Jan Ambjørn

Jan Ambjørn

Professor, emeritus

ORCID: 0000-0003-3782-089X

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  1. Published

    String theory as a Lilliputian world

    Ambjørn, Jan & Makeenko, Y., 10 May 2016, In: Physics Letters B. 756, p. 142-146

    Research output: Contribution to journal › Journal article › Research › peer-review

  2. Published

    String theory in electromagnetic fields

    Ambjørn, Jan, 1 Feb 2003, In: Journal of High Energy Physics (Online). 2003, 2, p. 026

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. Published

    Strings, Fields and Critical Phenomena

    Ambjørn, Jan, 10 Jan 1988, In: Fortschritte der Physik. 36, 8, p. 595-642

    Research output: Contribution to journal › Journal article › Research › peer-review

  4. Published

    Strings, Quantum Gravity and Non-commutative Geometry on the Lattice

    Ambjørn, Jan, 28 May 2002, In: Nuclear Physics, Section B, Proceedings Supplements. 106, p. 62-70

    Research output: Contribution to journal › Conference article › Research › peer-review

  5. Published

    Stripes from (noncommutative) stars

    Ambjørn, Jan & Catteral, S., 28 Nov 2002, In: Physics Letters B. 549, 1-2, p. 253-259

    Research output: Contribution to journal › Journal article › Research › peer-review

  6. Published

    Summing over all genera for d > 1: a toy model

    Ambjørn, Jan, Durhuus, Bergfinnur & Jonsson, T., 26 Jul 1990, In: Physics Letters B. 244, 3-4, p. 403-412

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. Published

    Summing over all topological in CDT string field theory

    Ambjørn, Jan, Loll, R., Westra, W. & Zohren, S., 13 Jul 2009, In: Physics Letters B. 678, 2, p. 227-232 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  8. Published

    Superconducting cosmic strings and W condensation

    Ambjørn, Jan, Nielsen, N. K. & Olesen, Poul, 12 Dec 1988, In: Nuclear Physics B. 310, 3-4, p. 625-635

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. Published

    Supersymmetric matrix models and branched polymers

    Ambjørn, Jan, Makeenko, Y. & Zarembo, K., 30 Dec 1996, In: Nuclear Physics B. 482, 3, p. 660-674

    Research output: Contribution to journal › Journal article › Research › peer-review

  10. Published

    T Hooft's non-Abelian magnetic flux has zero classical energy

    Ambjørn, Jan & Flyvbjerg, H., 1 Dec 1980, In: Physics Letters B. 97, 2, p. 241-245

    Research output: Contribution to journal › Journal article › Research › peer-review

  11. Published

    THE BOSONIC STRING REPRESENTED AS PHI-3 GRAPHS - NEW MONTE-CARLO SIMULATIONS

    Ambjørn, Jan, Boulatov, D. & Kazakov, V. A., 5 Jul 1990, In: Modern Physics Letters A. 5, 10, p. 771-785

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. Published

    THE EFFECTIVE POTENTIAL AND THE BOUND-STATES FOR A CLASS OF 2 DIMENSIONAL GAUGE-THEORIES

    Ambjørn, Jan, 1 Dec 1980, In: Zeitschrift fur Physik C-Particles and Fields. 5, 1, p. 37-42

    Research output: Contribution to journal › Journal article › Research › peer-review

  13. Published

    TRIANGULATED RANDOM SURFACES AS A REPRESENTATION OF NON-CRITICAL STRINGS

    Ambjørn, Jan, 1 Apr 1989, In: Acta Physica Polonica B. 20, 4, p. 313-320

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. Published

    The 3D Ising model represented as random surfaces

    Ambjørn, Jan, Sedrakyan, A. & Thorleifsson, G., 15 Apr 1993, In: Physics Letters B. 303, 3-4, p. 327-333

    Research output: Contribution to journal › Journal article › Research

  15. Published

    The Concept of Time in 2D Quantum Gravity

    Ambjørn, Jan, Anagnostopoulos, K. N., Jurkiewicz, J. & Kristjansen, Charlotte Fløe, 1 Apr 1998, In: Journal of High Energy Physics. 1998, 4, 016.

