Jan Ambjørn
Professor, emeritus
Theoretical high energy, astroparticle and gravitational physics
Blegdamsvej 17
2100 København Ø
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Periodic skyrme solitons
Zahed , I., Wirzba, A., Meissner, U. G., Pethick, C. J. & Ambjørn, Jan, 5 Mar 1985, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 31, 5, p. 1114-1118Research output: Contribution to journal › Journal article › Research › peer-review
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Correlation functions in the multiple Ising model coupled to gravity
Harris, M. G. & Ambjørn, Jan, 2 Sep 1996, In: Nuclear Physics B. 474, 3, p. 575-601Research output: Contribution to journal › Journal article › Research › peer-review
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Matter Fields with c>1 coupled to 2D gravity
Durhuus, Bergfinnur, Ambjørn, Jan, Jönsson, T. & Thorleifsson, G., 1993, In: Nuclear Physics B. 398, p. 568-592Research output: Contribution to journal › Journal article › Research › peer-review
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A solvable 2D gravity model with Gamme greater than zero
Durhuus, Bergfinnur, Ambjørn, Jan & Jónsson, T., 1995, In: Modern Physics Letters A. 9, p. 1221-1228Research output: Contribution to journal › Journal article › Research › peer-review
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Quantum geometry: A statistical field theory point of view
Durhuus, Bergfinnur, Ambjørn, Jan & Jónsson, T., 1997, Cambridge: Cambridge University Press. 363 p.Research output: Book/Report › Book › Research › peer-review
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Three-dimensional simplicial quantum gravity and generalised matrix models
Durhuus, Bergfinnur, Ambjørn, Jan & Jónsson, T., 1991, In: Modern Physics Letters A. 6, 12, p. 1133-1146Research output: Contribution to journal › Journal article › Research › peer-review
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Reconstructing the universe
Ambjørn, Jan, Jurkiewicz, J. & Loll, R., 22 Sep 2005, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 72, 6, p. 064014Research output: Contribution to journal › Journal article › Research › peer-review
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Nonperturbative 3d Lorentzian quantum gravity
Ambjørn, Jan, Jurkiewicz, J. & Loll, R., 15 Aug 2001, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 64, 4, p. 044011Research output: Contribution to journal › Journal article › Research › peer-review
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On the Quantum Geometry of String Theory
Ambjørn, Jan, Anagnostopoulos, K. N. & Nishimura, J., 28 May 2002, In: Nuclear Physics, Section B, Proceedings Supplements. 106, p. 965-967Research output: Contribution to journal › Conference article › Research › peer-review
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Towards a diagrammatic derivation of the Veneziano-Yankielowicz-Taylor superpotential
Ambjørn, Jan & Janik, R. A., 4 Sep 2003, In: Physics Letters B. 569, 1-2, p. 81-84Research output: Contribution to journal › Journal article › Research › peer-review
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Quantum rolling tachyon
Ambjørn, Jan & Janik, R. A., 23 Dec 2004, In: Physics Letters B. 604, 3-4, p. 225-234Research output: Contribution to journal › Journal article › Research › peer-review
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Wilson loops in 2D noncommutative euclidean gauge theory 1. Perturbative expansion
Ambjørn, Jan, Dubin, A. & Makeenko, Y., 1 Jul 2004, In: Journal of High Energy Physics (Online). 2004, 7, p. 044Research output: Contribution to journal › Journal article › Research › peer-review
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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. 530-532Research output: Contribution to journal › Conference 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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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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TRIANGULATED RANDOM SURFACES AS A REPRESENTATION OF NON-CRITICAL STRINGS
Ambjørn, Jan, 1 Apr 1989, In: Acta Physica Polonica B. 20, 4, p. 313-320Research output: Contribution to journal › Journal article › Research › peer-review
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Superconducting cosmic strings and W condensation
