Jan Ambjørn

Jan Ambjørn

Professor, emeritus

ORCID: 0000-0003-3782-089X

Publication year:
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151 - 200 out of 339Page size: 50
  1. 1997
  2. Published

    Alternative Actions for Quantum Gravity and the Intrinsic Rigidity of the Space-Time

    Ambjørn, Jan, Savvidy, G. K. & Savvidy, K. G., 17 Feb 1997, In: Nuclear Physics B. 486, 1-2, p. 390-412

    Research output: Contribution to journal › Journal article › Research

  3. Published

    Quantum Geometry of Topological Gravity

    Ambjørn, Jan, Anagnostopoulos, K. N., Ichihara, T., Jensen, L., Kawamoto, N., Watabiki, Y. & Yotsuji, K., 3 Apr 1997, In: Physics Letters B. 397, 3-4, p. 177-184

    Research output: Contribution to journal › Journal article › Research

  4. Published

    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. 1241-1266

    Research output: Contribution to journal › Journal article › Research

  5. Published

    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. 1605-1628

    Research output: Contribution to journal › Journal article › Research

  6. Published

    Quantum Geometry of 2-D Gravity Coupled to Unitary Matter

    Ambjørn, Jan & Anagnostopoulos, K. N., 21 Jul 1997, In: Nuclear Physics B. 497, 1-2, p. 445-478

    Research output: Contribution to journal › Journal article › Research

  7. Published

    Noncritical string field theory for 2d quantum gravity coupled to (p,q)-conformal fields

    Ambjørn, Jan & Watabiki, Y., 20 Sep 1997, In: International Journal of Modern Physics A. 12, 23, p. 4257-4289

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

  8. Published

    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. 482-510

    Research output: Contribution to journal › Journal article › Research

  9. Published

    The two-point function of c=-2 matter coupled to 2D quantum gravity

    Ambjørn, Jan, Kristjansen, Charlotte Fløe & Watabiki, Y., 3 Nov 1997, In: Nuclear Physics B. 504, 3, p. 555-578

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

  10. Published

    U(1) lattice gauge theory and N=2 supersymmetric Yang-Mills theory

    Ambjørn, Jan, Sasakura, N. & Espriu, D., 20 Nov 1997, In: Modern Physics Letters A. 12, 35, p. 2665-2681

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

  11. Published

    Improved determination of the classical sphaleron transition rate

    Ambjørn, Jan & Krasnitz, A., 24 Nov 1997, In: Nuclear Physics B. 506, 1-2, p. 387-403

    Research output: Contribution to journal › Journal article › Research

  12. Published

    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. 3225-3241

    Research output: Contribution to journal › Journal article › Research

  13. 1998
  14. Published

    The Quantum Spacetime Of c>0 2d Gravity

    Ambjørn, Jan, Anagnostopoulos, K. N. & Thorleifsson, G., 1998, In: Nucl. Phys. B (Proc.Suppl.). 63, p. 742-744

    Research output: Contribution to journal › Journal article › Research

  15. Published

    The spectral dimension of 2D quantum gravity

    Ambjørn, Jan, Boulatov, D., Nielsen, J. L., Rolf, J. J. & Watabiki, Y., 1 Feb 1998, In: Journal of High Energy Physics (Online). 1998, 02, p. 010

    Research output: Contribution to journal › Journal article › Research

  16. Published

    The quantum space-time of c=-2 gravity

    Ambjørn, Jan, Anagnostopoulos, K. N., Ichihara, T., Jensen, L., Kawamoto, N., Watabiki, Y. & Yotsuji, K., 9 Feb 1998, In: Nuclear Physics B. 511, 3, p. 673-710

    Research output: Contribution to journal › Journal article › Research

  17. Published

    A new family of integrable extended multi-band Hubbard Hamiltonians

    Ambjørn, Jan, Sedrakyan, A., Avakyan, A. & Hakobyan, T., 7 Mar 1998, In: Modern Physics Letters A. 13, 7, p. 495-503

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

  18. Published

    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. 751-753

    Research output: Contribution to journal › Journal article › Research

  19. Published

    Intrinsic geometric structure of c = -2 quantum gravity.

    Ambjørn, Jan, Anagnostopoulos, K. N., Ichihara, T., Jensen, L., Kawamoto, N., Watabiki, Y. & Yotsuji, K., 1 Apr 1998, In: Nuclear physics B, Proceedings supplements. 63, p. 748-750

    Research output: Contribution to journal › Journal article › Research

  20. Published

    Sphaleron transition rate: recent numerical results

    Ambjørn, Jan & Krasnitz, A., 1 Apr 1998, In: Nuclear physics B, Proceedings supplements. 63, p. 575-577

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

  21. Published

    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

  22. Published

    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. 742-744

    Research output: Contribution to journal › Journal article › Research

  23. Published

    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. 004

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

  24. Published

    The NBI matrix model of IIB Superstrings

    Ambjørn, Jan & Chekhov, L., 1 Dec 1998, In: Journal of High Energy Physics (Online). 1998, 12, p. 007

    Research output: Contribution to journal › Journal article › Research

  25. Published

    Non-perturbative Lorentzian quantum gravity, causality and topology change

    Ambjørn, Jan & Loll, R., 21 Dec 1998, In: Nuclear Physics B. 536, 1-2, p. 407-434

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

  26. 1999
  27. Published

    Quantum Geometry

    Ambjørn, Jan, 1999, Geometry in Present Day Science. p. 1-20

    Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Communication

  28. Published

    Two-Dimensional Quantum Geometry

    Ambjørn, Jan, Nielsen, J. L. & Rolf, J., 1999, In: Fortschr. Phys.. Vol. 47, p. 152-171