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. Published

    The Geometry of Dynamical Triangulations

    Ambjørn, Jan, Carfora, M. & Marzuoli, A., 1997, Lecture Notes in Physics: N.s. M, Monographs 50. p. 197

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  17. Published

    The NBI matrix model of IIB Superstrings

    Ambjørn, Jan & Chekhov, L., 1 Dec 1998, In: Journal of High Energy Physics (Online). 1998, 12, p. 007

    Research output: Contribution to journal › Journal article › Research

  18. Published

    The Quantum Spacetime Of c>0 2d Gravity

    Ambjørn, Jan, Anagnostopoulos, K. N. & Thorleifsson, G., 1998, In: Nucl. Phys. B (Proc.Suppl.). 63, p. 742-744

    Research output: Contribution to journal › Journal article › Research

  19. Published

    The SU(2) chiral model in an external field: A complex stochastic process on a non-abelian group

    Ambjørn, Jan & Yang, S. K., 29 Sep 1986, In: Nuclear Physics B. 275, 1, p. 18-38

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. Published

    The XXZ Heisenberg model on random surfaces

    Ambjørn, Jan & Sedrakyan, A., 21 Sep 2013, In: Nuclear Physics B. 874, 3, p. 877-888

    Research output: Contribution to journal › Journal article › Research › peer-review

  21. Published

    The appearance of critical dimensions in regulated string theories

    Ambjørn, Jan, Durhuus, Bergfinnur, Frohlich, J. & Orland, P., 26 Jul 1986, In: Nuclear Physics B. 270, 3, p. 457-482

    Research output: Contribution to journal › Journal article › Research › peer-review

  22. Published

    The appearance of critical dimensions in regulated string theories (II)

    Ambjørn, Jan, Durhuus, Bergfinnur & Frohlich, J., 27 Oct 1986, In: Nuclear Physics B. 275, 2, p. 161-184

    Research output: Contribution to journal › Journal article › Research › peer-review

  23. Published

    The axial anomaly and the lattice Dirac sea

    Ambjørn, Jan, Greensite, J. & Peterson, C., 11 Jul 1983, In: Nuclear Physics B. 221, 2, p. 381-408

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. Published

    The classical sphaleron transition rate exists and is equal to 1.1(awT)4

    Ambjørn, Jan & Krasnitz, A., 9 Nov 1995, In: Physics Letters B. 362, 1-4, p. 97-104

    Research output: Contribution to journal › Journal article › Research

  25. Published

    The complex langevin equation and Monte Carlo simulations of actions with static charges

    Ambjørn, Jan, Flensburg, M. & Peterson, C., 24 Nov 1986, In: Nuclear Physics B. 275, 3, p. 375-397

    Research output: Contribution to journal › Journal article › Research › peer-review

  26. Published

    The decay of quantum D-branes

    Ambjørn, Jan & Janik, R. A., 25 Mar 2004, In: Physics Letters B. 584, 1-2, p. 155-162

    Research output: Contribution to journal › Journal article › Research › peer-review

  27. Published

    The effective action in 4-dim CDT. The transfer matrix approach

    Ambjørn, Jan, Gizbert-Studnicki, J., Görlich, A. & Jurkiewicz, J., 6 Jun 2014, In: Journal of High Energy Physics (Online). 2014, 6, 034.

    Research output: Contribution to journal › Journal article › Research › peer-review

  28. Published

    The emergence of background geometry from quantum fluctuations

    Ambjørn, Jan, Janik, R., Westra, W. & Zohren, S., 28 Sep 2006, In: Physics Letters B. 641, 1, p. 94-98

    Research output: Contribution to journal › Journal article › Research › peer-review

  29. Published

    The emergence of noncommutative target space in noncritical string theory

    Ambjørn, Jan & Janik, R. A., 1 Aug 2005, In: Journal of High Energy Physics (Online). 2005, 8, p. 057

    Research output: Contribution to journal › Journal article › Research › peer-review

  30. Published

    The factorization method for Monte Carlo simulations of systems with a complex action

    Ambjørn, Jan, Anagnostopoulos, K. N., Nishimura, J. & Verbaarschot, J. J. M., 29 Apr 2004, In: Nuclear physics B, Proceedings supplements. 129, p. 530-532

    Research output: Contribution to journal › Conference article › Research › peer-review

  31. Published

    The factorization method for systems with a complex action. A test in random matrix theory for finite density QCD

    Ambjørn, Jan, Anagnostopoulos, K. N. & Nishimura, J., 1 Oct 2002, In: Journal of High Energy Physics (Online). 2002, 10, p. 062

    Research output: Contribution to journal › Journal article › Research › peer-review

  32. Published

    The fractal Structure of Space-Time

    Ambjørn, Jan, 1997, Second International Sakharov Conference on Physics, Moscow, May 18.-25., 1996. Singapore, p. 235

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  33. Published

    The geometry of ZZ-branes

    Ambjørn, Jan, Arianos, S., Gesser, J. A. & Kawamoto, S., 14 Oct 2004, In: Physics Letters B. 599, 3-4, p. 306-312

    Research output: Contribution to journal › Journal article › Research › peer-review

  34. Published

    The higher-order phase transition in toroidal CDT

    Ambjørn, Jan, Czelusta, G., Gizbert-Studnicki, J., Gorlich, A., Jurkiewicz, J. & Nemeth, D., 7 May 2020, In: Journal of High Energy Physics. 2020, 5, 18 p., 030.