Ambjørn, Jan, Nielsen, N. K. & Olesen, Poul, 12 Dec 1988, In: Nuclear Physics B. 310, 3-4, p. 625-635Research 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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ROPERTIES OF LOOP EQUATIONS FOR THE HERMITIAN MATRIX MODEL AND FOR TWO-DIMENSIONAL QUANTUM GRAVITY
Ambjørn, Jan & Makeenko, Y. M., 10 Sep 1990, In: Modern Physics Letters A. 5, 22, p. 1753-1783Research output: Contribution to journal › Journal article › Research › peer-review
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Baryon asymmetry of the universe. A Monte Carlo study on the lattice
Ambjørn, Jan, Laursen, M. & Shaposhnkov, M. E., 22 Oct 1987, In: Physics Letters B. 197, 1-2, p. 49-54Research output: Contribution to journal › Journal article › Research › peer-review
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A non-perturbative definition of 2D quantum gravity by the fifth time action
Ambjørn, Jan, Greensite, J. & Varsted, S., 25 Oct 1990, In: Physics Letters B. 249, 3-4, p. 411-416Research output: Contribution to journal › Journal article › Research › peer-review
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A comment on the nonperturbative d=1 string theory
Ambjørn, Jan, Jurkiewicz, J. & Krzywcki, A., 5 Jul 1990, In: Physics Letters B. 243, 4, p. 373-377Research output: Contribution to journal › Journal article › Research › peer-review
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Monte Carlo simulations of regularized bosonic strings
Ambjørn, Jan, De Forcrand, P., Koukiou, F. & Petritis, D., 5 Nov 1987, In: Physics Letters B. 197, 4, p. 548-552Research output: Contribution to journal › Journal article › Research › peer-review
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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. 18-38Research output: Contribution to journal › Journal article › Research › peer-review
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A magnetic condensate solution of the classical electroweak theory
Ambjørn, Jan & Olesen, Poul, 9 Feb 1989, In: Physics Letters B. 218, 1, p. 67-71Research output: Contribution to journal › Journal article › Research › peer-review
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Errata: J. Ambjørn and P. Olesen, A magnetic condensate solution of the classical electroweak theory, Phys. Lett. B 218 (1989) 67.
Ambjørn, Jan, 13 Apr 1989, In: Physics Letters B. 220, 4, p. 659 1 p.Research output: Contribution to journal › Comment/debate › 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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Properties of the vacuum. 2. Electrodynamic
Ambjørn, Jan & Wolfram, S., 15 Aug 1983, In: Annals of Physics. 147, 1, p. 33-56Research output: Contribution to journal › Journal article › Research › peer-review
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CDT meets Horova-Lifshitz gravity
Ambjørn, Jan, Görlich, A., Jordan, S., Jurkiewicz, J. & Loll, R., 28 Jun 2010, In: Physics Letters B. 690, 4, p. 413-419 6 p.Research output: Contribution to journal › Journal article › Research › peer-review
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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
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A matrix model for 2D quantum gravity defined by causal dynamical triangulations
Ambjørn, Jan, Loll, R., Watabiki, Y., Westra, W. & Zohren, S., 24 Jul 2008, In: Physics Letters B. 665, 4, p. 252-256 5 p.Research output: Contribution to journal › Journal article › Research › peer-review
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On spontaneous parity breaking in three-dimensional Gauge- Higgs systems
Ambjørn, Jan, Farakos, K. & Shaposhnikov, M. E., 30 Oct 1991, In: Modern Physics Letters A. 6, 33, p. 3099-3112Research output: Contribution to journal › Journal article › Research › peer-review
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Baby universes in 2D quantum gravity
Ambjørn, Jan, Jain, S. & Thorleifsson, G., 10 Jun 1993, In: Physic Letters B. 307, 1-2, p. 34-39Research output: Contribution to journal › Journal article › Research
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Matrix model calculations beyond the spherical limit
Ambjørn, Jan, Chekhov, L., Kristjansen, Charlotte Fløe & Makeenko, Y., 30 Aug 1993, In: Nuclear Physics B. 404, 1-2, p. 127-172Research output: Contribution to journal › Journal article › Research › peer-review
