Jan Ambjørn
Professor, emeritus
Theoretical high energy, astroparticle and gravitational physics
Blegdamsvej 17
2100 København Ø
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Reduced lattice gauge theory in two dimensions
Ambjørn, Jan, Durhuus, Bergfinnur & Olesen, Poul, 13 Oct 1983, In: Physics Letters B. 130, 1-2, p. 93-97Research output: Contribution to journal › Journal article › Research › peer-review
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Regularized bosonic strings need extrinsic curvature
Ambjørn, Jan & Durhuus, Bergfinnur, 9 Apr 1987, In: Physics Letters B. 188, 2, p. 253-257Research output: Contribution to journal › Journal article › Research › peer-review
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Regularized quantum gravity and string theory
Ambjørn, Jan, 1992, Proc. on Random surfaces and 2-D quantum gravity, Barcelona, 1991... Amsterdam, p. 8-24Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Regularized strings with extrinsic curvature
Ambjørn, Jan, Durhuus, Bergfinnur, Frohlich, J. & Jonsson, T., 28 Dec 1987, In: Nuclear Physics B. 290, 4, p. 480-506Research output: Contribution to journal › Journal article › Research › peer-review
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Remarks about c>1 and D>2
Ambjørn, Jan, 1 Mar 1994, In: Theoretical and Mathematical Physics. 98, 3, p. 219-226Research output: Contribution to journal › Journal article › Research › peer-review
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Remarks on holographic Wilson loops and the Schwinger effect
Ambjørn, Jan & Makeenko, Y., 5 Mar 2012, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 85, 6, p. 061901Research output: Contribution to journal › Journal article › Research › peer-review
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Renormalisation group flow in an exactly solvable model with fluctuating geometry
Ambjørn, Jan, Bialas, P. & Jurkiewicz, J., 27 Jun 1996, In: Physics Letters B. 379, 1-2, p. 93-98Research output: Contribution to journal › Journal article › Research › peer-review
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Renormalization group flow in CDT
Ambjørn, Jan, Goerlich, A., Jurkiewicz, J., Kreienbuehl, A. & Loll, R., 21 Aug 2014, In: Classical and Quantum Gravity. 31, 16, 165003.Research output: Contribution to journal › Journal article › Research › peer-review
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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
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Renormalization of 3d quantum gravity from matrix models
Ambjørn, Jan, Jurkiewicz, J. & Loll, R., 19 Feb 2004, In: Physics Letters B. 581, 3-4, p. 255-262Research output: Contribution to journal › Journal article › Research › peer-review
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Roaming moduli space using dynamical triangulations
Ambjørn, Jan, Barkley, J. & Budd, T. G., 11 May 2012, In: Nuclear Physics B. 858, 2, p. 267-292Research output: Contribution to journal › Journal article › Research › peer-review
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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. 153-158Research output: Contribution to journal › Journal article › Research › peer-review
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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
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Scale-dependent Hausdorff dimensions in 2d gravity
Ambjørn, Jan, Budd, T. & Watabiki, Y., 7 Sep 2014, In: Physics Letters B: Particle Physics, Nuclear Physics and Cosmology. 736, p. 339-343Research output: Contribution to journal › Journal article › Research › peer-review
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Scaling behavior of regularized bosonic strings
Ambjørn, Jan & Makeenko, Y., 22 Mar 2016, In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 93, 6, 066007.Research output: Contribution to journal › Journal article › Research › peer-review
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Scaling in four-dimensional quantum gravity
Ambjørn, Jan & Jurkiewicz, J., 2 Oct 1995, In: Nuclear Physics B. 451, 3, p. 643-676Research output: Contribution to journal › Journal article › Research
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Scaling in quantum gravity
Ambjørn, Jan & Watabiki, Y., 3 Jul 1995, In: Nuclear Physics B. 445, 1, p. 129-142Research output: Contribution to journal › Journal article › Research
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Scaling of the string tension in a new class of regularized string theories
Ambjørn, Jan, Durhuus, Bergfinnur & Jonsson, T., 22 Jun 1987, In: Physical Review Letters. 58, 25, p. 2619-2622Research output: Contribution to journal › Journal article › Research › peer-review
