Et profilbilde

Professor
Hervik, Sigbjørn { "honorific-suffix": "Professor", "fn": "Hervik, Sigbjørn", "tel": "Telefon: 5183 2172", "email": "sigbjorn.hervik@uis.no" }

Avdeling/enhet Det teknisk- naturvitenskapelige fakultet
Institutt/senter Institutt for matematikk og naturvitenskap
Rom KE E-532
Tlf priv/mob +47 41581800

Courses taught

Forskningsområder

Research Interests:

  • Riemannian Geometry/Lorentzian Geometry
  • Lie groups/algebras
  • Homogeneous spaces
  • Relativity
  • Cosmology (mathematical aspects)
  • Alternative theories of gravity
  • Classification issues for exact solutions in GR.

Utvalgte publikasjoner

37. S. Hervik, Ricci Nilsoliton Black holes, J. Geom. Phys. 58 (2008) 1253-1264

38. S. Hervik, R. van den Hoogen, W.C. Lim and A.A. Coley, Late-time behaviour of the tilted Bianchi type VIh models, Class. Quant. Grav. 24 (2007) 3859-3895.

39. A. Coley, A. Fuster, S. Hervik and N. Pelavas, Vanishing scalar invariant spacetimes in supergravity, JHEP 05 (2007) 032

40. S. Hervik, R. van den Hoogen, W.C. Lim and A.A. Coley, Late-time behaviour of the tilted Bianchi
type VI _{?1/9} models, Class. Quant. Grav. 25 (2008) 015002

41. A. Coley, A. Fuster and S. Hervik, Supergravity solutions with constant scalar invariants, Int. J. Mod. Phys. A, 24 (2009) 1105-1118

42. A. Coley, S. Hervik, N. Pelavas, Lorentzian spacetimes with constant curvature invariants in three dimensions, Class. Quant. Grav. 25 (2008) 025008

43. Ø. Rudjord, Ø. Grøn and S. Hervik, The Weyl curvature conjecture and black hole entropy, Physica Scripta, 77 (2008) 55901.

44. A. Coley and S. Hervik, A note on tilted Bianchi type VIh models: The type III bifurcation, Class. Quant. Grav. 25 (2008) 198001 (see also arXiv:0802.3629 [gr-qc])

45. Ø. Elgarøy, Ø. Grøn, and S. Hervik, Perihelion Precession in spherical ly symmetric Kaluza-Klein Theories, arXiv:0803.1960 [astro-ph]

46. A.A. Coley, G.W. Gibbons, S. Hervik, and C.N. Pope, Metrics with vanishing Quantum Corrections, Class. Quant. Grav. 25 (2008) 145017

47. J. Brannlund, A. Coley, and S. Hervik, Supersymmetry, holonomy and Kundt spacetimes, Class. Quantum Grav. 25 (2008) 195007

48. A. Coley, S. Hervik, and N. Pelavas, Spacetimes characterised by their curvature invariants, Class. Quant. Grav. 26 (2009) 025013.

49. A. Coley, S. Hervik, G. Papadopoulos, N. Pelavas, Kundt Spacetimes, Class. Quantum Grav. 26 (2009) 105016.

50. A. Coley, S. Hervik, and N. Pelavas, Lorentzian spacetimes with constant curvature invariants in four dimensions, Class. Quantum Grav. 26 (2009) 125011.

51. A.A. Coley, S. Hervik, W.C. Lim, M.A.H. MacCallum, Properties of kinematic singularities, Class. Quantum Grav. 26 (2009) 215008.

52. A. Coley and S. Hervik, Higher dimensional bivectors and classi?cation of the Weyl operator, Class. Quantum Grav. 27 (2010) 015002.

53. A. Coley and S. Hervik, Note on the invariant classification of vacuum type D spacetimes, Class. Quantum Grav. 26 (2009) 247001.

54. J.D. Barrow and S. Hervik, Simple Types of Anistropic Inflation, Phys. Rev. D81 (2010) 023513.


55. A. Coley, S. Hervik, and N. Pelavas, Lorentzian manifolds and scalar curvature invariants, Class.
Quantum Grav. 27 (2010) 102001

56. S. Hervik and A. Coley, Curvature operators and scalar curvature invariants, Class. Quantum Grav.
27 (2010) 095014.

57. S. Hervik, W.C. Lim, P. Sandin and C. Uggla, Future asymptotics of tilted Bianchi type II cosmolo
gies, Class. Quantum Grav. 27 (2010) 185006.

58. S. Hervik and A.A. Coley, Pseudo-Riemannian VSI spaces, Class. Quant. Grav. 28 (2011) 015008.


59. S. Hervik and A. Coley, On the algebraic classification of pseudo-Riemannian spaces, arXiv:1008.3021
[gr-qc], Int. J. Geo. Meth. Mod. Phys. 8 (2011).

60. A. Coley and S. Hervik, Discriminating the Weyl type in higher dimensions using scalar curvature
invariants, Gen. Rel. Grav. 43 (2011) 2199-2207.

61. A. Coley and S. Hervik, Algebraic classification of spacetimes using discriminating scalar curvature
invariants, arXiv:1011.2175 [gr-qc].

62. A. Alcolado, A. MacDougall, A. Coley and S. Hervik, 4D neutral signature VSI and CSI spaces, J. Geom. Phys. (2012).


63. S. Hervik, All metrics have curvature tensors characterised by its invariants as a limit: the ?-
property., Class. Quantum Grav. 28 (2011) 157001.

64. S. Hervik, A spacetime not characterised by its invariants is of aligned type II, Class. Quantum
Grav. 28 (2011) 215009.

65. A. A. Coley and S. Hervik, Universality and constant scalar curvature invariants, ISRN Geometry,
Volume 2011 (2011), Article ID 248615.

66. A. A. Coley, S. Hervik, M. N. Durkee and M. Godazgar, Algebraic classification of five-dimensional spacetimes using scalar invariants, Class. Quantum Grav. 28 (2011) 155016.

67. S. Hervik, D. F. Mota and M. Thorsrud, Inflation with stable anisotropic hair: Is it cosmologically viable?, JHEP 11 (2011) 146.

68. S. Hervik, Pseudo-Riemannian VSI Spaces. II, Class. Quantum Grav. 29 (2012) 095011.

69. A. Coley, S. Hervik, M. Ortaggio and L. Wylleman, Refinements of the Weyl tensor classification in five dimensions, submitted.

70. S. Hervik, M. Ortaggio and L. Wylleman, Minimal tensors and purely electric or magnetic spacetimes of arbitrary dimension, submitted.

Pågående forskning

Arbeidserfaring