Sigbjørn Hervik | Universitetet i Stavanger

Sigbjørn Hervik

51831703

Det teknisk-naturvitenskapelige fakultet
Institutt for matematikk og fysikk

KE E-532

Publikasjoner

Tilbake

Vitenskapelige publikasjoner
- Normann, Ben David; Ricciardone, Angelo; Hervik, Sigbjørn; Thorsrud, Mikjel
  
  (2022)
  A study of inhomogeneous massless scalar gauge fields in cosmology.
  International Journal of Modern Physics, Conference Series.
  
  ISSN 2010-1945.
  
  s.1378-1883.
  
  DOI: 10.1142/9789811258251_0199
- McNutt, David Duncan; Hervik, Sigbjørn; Dahl, Eivind Evenstad
  
  (2022)
  Building new Einstein spaces by deforming symmetric Einstein spaces. I: Geometry, Lie Theory and Applications: The Abel Symposium 2019.
  Springer.
  
  ISBN 978-3-030-81295-9.
  
  s.223-252.
  
  DOI: 10.1007/978-3-030-81296-6_11
- Normann, Ben David; Hervik, Sigbjørn
  
  (2020)
  Approaching Wonderland.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 37.
  
  Hefte 8.
  
  s.1-47.
  
  DOI: 10.1088/1361-6382/ab719b
- Hervik, Sigbjørn; Ortaggio, Marcello
  
  (2020)
  Universal Black Holes.
  Journal of High Energy Physics (JHEP).
  
  ISSN 1126-6708.
  
  DOI: 10.1007/JHEP02(2020)047
- Normann, Ben David; Hervik, Sigbjørn
  
  (2020)
  Collins in Wonderland.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 37.
  
  DOI: 10.1088/1361-6382/ab8be7
- Hervik, Sigbjørn; Ortaggio, Marcello
  
  (2020)
  On Universal Black Holes.
  Acta Physica Polonica B, Proceedings Supplement.
  
  ISSN 1899-2358.
  
  Volum 13.
  
  Hefte 2.
  
  s.291-295.
  
  DOI: 10.5506/APhysPolBSupp.13.291
- Hervik, Sigbjørn; Ortaggio, Marcello
  
  (2020)
  Universal p-form black holes in generalized theories of gravity.
  European Physical Journal C.
  
  ISSN 1434-6044.
  
  Volum 80.
  
  DOI: 10.1140/epjc/s10052-020-08571-x
- Barausse, Enrico; Berti, Emanuele; Hertog, Thomas; Hughes, Scott A.; Jetzer, Philippe; Pani, Paolo; Hervik, Sigbjørn; Kolesova, Helena; Marcoccia, Paolo; Nardini, Germano; Nielsen, Alex Bentley; Sotiriou, Thomas P.; Tamanini, Nicola; Witek, Helvi; Yagi, Kent; Yunes, Nicolás; Abdelsahin, T.; Achucarro, A.; van Aelst, K.; Afshordi, N.; Akcay, S.; Annulli, L.; Arun, K.G.; Ayuso, I.; Baibhav, V.; Baker, T.; Bantilan, H.; Barreiro, T.; Barrera-Hinojosa, C.; Bartolo, N.; Baumann, D.; Belgacem, E.; Bellini, E.; Bellomo, N.; Ben-Dayan, I.; Bena, I.; Benkel, R.; Bergshoefs, E.; Bernard, L.; Bernuzzi, S.; Bertacca, D.; Besancon, M.; Beutler, F.; Beyer, F.; Bhagwat, S.; Bicak, J.; Biondini, S.; Bize, S.; Blas, D.; Boehmer, C.
  
  (2020)
  Prospects for fundamental physics with LISA.
  General Relativity and Gravitation.
  
  ISSN 0001-7701.
  
  Volum 52.
  
  DOI: 10.1007/s10714-020-02691-1
- Helleland, Christer; Hervik, Sigbjørn
  
  (2019)
  Real GIT with applications to compatible representations and Wick-rotations.
  Journal of Geometry and Physics.
  
  ISSN 0393-0440.
  
  Volum 142.
  
  s.92-110.
  
  DOI: 10.1016/j.geomphys.2019.03.007
- Hervik, Sigbjørn; McNutt, David Duncan
  
  (2019)
  Locally Homogeneous Kundt Triples and CSI Metrics.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 36.
  
  Hefte 18.
  
