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    Viscous Lambda CDM universe models 

    Grøn, Øyvind; Mostafapoor, Nouraddin (Springer Verlag, 2011-03-30)
    We explore flat ACDM models with bulk viscosity, and study the role of the bulk viscosity in the evolution of these universe models. The dynamical equations for these models are obtained and solved for some cases of ...
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    Gravitational Entropy and Inflation 

    Elgarøy, Øystein; Grøn, Øyvind (MDPI, 2013-09-04)
    The main topic of this paper is a description of the generation of entropy at the end of the inflationary era. As a generalization of the present standard model of the Universe dominated by pressureless dust and a Lorentz ...
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    Wave functions associated with time-dependent, complex-scaled Hamiltonians evaluated on a complex time grid 

    Bengtsson, Jakob; Lindroth, Eva; Selstø, Sølve (American Physical Society, 2012-01-30)
    We solve the time-dependent Schrödinger equation with themethod of uniform complex scaling and investigate the possibility to evaluate the solution on a complex time grid. With this approach it is possible to calculate ...
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    Different representations of the Levi-Civita Bertotti Robinson solution 

    Grøn, Øyvind; Johannesen, Steinar (Springer Verlag, 2013-04-23)
    The Levi-Civita Bertotti Robinson (LBR) spacetime is investigated in various coordinate systems. By means of a general formalism for constructing coordinates in conformally flat spacetimes, coordinate transformations ...
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    Notes on the Kazhdan-Lusztig Theorem on Equivalence of the Drinfeld Category and the Category of U(q)g-Modules 

    Neshveyev, Sergey; Tuset, Lars (2011)
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    Time dependent chloride diffusion coefficient : field studies of concrete exposed to marine environment in Norway 

    Markeset, Gro; Skjølsvold, Ola (RILEM Publications, 2010)
    The apparent chloride diffusion coefficient derived by evaluating chloride profiles using Fick’s 2nd law of diffusion is found to be time dependent and may decrease considerably with increasing age of the concrete. In ...
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    Components of the Hilbert scheme of space curves on low-degree smooth surfaces 

    Kleppe, Jan Oddvar; Ottem, John Christian (World Scientific Publishing, 2015-02-27)
    We study maximal families W of the Hilbert scheme, H(d, g)sc, of smooth connected space curves whose general curve C lies on a smooth surface S of degree s. We give conditions on C under which W is a generically smooth ...
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    The Cosmic Causal Mass 

    Bræck, Simen; Grøn, Øyvind; Farup, Ivar (MDPI, 2017)
    In order to provide a better understanding of rotating universe models, and in particular the Gödel universe, we discuss the relationship between cosmic rotation and perfect inertial dragging. In this connection, the concept ...
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    Electrodynamics of Radiating Charges 

    Grøn, Øyvind (Hindawi, 2012)
    The theory of electrodynamics of radiating charges is reviewed with special emphasis on the role of the Schott energy for the conservation of energy for a charge and its electromagnetic field. It is made clear that the ...
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    On the relativity of rotation 

    Grøn, Øyvind (Italian Physical Society, 2010)
    The question whether rotational motion is relative according to the general theory of relativity is discussed. Einstein’s ambivalence concerning this question is pointed out. In the present article I defend Einstein’s way ...
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    AuthorGrøn, Øyvind (12)Kleppe, Jan Oddvar (12)Neshveyev, Sergey (5)Tuset, Lars (5)Hammer, Hugo Lewi (4)Selstø, Sølve (4)Miro-Roig, Rosa Maria (3)Sandnes, Frode Eika (3)Bræck, Simen (2)Elgarøy, Øystein (2)... View MoreSubject
    Matematikk og Naturvitenskap: 400 (49)
    Hilbert scheme (11)Algebra (8)Cohen-Macaulay (5)Cosmology (4)Determinantal (3)Gorenstein (3)Parametrization (3)Teknologi: 500 (3)Theory of relativity (3)... View MoreDate Issued2017 (2)2016 (2)2015 (3)2014 (6)2013 (8)2012 (9)2011 (5)2010 (10)2009 (1)2007 (3)

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