Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Bjaelde, Ole Eggers"'
In this small scale study we demonstrate how a gamified teaching setup can be used effectively to support student learning in a quantum mechanics course. The quantum mechanics games were research games, which were played during lectures and the learn
Externí odkaz:
http://arxiv.org/abs/1506.08128
Akademický článek
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We present a new analysis on how to distinguish between isotropic and anisotropic cosmological models based on tracking the angular displacements of a large number of distant quasars over an extended period of time, and then performing a multipole-ve
Externí odkaz:
http://arxiv.org/abs/1307.2377
We perform a detailed forecast on how well a {\sc Euclid}-like survey will be able to constrain dark energy and neutrino parameters from a combination of its cosmic shear power spectrum, galaxy power spectrum, and cluster mass function measurements.
Externí odkaz:
http://arxiv.org/abs/1304.2321
Future cluster surveys will observe galaxy clusters numbering in the hundred thousands. We consider this work how these surveys can be used to constrain dark energy parameters: in particular, the equation of state parameter w and the non-adiabatic so
Externí odkaz:
http://arxiv.org/abs/1205.0548
Results from the Wilkinson Microwave Anisotropy Probe (WMAP), Atacama Cosmology Telescope (ACT) and recently from the South Pole Telescope (SPT) have indicated the possible existence of an extra radiation component in addition to the well known three
Externí odkaz:
http://arxiv.org/abs/1205.0553
Publikováno v:
Mon. Not. R. Astron. Soc. 424, 495--501 (2012)
If we live in the vicinity of the hypothesized Great Attractor, the age of the universe as inferred from the local expansion rate can be off by three per cent. We study the effect that living inside or near a massive overdensity has on cosmological p
Externí odkaz:
http://arxiv.org/abs/1203.4567
We consider a generic type of dark energy fluid, characterised by a constant equation of state parameter w and sound speed c_s, and investigate the impact of dark energy clustering on cosmic structure formation using the spherical collapse model. Alo
Externí odkaz:
http://arxiv.org/abs/1009.0010
Autor:
Bjaelde, Ole Eggers, Das, Subinoy
Publikováno v:
Phys.Rev.D82:043504,2010
We study the possible decay of a coherently oscillating scalar field, interpreted as dark matter, into light fermions. Specifically, we consider a scalar field with sub-eV mass decaying into a Fermi sea of neutrinos. We recognize the similarity betwe
Externí odkaz:
http://arxiv.org/abs/1002.1306
Autor:
Basboll, Anders, Bjaelde, Ole Eggers
Publikováno v:
Phys.Rev.D81:123503,2010
We investigate a scenario in which neutrinos are coupled to a pseudoscalar degree of freedom $\ph$ and where decays $\nu_1 \to \nu_2+\ph$ and inverse decays are the responsible mechanism for obtaining equilibrium. In this context we discuss the impli
Externí odkaz:
http://arxiv.org/abs/0911.1771