  DOI: 10.1088/1361-6382/ab3296
- McNutt, David Duncan; Wylleman, Lode; Coley, Alan; Hervik, Sigbjørn
  
  (2019)
  
  Locally Boost Isotropic Spacetimes and the Type ${\bf D}^k$ Condition.
  
  arXiv.org.
  
  ISSN 2331-8422.
- Normann, Ben David; Hervik, Sigbjørn; Ricciardone, Angelo; Thorsrud, Mikjel
  
  (2018)
  Bianchi cosmologies with p-form gauge fields.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 35.
  
  Hefte 9.
  
  DOI: 10.1088/1361-6382/aab3a7
- Hervik, Sigbjørn; Malek, Tomas
  
  (2018)
  Universal Walker metrics.
  Physica Scripta.
  
  ISSN 0031-8949.
  
  Volum 93.
  
  Hefte 8.
  
  s.1-12.
  
  DOI: 10.1088/1402-4896/aace9c
- Hervik, Sigbjørn; Ortaggio, Marcello; Pravda, Vojtech
  
  (2018)
  Universal electromagnetic fields.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 35.
  
  Hefte 17.
  
  s.1-19.
  
  DOI: 10.1088/1361-6382/aad13
- Hervik, Sigbjørn
  
  (2018)
  
  On a new class of infinitesimal group actions on pseudo-Riemannian manifolds.
  
  arXiv.org.
  
  ISSN 2331-8422.
- Helleland, Christer; Hervik, Sigbjørn
  
  (2017)
  Wick rotations and real GIT.
  Journal of Geometry and Physics.
  
  ISSN 0393-0440.
  
  Volum 123.
  
  s.343-361.
  
  DOI: 10.1016/j.geomphys.2017.09.009
- Helleland, Christer; Hervik, Sigbjørn
  
  (2017)
  A Wick-rotatable metric is purely electric.
  Journal of Geometry and Physics.
  
  ISSN 0393-0440.
  
  Volum 123.
  
  s.424-429.
  
  DOI: 10.1016/j.geomphys.2017.09.015
- Hervik, Sigbjørn; Pravda, Vojtech; Pravdova, Alena
  
  (2017)
  Universal spacetimes in four dimensions.
  Journal of High Energy Physics (JHEP).
  
  ISSN 1126-6708.
  
  Volum 2017.
  
  Hefte 10.
  
  DOI: 10.1007/JHEP10(2017)028
- Gregersen, Øyvind Weiby; Kløkstad, Geir Øivind; Hervik, Sigbjørn; Plesser, Hans Ekkehard; Pettersen, Ivar
  
  (2017)
  
  Some factors affecting the grades of technology students.
  
  Nordic Journal of STEM Education.
  
  ISSN 2535-4574.
  
  Volum 1.
  
  Hefte 1.
  
  s.167-173.
- Hervik, Sigbjørn; Pravda, Vojtech; Pravdova, Alena
  
  (2015)
  Type III and II universal spacetimes.
  Journal of Physics: Conference Series (JPCS).
  
  ISSN 1742-6588.
  
  Volum 600:012066.
  
  DOI: 10.1088/1742-6596/600/1/012066
- Hervik, Sigbjørn; Pravda, Vojtech; Pravdova, Alena
  
  (2015)
  Type N universal spacetime.
  Journal of Physics: Conference Series (JPCS).
  
  ISSN 1742-6588.
  
  Volum 600.
  
  Hefte 1.
  
  DOI: 10.1088/1742-6596/600/1/012065
- Shogin, Dmitry; Hervik, Sigbjørn
  
  (2015)
  Dynamics of tilted Bianchi models of types III, IV, V in presence of diffusion.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 32.
  
  Hefte 5.
  
  DOI: 10.1088/0264-9381/32/5/055008
- Hervik, Sigbjørn; Haarr, Anders; Yamamoto, Kei
  
  (2015)
  I-degenerate pseudo-Riemannian metrics.
  Journal of Geometry and Physics.
  
  ISSN 0393-0440.
  
  Volum 98.
  
  s.384-399.
  
  DOI: 10.1016/j.geomphys.2015.08.019
- Shogin, Dmitry; Amundsen, Per Amund; Hervik, Sigbjørn
  
  (2015)
  On the viability of the truncated Israel–Stewart theory in cosmology.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 32.
  
  Hefte 19.
  
  s.1-14.
  