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A universal fractal structure of 2d quantum gravity for c > 1
Ambjørn, Jan & Thorleifsson, G., 3 Mar 1994, In: Physics Letters B. 323, 1, p. 7-12Research output: Contribution to journal › Journal article › Research
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Quantum gravity represented as dynamical triangulations
Ambjørn, Jan, 1 Sep 1995, In: Classical and Quantum Gravity. 12, 9, p. 2079-2134Research output: Contribution to journal › Journal article › Research
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A random surface theory with nontrivial gamma(string)
Ambjørn, Jan, Burda, Z., Jurkiewicz, J. & Peterson, B., 5 Jan 1995, In: Physics Letters B. 341, 3-4, p. 286-292Research output: Contribution to journal › Journal article › Research
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On the fractal structure of two-dimensional quantum gravity
Ambjørn, Jan, Jurkiewicz, J. & Watabiki, Y., 6 Nov 1995, In: Nucl. Phys.. 454, 1-2, p. 313-342Research output: Contribution to journal › Journal article › Research
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Non-critical Open Strings beyond the Semiclassical Approximation
Ambjørn, Jan, Hayasaka, K. & Nakayama, R., 7 Jun 1997, In: Modern Physics Letters A. 12, 17, p. 1241-1266Research output: Contribution to journal › Journal article › Research
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On the connection between 2d topological gravity and the reduced Hermitian matrix model
Ambjørn, Jan, Harris, M. G. & Weis, M., 27 Oct 1997, In: Nuclear Physics B. 504, 1-2, p. 482-510Research output: Contribution to journal › Journal article › Research
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Center Disorder in the 3D Georgi-Glashow Model
Ambjørn, Jan & Greensite, J., 1 May 1998, In: Journal of High Energy Physics (Online). 1998, 5, p. 004Research output: Contribution to journal › Journal article › Research › peer-review
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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
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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. 742-744Research output: Contribution to journal › Journal article › Research
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Complex zeros of the 2-d ising model on dynamical random lattices.
Ambjørn, Jan, Anagnostopoulos, K. N. & Magnea, U., 1 Apr 1998, In: Nuclear physics B, Proceedings supplements. 63, p. 751-753Research output: Contribution to journal › Journal article › Research
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Four-dimensional gonihedric gauge spin system
Ambjørn, Jan, Koutsoumbas, G. & Savvidy, G. W., 1 May 1999, In: EPL. 46, 3, p. 319-325Research output: Contribution to journal › Journal article › Research › peer-review
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U(1) Lattice Gauge Theory and N = 2 Supersymmetric Yang-Mills Theory
Ambjørn, Jan, Sasakura, N. & Espriu, D., 2 Jan 1999, In: Fortschritte der Physik. 47, 1-3, p. 287-292Research output: Contribution to journal › Journal article › Research › peer-review
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Crumpled triangulations and critical points in 4D simplicial quantum gravity
Ambjørn, Jan, Carfora, M., Gabrielli, D. & Marzuoli, A., 8 Mar 1999, In: Nuclear Physics B. 542, 1-2, p. 349-394Research output: Contribution to journal › Journal article › Research › peer-review
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Lorentzian 3d gravity with wormholes via matrix models
Ambjørn, Jan, Jurkiewicz, J., Loll, R. & Vernizzi, G., 1 Sep 2001, In: Journal of High Energy Physics (Online). 2001, 9, p. 022Research output: Contribution to journal › Journal article › Research › peer-review
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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. 062Research output: Contribution to journal › Journal article › Research › peer-review
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Emergence of a 4D world from causal quantum gravity
Ambjørn, Jan, Jurkiewicz, J. & Loll, R., 24 Sep 2004, In: Physical Review Letters. 93, 13, p. 131301Research 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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