    Research output: Contribution to journal › Journal article › Research › peer-review

  35. 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 journal › Journal article › Research › peer-review

  36. Published

    The measure in three dimensional Nambu-Goto string theory

    Ambjørn, Jan & Sedrakyan, A., 3 Oct 1996, In: Physics Letters B. 386, 1-4, p. 99-105

    Research output: Contribution to journal › Journal article › Research › peer-review

  37. Published

    The microscopic structure of 2D CDT coupled to matter

    Ambjørn, Jan, Gorlich, A., Jurkiewicz, J. & Zhang, H., 30 Jun 2015, In: Physics Letters B. 746, p. 359-364

    Research output: Contribution to journal › Journal article › Research › peer-review

  38. Published

    The nature of ZZ branes

    Ambjørn, Jan & Gesser, J. A., 24 Jan 2008, In: Physics Letters B. 659, 3, p. 718-722 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  39. Published

    The phase structure of causal dynamical triangulations with toroidal spatial topology

    Ambjørn, Jan, Gizbert-Studnicki, J., Gorlich, A., Jurkiewicz, J. & Nemeth, D., 21 Jun 2018, In: Journal of High Energy Physics. 2018, 6, 23 p., 111.

    Research output: Contribution to journal › Journal article › Research › peer-review

  40. Published

    The quantum space-time of c > 0 2-d gravity.

    Ambjørn, Jan, Anagnostopoulos, K. N. & Thorleifsson, G., 1 Apr 1998, In: Nuclear physics B, Proceedings supplements. 60, p. 742-744

    Research output: Contribution to journal › Journal article › Research

  41. Published

    The quantum space-time of c=-2 gravity

    Ambjørn, Jan, Anagnostopoulos, K. N., Ichihara, T., Jensen, L., Kawamoto, N., Watabiki, Y. & Yotsuji, K., 9 Feb 1998, In: Nuclear Physics B. 511, 3, p. 673-710

    Research output: Contribution to journal › Journal article › Research

  42. Published

    The quantum universe

    Ambjørn, Jan, Görlich, A., Jurkiewicz, J. & Loll, R., 17 Dec 2008, In: Acta Physica Polonica B. 39, 12, p. 3309-3341 34 p.

    Research output: Contribution to journal › Conference article › Research › peer-review

  43. Published

    The relation between Euclidean and Lorentzian 2D quantum gravity

    Ambjørn, Jan, Gonçalves Dias Correia, J. L., Kristjansen, Charlotte Fløe & Loll, R., 24 Feb 2000, In: Physics Letters B. 475, 4, p. 24-32

    Research output: Contribution to journal › Journal article › Research › peer-review

  44. Published

    The self-organized de sitter universe

    Ambjørn, Jan, Jurkiewicz, J. & Loll, R., 1 Dec 2009, In: International Journal of Modern Physics D. 17, 13-14, p. 2515-2520 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  45. Published

    The self-organized quantum Universe

    Ambjørn, Jan, Jurkiewicz, J. & Loll, R., 1 Jul 2008, In: Scientific American. 299, 1, p. 42-49 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  46. Published

    The semiclassical limit of causal dynamical triangulations

    Ambjørn, Jan, Gorlich, A., Jurkiewicz, J., Gizbert-Studnicki, J. & Trzesniewski, T., 1 Aug 2011, In: Nuclear Physics B. 849, 1, p. 144-165 21 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  47. Published

    The spectral dimension in 2D CDT gravity coupled to scalar fields

    Ambjørn, Jan, Gorlich, A., Jurkiewicz, J. & Zhang, H., 30 Apr 2015, In: Modern Physics Letters A. 30, 13, 1550077.

    Research output: Contribution to journal › Journal article › Research › peer-review

  48. Published

    The spectral dimension of 2D quantum gravity

    Ambjørn, Jan, Boulatov, D., Nielsen, J. L., Rolf, J. J. & Watabiki, Y., 1 Feb 1998, In: Journal of High Energy Physics (Online). 1998, 02, p. 010

    Research output: Contribution to journal › Journal article › Research

  49. Published

    The spectral dimension of the universe is scale dependent

    Ambjørn, Jan, Jurkiewicz, J. & Loll, R., 21 Oct 2005, In: Physical Review Letters. 95, 17, p. 171301

    Research output: Contribution to journal › Journal article › Research › peer-review

  50. Published

    The susceptibility exponent of Nambu-Goto strings

    Ambjørn, Jan & Makeenko, Y., 21 Jun 2021, In: Modern Physics Letters A. 36, 19, 11 p., 2150136.

    Research output: Contribution to journal › Journal article › Research › peer-review

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