  DOI: 10.1088/0264-9381/32/19/195012
- Hervik, Sigbjørn; Malek, Tomas; Pravda, Vojtech; Pravdova, Alena
  
  (2015)
  Type II universal spacetimes.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 32.
  
  DOI: 10.1088/0264-9381/32/24/245012
- Coley, Alan; Hervik, Sigbjørn; McNutt, David; Musoke, Nathan; Brooks, Dario
  
  (2014)
  Neutral signature Walker-VSI metrics.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 31.
  
  Hefte 3.
  
  DOI: 10.1088/0264-9381/31/3/035015
- Hervik, Sigbjørn; Ortaggio, Marcello; Wylleman, Lode
  
  (2014)
  Electric and magnetic Weyl tensors in higher dimensions.
  Springer Proceedings in Physics.
  
  ISSN 0930-8989.
  
  Volum 157.
  
  s.287-290.
  
  DOI: 10.1007/978-3-319-06761-2_38
- Hervik, Sigbjørn; Pravda, Vojtech; Pravdova, Alena
  
  (2014)
  Type III and N universal spacetimes.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 31.
  
  Hefte 21.
  
  DOI: 10.1088/0264-9381/31/21/215005
- Shogin, Dmitry; Hervik, Sigbjørn
  
  (2014)
  The late-time behaviour of tilted Bianchi type VIII universes in presence of diffusion.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 31.
  
  Hefte 13.
  
  DOI: 10.1088/0264-9381/31/13/135006
- Hervik, Sigbjørn; Ortaggio, Marcello; Wylleman, Lode
  
  (2013)
  Minimal tensors and purely electric or magnetic spacetimes of arbitrary dimension.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 30.
  
  Hefte 16.
  
  DOI: 10.1088/0264-9381/30/16/165014
- Shogin, Dmitry; Hervik, Sigbjørn
  
  (2013)
  Evolution of a simple inhomogeneous anisotropic cosmological model with diffusion.
  Journal of Cosmology and Astroparticle Physics (JCAP).
  
  ISSN 1475-7516.
  
  Volum 2013.
  
  Hefte 10.
  
  DOI: 10.1088/1475-7516/2013/10/005
- Gurses, Metin; Hervik, Sigbjørn; Sisman, Tahsin; Tekin, Bayram
  
  (2013)
  Anti–de Sitter–wave solutions of higher derivative Theories.
  Physical Review Letters.
  
  ISSN 0031-9007.
  
  Volum 111.
  
  Hefte 10.
  
  DOI: 10.1103/PhysRevLett.111.101101
- Alcolado, A; MacDougall, A; Coley, Alan; Hervik, Sigbjørn
  
  (2012)
  4D neutral signature VSI and CSI spaces.
  Journal of Geometry and Physics.
  
  ISSN 0393-0440.
  
  Volum 62.
  
  Hefte 3.
  
  s.594-603.
  
  DOI: 10.1016/j.geomphys.2011.04.012
- Coley, Alan; Hervik, Sigbjørn; Ortaggio, Marcello; Wylleman, Lode
  
  (2012)
  Refinements of the Weyl tensor classification in five dimensions.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 29.
  
  Hefte 15.
  
  DOI: 10.1088/0264-9381/29/15/155016
- Hervik, Sigbjørn
  
  (2012)
  Pseudo-Riemannian VSI spaces II.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 29.
  
  Hefte 9.
  
  DOI: 10.1088/0264-9381/29/9/095011
- Thorsrud, Mikjel; Mota, David ; Hervik, Sigbjørn
  
  (2012)
  Cosmology of a scalar field coupled to matter and an isotropy-violating Maxwell field.
  Journal of High Energy Physics (JHEP).
  
  ISSN 1126-6708.
  
  Hefte 10.
  
  DOI: 10.1007/JHEP10(2012)066
- Hervik, Sigbjørn; Coley, Alan
  
  (2011)
  Pseudo-Riemannian VSI spaces.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 28.
  
  Hefte 1.
  
  DOI: 10.1088/0264-9381/28/1/015008
- Coley, Alan; Hervik, Sigbjørn
  
  (2011)
  Discriminating the Weyl type in higher dimensions using scalar curvature invariants.
  General Relativity and Gravitation.
  
  ISSN 0001-7701.
  
  Volum 43.
  
  Hefte 8.
  
  s.2199-2207.
  
