Sigbjørn Hervik
Professor i anvendt matematikk
Kontakt
Telefon: 51831703
E-post: sigbjorn.hervik@uis.no
Rom: KE E-532
Organisasjonsenhet
Det teknisk-naturvitenskapelige fakultet
Institutt for matematikk og fysikk
Publikasjoner
Vitenskapelige publikasjoner
Hervik, Sigbjørn
(2024)
Left-invariant pseudo-Riemannian metrics on Lie groups: The null cone.Differential geometry and its applications.
ISSN 0926-2245.
Volum 97.
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.
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.
Normann, Ben David; Hervik, Sigbjørn
(2020)
Approaching Wonderland.Classical and Quantum Gravity.
ISSN 0264-9381.
Volum 37.
Hefte 8.
s.1-47.
Hervik, Sigbjørn; Ortaggio, Marcello
(2020)
Universal Black Holes.Journal of High Energy Physics (JHEP).
ISSN 1126-6708.
Normann, Ben David; Hervik, Sigbjørn
(2020)
Collins in Wonderland.Classical and Quantum Gravity.
ISSN 0264-9381.
Volum 37.
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.
Hervik, Sigbjørn; Ortaggio, Marcello
(2020)
Universal p-form black holes in generalized theories of gravity.European Physical Journal C.
ISSN 1434-6044.
Volum 80.
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.
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.
Hervik, Sigbjørn; McNutt, David Duncan
(2019)
Locally Homogeneous Kundt Triples and CSI Metrics.Classical and Quantum Gravity.
ISSN 0264-9381.
Volum 36.
Hefte 18.
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.
Hervik, Sigbjørn; Malek, Tomas
(2018)
Universal Walker metrics.Physica Scripta.
ISSN 0031-8949.
Volum 93.
Hefte 8.
s.1-12.
Hervik, Sigbjørn; Ortaggio, Marcello; Pravda, Vojtech
(2018)
Universal electromagnetic fields.Classical and Quantum Gravity.
ISSN 0264-9381.
Volum 35.
Hefte 17.
s.1-19.
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.
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.
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.
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.
Hervik, Sigbjørn; Pravda, Vojtech; Pravdova, Alena
(2015)
Type N universal spacetime.Journal of Physics: Conference Series (JPCS).
ISSN 1742-6588.
Volum 600.
Hefte 1.
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.
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.
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.
Hervik, Sigbjørn; Malek, Tomas; Pravda, Vojtech; Pravdova, Alena
(2015)
Type II universal spacetimes.Classical and Quantum Gravity.
ISSN 0264-9381.
Volum 32.
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.
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.
Hervik, Sigbjørn; Pravda, Vojtech; Pravdova, Alena
(2014)
Type III and N universal spacetimes.Classical and Quantum Gravity.
ISSN 0264-9381.
Volum 31.
Hefte 21.
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.
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.
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.
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.
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.
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.
Hervik, Sigbjørn
(2012)
Pseudo-Riemannian VSI spaces II.Classical and Quantum Gravity.
ISSN 0264-9381.
Volum 29.
Hefte 9.
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.
Hervik, Sigbjørn; Coley, Alan
(2011)
Pseudo-Riemannian VSI spaces.Classical and Quantum Gravity.
ISSN 0264-9381.
Volum 28.
Hefte 1.
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.
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.
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.
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.
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.
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.
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.
Barrow, John; Hervik, Sigbjørn
(2010)
Simple types of anisotropic inflation.Physical Review D. Particles and fields.
ISSN 0556-2821.
Volum 81.
Hefte 2.
Hervik, Sigbjørn; Coley, Alan
(2010)
Curvature operators and scalar curvature invariants.Classical and Quantum Gravity.
ISSN 0264-9381.
Volum 27.
Hefte 9.
Coley, Alan; Hervik, Sigbjørn; Pelavas, Nicos
(2010)
Lorentzian manifolds and scalar curvature invariants.Classical and Quantum Gravity.
ISSN 0264-9381.
Volum 27.
Hefte 10.
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.
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.
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.
Coley, Alan; Hervik, Sigbjørn; Papadopoulos, G.; Pelavas, Nicos
(2009)
Kundt spacetimes.Classical and Quantum Gravity.
ISSN 0264-9381.
Volum 26.
Hefte 10.
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.
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
(2009)
Note on the invariant classification of vacuum type D spacetimes.Classical and Quantum Gravity.
ISSN 0264-9381.
Volum 26.
Hefte 24.
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.
Brannlund, Johan; Coley, Alan; Hervik, Sigbjørn
(2008)
Supersymmetry, holonomy and Kundt spacetimes.Classical and Quantum Gravity.
ISSN 0264-9381.
Volum 25.
Hefte 19.
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.
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.
Formidling
Skartveit, Iben; Hervik, Sigbjørn
(2024)
Ta vare på realfagsheltene!.
Stavanger Aftenblad.
ISSN 0804-8991.
Hervik, Sigbjørn
(2024)
Our Mathematical Universe: Gravity, Symmetry and Dynamical Systems.
International Convergence: A Global Forum for Mathematics and Physics;
2024-10-24 - 2024-10-25.
Tranberg, Anders; Hervik, Sigbjørn; Copeland, Edmund
(2024)
Wonderful World: Dark Energy (moderator).
Wonderful World Festival, 2024;
2024-06-01 - .
Svanes, Eirik Eik; Hervik, Sigbjørn
(2024)
Introduksjon til kvantemekanikk.
Forberedelse til Fysikk OL for VGS elever;
2024-07-11 - 2024-07-13.
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.