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

  29. Published

    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. 287-292

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

  30. Published

    Thermodynamics of D0-branes in matrix theory

    Ambjørn, Jan, Makeenko, Y. M. & Semenoff, G. W., 7 Jan 1999, In: Physics Letters B. 445, 3-4, p. 307-315

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

  31. Published

    Euclidean and Lorentzian quantum gravity - lessons from two dimensions

    Ambjørn, Jan, Loll, R., Nielsen, J. L. & Rolf, J., 1 Feb 1999, In: Chaos, Solitons & Fractals. 10, 2-3, p. 177-195

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

  32. Published

    Quantum geometry and diffusion

    Ambjørn, Jan, Anagnostopoulos, K. N., Ichihara, T., Jensen, L. & Watabiki, Y., 12 Feb 1999, In: Journal of High Energy Physics (Online). 1999, 11, p. 022

    Research output: Contribution to journal › Journal article › Research

  33. Published

    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. 349-394

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

  34. Published

    Four-dimensional gonihedric gauge spin system

    Ambjørn, Jan, Koutsoumbas, G. & Savvidy, G. W., 1 May 1999, In: EPL. 46, 3, p. 319-325

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

  35. Published

    Connected correlators in quantum gravity

    Ambjørn, Jan, Bialas, P. & Jurkiewicz, J., 28 May 1999, In: Journal of High Energy Physics. 1999, 2, p. 005

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

  36. Published

    Abelian gauge fields coupled to simplicial quantum gravity

    Ambjørn, Jan, Anagnostopoulos, K. N. & Jurkiewicz, J., 28 Oct 1999, In: Journal of High Energy Physics. 1999, 8, p. 016

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

  37. Published

    Bethe Ansatz and thermodynamic limit of affine quantum group invariant extensions of the t-J model

    Ambjørn, Jan, Avakyan, A., Hakobyan, T. & Sedrakyan, A., 1 Nov 1999, In: Journal of Mathematical Physics. 40, 11, p. 5687-5701

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

  38. Published

    Finite N matrix models of noncommutative gauge theory

    Ambjørn, Jan, Makeenko, Y. M., Nishimura, J. & Szabo, R. J., 1 Nov 1999, In: Journal of High Energy Physics (Online). 1999, 11, p. 029

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

  39. Published

    New perspective on matter coupling in 2D quantum gravity

    Ambjørn, Jan, Anagnostopoulos, K. N. & Loll, R., 15 Nov 1999, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 60, 10, p. 104035

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

  40. Published

    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. 106009

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

  41. 2000
  42. Published

    Nonpertubative Dynamics of Noncommutative Gauge Theory

    Ambjørn, Jan, Nishimura, J., Szabo, R. J. & Makeenko, Y. M., 2000, In: Phys. Lett.. B480, p. 399

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

  43. Published

    Vortex structure vs. monopole dominance in abelian-projected gauge theory

    Ambjørn, Jan, Greensite, J. P. & Giedt, J., 1 Feb 2000, In: Journal of High Energy Physics (Online). 2000, 2, p. 033

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

  44. Published

    Crossing the c=1 barrier in 2D Lorentzian quantum gravity

    Ambjørn, Jan, Anagnostopoulos, K. N. & Loll, R., 15 Feb 2000, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 61, 4, p. 44010

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

  45. Published

    The relation between Euclidean and Lorentzian 2D quantum gravity

    Ambjørn, Jan, Gonçalves Dias Correia, J. L., Kristjansen, Charlotte Fløe & Loll, R., 24 Feb 2000, In: Physics Letters B. 475, 4, p. 24-32

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

  46. Published

    Connected correlators in random geometries

    Ambjørn, Jan, Bialas, P. & Jurkiewicz, J., 1 Apr 2000, In: Nuclear physics B, Proceedings supplements. 83-84, p. 736-738

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

  47. Published

    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. 733-735

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

  48. Published

    Recent analytical results in 4D-dynamical triangulations

    Ambjørn, Jan, Carfora, M., Marzuoli, A. & Villani, P., 1 Apr 2000, In: Nuclear physics B, Proceedings supplements. 83-84, p. 745-747

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

  49. Published

    Vortex structure in abelian-projected lattice gauge theory

    Ambjørn, Jan, Greensite, J. P. & Griedt, J., 1 Apr 2000, In: Nuclear physics B, Proceedings supplements. 83-84, p. 467-469

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

  50. Published

    Lattice gauge fields and discrete non-commutative Yang-Mills theory

    Ambjørn, Jan, Nishimura, J., Szabo, R. J. & Makeenko, Y. M., 1 May 2000, In: Journal of High Energy Physics (Online). 2000, 5, p. 023

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

  51. Published

    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. 399-408

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

  52. Published

    Recursive sampling simulations of 3D gravity coupled to scalar fermions

    Ambjørn, Jan, Boulatov, D. V., Kawamoto, N. & Watabiki, Y., 11 May 2000, In: Physics Letters B. 480, 3-4, p. 319-330

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

  53. Published

    Making the Gravitational Path Integral More Lorentzian, or Life Beyond Liouville Gravity

    Ambjørn, Jan, Anagnostopoulos, K. N. & Loll, R., 1 Jun 2000, In: Nuclear physics B, Proceedings supplements. 88, p. 241-244

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

  54. Published

    Large N dynamics of dimensionally reduced 4D SU(N) super Yang-Mills theory

    Ambjørn, Jan, Anagnostopoulos, K. N. & Nishimura, J., 1 Jul 2000, In: Journal of High Energy Physics (Online). 2000, 7, p. 013

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

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