Jan Ambjørn
Professor, emeritus
Theoretical high energy, astroparticle and gravitational physics
Blegdamsvej 17
2100 København Ø
- Published
Nonperturbative 2D quantum gravity and Hamiltonians unbounded from below
Ambjørn, Jan & Kristjansen, Charlotte Fløe, 20 Mar 1993, In: International Journal of Modern Physics A. 8, 7, p. 1259-1281Research 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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Nonperturbative Lorentzian path integral for gravity
Ambjørn, Jan, Jurkiewicz, J. & Loll, R., 31 Jul 2000, In: Physical Review Letters. 85, 5, p. 924-927Research output: Contribution to journal › Journal article › Research › peer-review
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Nonperturbative dynamics of noncommutative gauge theory
Ambjørn, Jan, Makeenko, Y. M., Nishimura, J. & Szabo, R. J., 11 May 2000, In: Physics Letters B. 480, 3-4, p. 399-408Research output: Contribution to journal › Journal article › Research › peer-review
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Nonperturbative quantum gravity
Ambjørn, Jan, Goerlich, A., zJukiewic, J. & Loll, R., 1 Oct 2012, In: Physics Reports. 519, 4-5, p. 127-210 3 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Numerical problems in applying the langevin equation to complex effective actions
Ambjørn, Jan & Yang, S., 19 Dec 1985, In: Physics Letters B. 165, 1-3, p. 140-146Research output: Contribution to journal › Journal article › Research › peer-review
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Observation of a string in three-dimensional SU(2) lattice gauge theory
Ambjørn, Jan, Olesen, Poul & Peterson, C., 2 Aug 1984, In: Physics Letters B. 142, 5-6, p. 410-414Research output: Contribution to journal › Journal article › Research › peer-review
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Observing 4D baby universes in quantum gravity
Ambjørn, Jan, Jain, S., Jurkiewicz, J. & Kristjansen, Charlotte Fløe, 13 May 1993, In: Physics Letters B. 305, 3, p. 208-213Research output: Contribution to journal › Journal article › Research › peer-review
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On electroweak magnetism
Ambjørn, Jan & Olesen, Poul, 27 Mar 1989, In: Nuclear Physics B. 315, 3, p. 606-614Research 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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On the Exponential Bound in Four-Dimensional Simplicial Gravity
Ambjørn, Jan & Jurkiewicz, J., 8 Sep 1994, In: Physics Letters B. 335, 3-4, p. 355-358Research output: Contribution to journal › Journal article › Research
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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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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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On the formation of a random color magnetic quantum liquid in QCD
Ambjørn, Jan & Olesen, Poul, 11 Aug 1980, In: Nuclear Physics B. 170, 1, p. 60-78Research output: Contribution to journal › Journal article › Research › peer-review
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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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On the phase diagram of 2d Lorentzian quantum gravity
Ambjørn, Jan, Anagnostopoulos, K. N. & Loll, R., 1 Apr 2000, In: Nuclear physics B, Proceedings supplements. 83-84, p. 733-735Research output: Contribution to journal › Conference article › Research › peer-review
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On the spontaneous breakdown of Lorentz symmetry in matrix models of superstrings
Ambjørn, Jan, Anagnostopoulos, K. N. & Nishimura, J., 15 Apr 2002, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 65, 8 part b, p. 086001Research output: Contribution to journal › Journal article › Research › peer-review
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Parity breaking at high temperature and density
Ambjørn, Jan, Farakos, K. & Shaposhnikov, M. E., 29 Mar 1993, In: Nuclear Physics B. 393, 3, p. 633-657Research output: Contribution to journal › Journal article › Research
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Particle creation in colour-electric fields
Ambjørn, Jan & Hughes, R. J., 24 Jun 1982, In: Physics Letters B. 113, 4, p. 305-310Research output: Contribution to journal › Journal article › Research › peer-review
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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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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
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Physics of c > 1 coupled to gravity
Ambjørn, Jan, 1995, In: Proc. of XXVIII International Symposium Ahrenshoop. p. 116-127Research output: Contribution to journal › Journal article › Research
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Planckian birth of a quantum de Sitter universe
Ambjørn, Jan, Goerlich, A., Jurkiewicz, J. & Loll, R., 7 Mar 2008, In: Physical Review Letters. 100, 9, p. 091304Research output: Contribution to journal › Journal article › Research › peer-review
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Problems in Quantum Gravity
Ambjørn, Jan, 1994, Proceedings of the Workshop on Strings, Topological Field Theory and Matrix Models. Moscow, p. 241-250Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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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
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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