  DOI: 10.1007/s10714-011-1174-x
- Coley, Alan; Hervik, Sigbjørn; Durkee, Mark; Godazgar, Mahdi
  
  (2011)
  Algebraic classification of five-dimensional spacetimes using scalar invariants.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 28.
  
  Hefte 15.
  
  DOI: 10.1088/0264-9381/28/15/155016
- Hervik, Sigbjørn
  
  (2011)
  All metrics have curvature tensors characterized by its invariants as a limit: the epsilon-property.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 28.
  
  Hefte 15.
  
  DOI: 10.1088/0264-9381/28/15/157001
- Hervik, Sigbjørn; Coley, Alan
  
  (2011)
  On the algebraic classification of pseudo-Riemannian spaces.
  International Journal of Geometric Methods in Modern Physics (IJGMMP).
  
  ISSN 0219-8878.
  
  Volum 8.
  
  Hefte 8.
  
  s.1679-1685.
  
  DOI: 10.1142/S0219887811005932
- Hervik, Sigbjørn
  
  (2011)
  A spacetime not characterized by its invariants is of aligned type II.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 28.
  
  Hefte 21.
  
  DOI: 10.1088/0264-9381/28/21/215009
- Coley, Alan; Hervik, Sigbjørn
  
  (2011)
  Universality and Constant Scalar Curvature Invariants.
  ISRN Geometry.
  
  ISSN 2090-6307.
  
  DOI: 10.5402/2011/248615
- Hervik, Sigbjørn; Mota, David ; Thorsrud, Mikjel
  
  (2011)
  Inflation with stable anisotropic hair: is it cosmologically viable?.
  Journal of High Energy Physics (JHEP).
  
  ISSN 1126-6708.
  
  Hefte 11.
  
  DOI: 10.1007/JHEP11(2011)146
- Coley, Alan; Hervik, Sigbjørn
  
  (2010)
  Higher dimensional bivectors and classification of the Weyl operator.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 27.
  
  Hefte 1.
  
  DOI: 10.1088/0264-9381/27/1/015002
- Barrow, John; Hervik, Sigbjørn
  
  (2010)
  Simple types of anisotropic inflation.
  Physical Review D. Particles and fields.
  
  ISSN 0556-2821.
  
  Volum 81.
  
  Hefte 2.
  
  DOI: 10.1103/PhysRevD.81.023513
- Hervik, Sigbjørn; Coley, Alan
  
  (2010)
  Curvature operators and scalar curvature invariants.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 27.
  
  Hefte 9.
  
  DOI: 10.1088/0264-9381/27/9/095014
- Coley, Alan; Hervik, Sigbjørn; Pelavas, Nicos
  
  (2010)
  Lorentzian manifolds and scalar curvature invariants.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 27.
  
  Hefte 10.
  
  DOI: 10.1088/0264-9381/27/10/102001
- Hervik, Sigbjørn; Lim, Woei Chet; Sandin, Patrik; Uggla, Claes
  
  (2010)
  Future asymptotics of tilted Bianchi type II cosmologies.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 27.
  
  Hefte 18.
  
  DOI: 10.1088/0264-9381/27/18/185006
- Coley, Alan; Fuster, Andrea; Hervik, Sigbjørn
  
  (2009)
  
  SUPERGRAVITY SOLUTIONS WITH CONSTANT SCALAR INVARIANTS.
  
  International Journal of Modern Physics A.
  
  ISSN 0217-751X.
  
  Volum 24.
  
  Hefte 6.
  
  s.1119-1133.
- Coley, Alan; Hervik, Sigbjørn; Pelavas, Nicos
  
  (2009)
  Spacetimes characterized by their scalar curvature invariants.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 26.
  
  Hefte 2.
  
  DOI: 10.1088/0264-9381/26/2/025013
- Coley, Alan; Hervik, Sigbjørn; Pelavas, Nicos
  
  (2009)
  Lorentzian spacetimes with constant curvature invariants in four dimensions.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 26.
  
  Hefte 12.
  
  DOI: 10.1088/0264-9381/26/12/125011
- Coley, Alan; Hervik, Sigbjørn; Papadopoulos, G.; Pelavas, Nicos
  
  (2009)
  Kundt spacetimes.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 26.
  
  Hefte 10.
  
  DOI: 10.1088/0264-9381/26/10/105016
- Coley, Alan; Hervik, Sigbjørn; Lim, Woei Chet; MacCallum, Malcolm
  
  (2009)
  Properties of kinematic singularities.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 26.
  
