. Published

    Second-order phase transition in causal dynamical triangulations

    Ambjørn, Jan, Jordan, S., Jurkiewicz, J. & Loll, R., 15 Nov 2011, In: Physical Review Letters. 107, 21, p. 211303

    Research output: Contribution to journalJournal articleResearchpeer-review

  24. Published

    Two-Dimensional Quantum Geometry

    Ambjørn, Jan, Nijmegen, U. & Budd, T. G., 31 Oct 2013, In: Acta Physica Polonica B. 44, p. 2537-2558

    Research output: Contribution to journalConference articleResearchpeer-review

  25. Published

    Universality of 2d causal dynamical triangulations

    Ambjørn, Jan & Ipsen, A. C., 9 Jul 2013, In: Physics Letters B. 724, 1-3, p. 150-154

    Research output: Contribution to journalJournal articleResearchpeer-review

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