Jan Ambjørn

Jan Ambjørn

Professor, emeritus

ORCID: 0000-0003-3782-089X

Publication year:
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1 - 25 out of 339Page size: 25
  1. 2023
  2. 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

  3. Published

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

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

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

  4. 2022
  5. Published

    Topology induced first-order phase transitions in lattice quantum gravity

    Ambjørn, Jan, Gizbert-Studnicki, J., Gorlich, A. & Nemeth, D., 3 Apr 2022, In: Journal of High Energy Physics (Online). 2022, 04, 20 p., 103.

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

  6. Published

    Easing the Hubble constant tension

    Ambjørn, Jan & Watabiki, Y., 1 Mar 2022, In: Modern Physics Letters A. 37, 07, 2250041.

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

  7. 2021
  8. Published

    Matter-Driven Change of Spacetime Topology

    Ambjørn, Jan, Drogosz, Z., Gizbert-Studnicki, J., Gorlich, A., Jurkiewicz, J. & Nemeth, D., 12 Oct 2021, In: Physical Review Letters. 127, 16, 5 p., 161301.

    Research output: Contribution to journal › Letter › Research › peer-review

  9. Published

    Scalar fields in causal dynamical triangulations

    Ambjørn, Jan, Drogosz, Z., Gizbert-Studnicki, J., Görlich, A., Jurkiewicz, J. & Nemeth, D., 16 Sep 2021, In: Classical and Quantum Gravity. 38, 60 p., 195030.

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

  10. Published

    Cosmic voids and filaments from quantum gravity

    Ambjørn, Jan, Drogosz, Z., Gizbert-Studnicki, J., Gorlich, A., Jurkiewicz, J. & Nemeth, D., Aug 2021, In: European Physical Journal C. 81, 8, 5 p., 708.

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

  11. 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

  12. Published

    Wormholes in 2d Horava-Lifshitz quantum gravity

    Ambjørn, Jan, Hiraga, Y., Ito, Y. & Sato, Y., 10 May 2021, In: Physics Letters B. 816, 5 p., 136205.

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

  13. Published

    Properties of dynamical fractal geometries in the model of causal dynamical triangulations

    Ambjørn, Jan, Drogosz, Z., Gorlich, A. & Jurkiewicz, J., 27 Apr 2021, In: Physical Review D. 103, 8, 17 p., 086022.

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

  14. Published

    CDT Quantum Toroidal Spacetimes: An Overview

    Ambjørn, Jan, Drogosz, Z., Gizbert-Studnicki, J., Gorlich, A., Jurkiewicz, J. & Nemeth, D., 26 Mar 2021, In: Universe. 7, 4, 26 p., 79.

    Research output: Contribution to journal › Review › Research › peer-review

  15. Published

    Wormholes, a fluctuating cosmological constant and the Coleman mechanism

    Ambjørn, Jan, Sato, Y. & Watabiki, Y., 2 Jan 2021, In: Physics Letters B. 815, 5 p., 136152.

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

  16. 2020
  17. Published

    Renormalization in Quantum Theories of Geometry

    Ambjørn, Jan, Gizbert-Studnicki, J., Gorlich, A., Jurkiewicz, J. & Loll, R., 9 Jul 2020, In: Frontiers in Physics. 8, 12 p., 247.

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

  18. Published

    Models of the universe based on Jordan algebras

    Ambjørn, Jan & Watabiki, Y., 1 Jun 2020, In: Nuclear Physics B. 955, 54 p., 115044.

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

  19. Published

    Towards elucidation of zero-temperature criticality of the Ising model on 2D dynamical triangulations

    Ambjørn, Jan, Sato, Y. & Tanaka, T., 18 May 2020, In: Physical Review D. 101, 10, 12 p., 106019.

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

  20. 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

  21. 2019
  22. Published

    Critical phenomena in causal dynamical triangulations

    Ambjørn, Jan, Coumbe, D., Gizbert-Studnicki, J., Gorlich, A. & Jurkiewicz, J., 15 Oct 2019, In: Classical and Quantum Gravity. 36, 22, 40 p., 224001.

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

  23. Published

    Towards an UV fixed point in CDT gravity

    Ambjørn, Jan, Gizbert-Studnicki, J., Gorlich, A., Jurkiewicz, J. & Nemeth, D., 29 Jul 2019, In: Journal of High Energy Physics. 2019, 7, 18 p., 166.

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

  24. Published

    Pseudo-Cartesian coordinates in a model of Causal Dynamical Triangulations

    Ambjørn, Jan, Drogosz, Z., Gizbert-Studnicki, J., Gorlich, A. & Jurkiewicz, J., 30 Apr 2019, In: Nuclear Physics B. 943, 18 p., 114626.

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

  25. 2018
  26. Published

    Spectral curves for hypergeometric Hurwitz numbers

    Ambjørn, Jan & Chekhov, L. O., 23 Jul 2018, In: Journal of Geometry and Physics. 132, p. 382-392 11 p.

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

  27. 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

  28. Published

    Perturbed generalized multicritical one-matrix models

    Ambjørn, Jan, Chekhov, L. & Makeenko, Y., Mar 2018, In: Nuclear Physics B. 928, p. 1-20 20 p.

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

  29. 2017
  30. Published

    A modified Friedmann equation

    Ambjørn, Jan & Watabiki, Y., 28 Dec 2017, In: Modern Physics Letters A. 32, 40, 1750224.

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

  31. Published

    The use of Pauli-Villars regularization in string theory

    Ambjørn, Jan & Makeenko, Y., 10 Nov 2017, In: International Journal of Modern Physics A. 32, 31, 1750187.

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

  32. Published

    Scattering amplitudes of regularized bosonic strings

    Ambjørn, Jan & Makeenko, Y., 30 Oct 2017, In: Physical Review D. 96, 8, 086024.

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

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