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Scaling with a modified Wilson action which suppresses Z(2) artifacts in SU(2) lattice gauge theories
Ambjørn, Jan & Thorleifsson, G., 1994, In: Phys. REv.. D 50, p. 4715-4717Research output: Contribution to journal › Journal article › Research
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Scaling with a modified Wilson action which suppresses Z2 antifacts in SU(2) lattice gauge theories
Ambjørn, Jan & Thorleifsson, G., 1 Oct 1994, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 50, 7, p. 4715-4717Research output: Contribution to journal › Journal article › Research
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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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Screening and D-brane dynamics in finite temperature superstring theory
Ambjørn, Jan, Makeenko, Y. M., Semenoff, G. W. & Szabo, R. J., 15 Nov 1999, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 60, 10, p. 106009Research output: Contribution to journal › Journal article › Research › peer-review
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Search for scaling dimensions for random surfaces with c = 1
Ambjørn, Jan, Bialas, P., Burda, Z., Jurkiewicz, J. & Peterson, B., 12 Jan 1995, In: Physics Letters B. 342, 1-4, p. 58-65Research output: Contribution to journal › Journal article › Research
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Searching for a continuum limit in causal dynamical triangulation quantum gravity
Ambjørn, Jan, Coumbe, D. N., Gizbert-Studnicki, J. & Jurkiewicz, J., 17 May 2016, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 93, 10, 104032.Research output: Contribution to journal › Journal article › Research › peer-review
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Second-and first-order phase transitions in causal dynamical triangulations
Ambjørn, Jan, Jordan, S., Loll, R. & Jurkiewicz, J., 20 Jun 2012, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 85, 12, p. 124044Research output: Contribution to journal › Journal article › Research › peer-review
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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. 211303Research output: Contribution to journal › Journal article › Research › peer-review
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Semi-classical dynamical triangulations
Ambjørn, Jan & Budd, T. G., 15 Nov 2012, In: Physics Letters B. 718, 1, p. 200-204 4 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Semiclassical universe from first principles
Ambjørn, Jan, Jurkiewicz, J. & Loll, R., 10 Feb 2005, In: Physics Letters B. 607, 3-4, p. 205-213Research output: Contribution to journal › Journal article › Research › peer-review
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Shaken, but not stirred: Potts model coupled to quantum gravity
Ambjørn, Jan, Anagnostopoulos, K. N., Loll, R. & Pushkina, I., 21 Jan 2009, In: Nuclear Physics B. 807, 1-2, p. 251-264 19 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Signature change of the metric in CDT quantum gravity?
Ambjørn, Jan, Coumbe, D. N., Gizbert-Studnicki, J. & Jurkiewicz, J., 7 Aug 2015, In: Journal of High Energy Physics (Online). 2015, 8, 033.Research output: Contribution to journal › Journal article › Research › peer-review
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Simplified tetrahedron equations: Fermionic realization
Ambjørn, Jan, Khachatyan, S. & Sedrakyan, A., 6 Feb 2006, In: Nuclear Physics B. 734, 3, p. 287-303Research output: Contribution to journal › Journal article › Research › peer-review
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Simulating simplified versions of the IKKT matrix model
Ambjørn, Jan, Anagnostopoulos, K. N., Hotta, T. & Nishimura, J., 29 Apr 2001, In: Nuclear Physics, Section B, Proceedings Supplements. 94, p. 685-688Research output: Contribution to journal › Conference article › Research › peer-review
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Singularities of the Partition Function for the Ising Model coupled to 2-D Quantum Gravity
Ambjørn, Jan, Anagnostopoulos, K. N. & Magnea, U., 20 Jul 1997, In: Modern Physics Letters A. 12, 22, p. 1605-1628Research output: Contribution to journal › Journal article › Research
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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
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Sphaleron topography
Ambjørn, Jan & Farakos, K., 1 Mar 1993, In: Nuclear physics B, Proceedings supplements. 30, p. 711-714Research output: Contribution to journal › Journal article › Research › peer-review
