Jan Ambjørn
Professor, emeritus
Theoretical high energy, astroparticle and gravitational physics
Blegdamsvej 17
2100 København Ø
- 2023
- 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
- 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
- 2022
- 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
- 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
- 2021
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 2020
- 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
- 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
- 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
- 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
- 2019
- 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
- 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
- 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
- 2018
- 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
- 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
- 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
- 2017
- 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
- 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
- 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
ID: 5868
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Signature change of the metric in CDT quantum gravity?
Research output: Contribution to journal › Journal article › Research › peer-review
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A model for emergence of space and time
Research output: Contribution to journal › Journal article › Research › peer-review
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String theory as a Lilliputian world
Research output: Contribution to journal › Journal article › Research › peer-review
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