  Hefte 21.
  
  DOI: 10.1088/0264-9381/26/21/215008
- Brannlund, Johan; Coley, Alan; Hervik, Sigbjørn
  
  (2009)
  Holonomy, decomposability, and relativity(1).
  Canadian journal of physics (Print).
  
  ISSN 0008-4204.
  
  Volum 87.
  
  Hefte 3.
  
  s.241-243.
  
  DOI: 10.1139/P08-092
- Coley, A.; Hervik, Sigbjørn
  
  (2009)
  Note on the invariant classification of vacuum type D spacetimes.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 26.
  
  Hefte 24.
  
  DOI: 10.1088/0264-9381/26/24/247001
- Coley, Alan; Gibbons, Gary; Hervik, Sigbjørn; Pope, C.N.
  
  (2008)
  Metrics with vanishing quantum corrections.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 25.
  
  Hefte 14.
  
  DOI: 10.1088/0264-9381/25/14/145017
- Brannlund, Johan; Coley, Alan; Hervik, Sigbjørn
  
  (2008)
  Supersymmetry, holonomy and Kundt spacetimes.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 25.
  
  Hefte 19.
  
  DOI: 10.1088/0264-9381/25/19/195007
- Coley, Alan; Hervik, Sigbjørn
  
  (2008)
  A note on tilted Bianchi type VIh models: the type III bifurcation.
  Classical and Quantum Gravity.
  
  ISSN 0264-9381.
  
  Volum 25.
  
  Hefte 19.
  
  DOI: 10.1088/0264-9381/25/19/198001
Bøker og kapitler
- Hervik, Sigbjørn; Kruglikov, Boris; Markina, Irina; The, Dennis
  
  (2022)
  
  Geometry, Lie Theory and Applications: The Abel Symposium 2019.
  
  Springer.
  
  ISBN 978-3-030-81295-9.
  
  Hefte 16.
- Hervik, Sigbjørn; Kruglikov, Boris; Markina, Irina; The, Dennis
  
  (2022)
  Geometry, Lie Theory and Applications: The Abel Symposium 2019.
  Springer.
  
  ISBN 978-3-030-81295-9.
  
  DOI: 10.1007/978-3-030-81296-6
Formidling
- Tranberg, Anders; Hervik, Sigbjørn; Wehus, Ingunn Kathrine; Nielsen, Alex Bentley
  
  (2023)
  
  Q&A - Generell relativitet og interstellar vitenskap.
  
  Wonderful World -nordisk festival for filosofi og vitenskap ;
  
  2023-06-01 - .
- Hervik, Sigbjørn
  
  (2022)
  
  On spaces having identical polynomial curvature invariants. .
  
  Norsk Matematikermøte 2022;
  
  2022-09-01 - 2022-09-02.
- Hervik, Sigbjørn
  
  (2018)
  
  On spaces having identical polynomial curvature invariants.
  
  Geometry and Relativity;
  
  2018-11-15.
- Hervik, Sigbjørn
  
  (2016)
  
  Wick rotations and Holomorphic Riemannian geometry.
  
  Geometry and Lie theory;
  
  2016-11-03 - 2016-11-04.
- Hervik, Sigbjørn
  
  (2015)
  
  Differensialligninger.
  
  RFK fagdag for VGS;
  
  2015-11-13 - .
- Hervik, Sigbjørn
  
  (2014)
  
  Følger, rekker og diskret matematikk.
  
  Åpen Fagdag RFK;
  
  2014-11-07 - .
- Hervik, Sigbjørn
  
  (2014)
  
  Partikkelfysikk.
  
  Gjesteforelesning;
  
  2014-11-12 - .
- Hervik, Sigbjørn
  
  (2014)
  
  Abelprisen 2014.
  
  Abelprisen 2014;
  
  2014-05-21 - .
- Hervik, Sigbjørn
  
  (2014)
  
  The Universe -- Cracking the code.
  
  Passwords 14;
  
  2014-12-08 - 2014-12-10.
- Hervik, Sigbjørn
  
  (2012)
  
  Nobelprisen i Fysikk 2011.
  
  NTVA - seminarer;
  
  2012-02-09.
- Hervik, Sigbjørn
  
  (2011)
  
  Herfra til Uendeligheten.
  
  Script.
  
  Hefte 2.
Kunstnerisk produksjon
Kommersialisering