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Sphaleron transition rate: recent numerical results
Ambjørn, Jan & Krasnitz, A., 1 Apr 1998, In: Nuclear physics B, Proceedings supplements. 63, p. 575-577Research output: Contribution to journal › Journal article › Research › peer-review
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Sphaleron transitions and Baryon asymmetry: A nummerical, real-time analysis
Ambjørn, Jan, Askgaard, T., Porter, H. & Shaposhnikov, M. E., 15 Apr 1991, In: Nuclear Physics B. 353, 2, p. 346-378Research output: Contribution to journal › Journal article › Research › peer-review
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Sphaleron-like transitions at high temperature
Ambjørn, Jan, 1995, Proc. of NATO Advanced Research Workshop on Electroweak Physics and the Early Universe. p. 271-286Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Spikes in quantum Regge calculus
Ambjørn, Jan, Nielsen, J. L., Rolf, J. J. & Savvidy, G., 1 Dec 1997, In: Classical and Quantum Gravity. 14, 12, p. 3225-3241Research output: Contribution to journal › Journal article › Research
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Spiky higher genus strings
Ambjørn, Jan, Bellini, A. & Johnston, D., 7 Sep 1991, In: Modern Physics Letters A. 6, 27, p. 2467-2474Research output: Contribution to journal › Journal article › Research › peer-review
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Spin-Spin Correlation Functions of Spin Systems Coupled to 2-D Quantum Gravity for 0 < c < 1
Ambjørn, Jan, Anagnostopoulos, K. N., Magnea, U. & Thorleifsson, G., 1 Feb 1997, In: Nuclear Physics B. Supplement 53, p. 725-727Research output: Contribution to journal › Journal article › Research
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Spontaneous parity breaking in the early universe
Ambjørn, Jan & Farakos, K., 1992, In: Nuclear Physics B. 26, p. 533-535Research output: Contribution to journal › Journal article › Research
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Spontaneous parity breaking of the electroweak theory in the early Universe..
Ambjørn, Jan & Farakos, K., 1992, Workshop on Electroweak symmetry breaking. Singapore, p. 435-441Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Stability of the nonperturbative bosonic string vacuum
Ambjørn, Jan & Makeenko, Y., 10 Jul 2017, In: Physics Letters B. 770, p. 352-356Research output: Contribution to journal › Journal article › Research › peer-review
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Statistical mechanics of paths with curvature-dependent action
Ambjørn, Jan, Durhuus, Bergfinnur & Jonsson, T., 21 Feb 1988, In: Journal of Physics A: Mathematical and Theoretical. 21, 4, p. 981-1000Research output: Contribution to journal › Journal article › Research › peer-review
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Stochastic confinement and dimensional reduction: (I). Four-dimensional SU(2) lattice gauge theory
Ambjørn, Jan, Olesen, Poul & Peterson, C., 10 Sep 1984, In: Nuclear Physics B. 240, 2, p. 189-212Research output: Contribution to journal › Journal article › Research › peer-review
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Stochastic confinement and dimensional reduction (II). Three-dimensional SU(2) lattice gauge theory
Ambjørn, Jan, Olesen, Poul & Peterson, C., 20 Nov 1984, In: Nuclear Physics B. 240, 4, p. 533-542Research output: Contribution to journal › Journal article › Research › peer-review
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Stochastic quantization and the role of time in quantum gravity
Ambjørn, Jan, Loll, R., Westra, W. & Zohren, S., 5 Oct 2009, In: Physics Letters B. 680, 4, p. 359-364 5 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Stochastic quantization vs. KdV flows in two-dimensional quantum gravity
Ambjørn, Jan, Johnson, C. V. & Morris, T. R., 4 May 1992, In: Nuclear Physics B. 374, 3, p. 496-510Research output: Contribution to journal › Journal article › Research › peer-review
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String tensions for lattice gauge theories in 2 + 1 dimensions
Ambjørn, Jan, Hey, A. & Otto, S., 25 Oct 1982, In: Nuclear Physics B. 210, 3, p. 347-368Research output: Contribution to journal › Journal article › Research › peer-review
ID: 5868
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Signature change of the metric in CDT quantum gravity?
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A model for emergence of space and time
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String theory as a Lilliputian world
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