Sigbjørn Hervik

Normann, Ben David; Ricciardone, Angelo; Hervik, Sigbjørn; Thorsrud, Mikjel

(2021)

A study of inhomogeneous massless scalar gauge fields in cosmology.

International Journal of Modern Physics, Conference Series

ISSN 2010-1945.

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)

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

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)

Universal Black Holes.

Journal of High Energy Physics (JHEP)

ISSN 1126-6708.

DOI: 10.1007/JHEP02(2020)047

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

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.

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

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; 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; Malek, Tomas

(2018)

Universal Walker metrics.

Physica Scripta

ISSN 0031-8949.

Volum 93.

Hefte 8.

s.1-12.

DOI: 10.1088/1402-4896/aace9c

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

(2018)

On a new class of infinitesimal group actions on pseudo-Riemannian manifolds.

arXiv.org

ISSN 2331-8422.

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.

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

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

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; 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

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; 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

(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

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

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

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

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

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

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

(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)

Pseudo-Riemannian VSI spaces.

Classical and Quantum Gravity

ISSN 0264-9381.

Volum 28.

Hefte 1.

DOI: 10.1088/0264-9381/28/1/015008

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

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

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

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

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

(2011)

Universality and Constant Scalar Curvature Invariants.

ISRN Geometry

ISSN 2090-6307.

DOI: 10.5402/2011/248615

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

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

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; 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

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; 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; 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

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

Hervik, Sigbjørn

(2018)

On spaces having identical polynomial curvature invariants.

Hervik, Sigbjørn

(2016)

Wick rotations and Holomorphic Riemannian geometry.

Hervik, Sigbjørn

(2015)

Differensialligninger.

Hervik, Sigbjørn

(2014)

Partikkelfysikk.

Hervik, Sigbjørn

(2014)

Følger, rekker og diskret matematikk.

Hervik, Sigbjørn

(2014)

The Universe -- Cracking the code.

Hervik, Sigbjørn

(2014)

Abelprisen 2014.

Hervik, Sigbjørn

(2012)

Nobelprisen i Fysikk 2011.

Hervik, Sigbjørn

(2011)

Herfra til Uendeligheten.

Script

Hefte 2.