1.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre for Cosmology and Particle Physics PhenomenologyDK187 papers
- Centre National de la Recherche ScientifiqueFR111 papers
- Technical University of DenmarkDK83 papers
- European Organization for Nuclear ResearchCH64 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di NapoliIT59 papers
- Heidelberg UniversityDE55 papers
- Sorbonne UniversitéFR49 papers
- Massachusetts Institute of TechnologyUS46 papers
- Maersk (Denmark)DK45 papers
- Trinity College DublinIE45 papers
- University of WaterlooCA45 papers
- University of CopenhagenDK44 papers
21 papers · 1 filter
Neutrino mass bounds from cosmology
Steen Hannestad
Cosmology is at present one of the most powerful probes of neutrino properties. The advent of precision data from the cosmic microwave background and large scale structure has allo…
Record dynamics and the observed temperature plateau in the magnetic creep rate of type II superconductors
L. P. Oliveira, Henrik Jeldtoft Jensen, Mario Nicodemi +1
We use Monte Carlo simulations of a coarse grained three dimensional model to demonstrate that the experimentally observed approximate temperature independence of the magnetic cree…
Structure formation with strongly interacting neutrinos - implications for the cosmological neutrino mass bound
Steen Hannestad
We investigate a model where neutrinos are strongly coupled to a new, light scalar field. In this model neutrinos annihilate as soon as they become non-relativistic in the early un…
Cosmological bounds on masses of neutrinos and other thermal relics
Steen Hannestad
With the advent of precision data, cosmology has become an extremely powerful tool for probing particle physics. The prime example of this is the cosmological bound on light neutri…
A General Theory of Non-equilibrium Dynamics of Lipid-protein Fluid Membranes
Michael A. Lomholt, Per L. Hansen, Ling Miao
We present a general and systematic theory of non-equilibrium dynamics of multi-component fluid membranes, in general, and membranes containing transmembrane proteins, in particula…
Searching for a holographic connection between dark energy and the low-l CMB multipoles
Kari Enqvist, Steen Hannestad, Martin S. Sloth
We consider the angular power spectrum in a finite universe with different boundary conditions and perform a fit to the CMB, LSS and supernova data. A finite universe could be the…
Gapless CFL and its competition with mixed phases
Mark Alford, Chris Kouvaris, Krishna Rajagopal
We recently argued that as the density of quark matter decreases, there is a continuous transition from the color-flavor-locked (CFL) phase to a gapless "gCFL" phase. The reason is…
Cosmological constraints on the dark energy equation of state and its evolution
Steen Hannestad, Edvard Mortsell
We have calculated constraints on the evolution of the equation of state of the dark energy, w(z), from a joint analysis of data from the cosmic microwave background, large scale s…
Non-Singular Stationary Global Strings
Y. Verbin, A. L. Larsen
A field-theoretical model for non-singular global cosmic strings is presented. The model is a non-linear sigma model with a potential term for a self-gravitating complex scalar fie…
Dynamics of Domain Growth in Self-Assembled Fluid Vesicles
Mohamed Laradji, P. B. Sunil Kumar
The dynamics of phase separation in multi-component bilayer fluid vesicles is investigated by means of large-scale dissipative particle dynamics. The model explicitly accounts for…
Moment Formulas For The Quasi-Nilpotent DT-Operator
L. Aagaard, U. Haagerup
Let T be the quasi-nilpotent DT-operator. By use of Voiculescu's amalgamated R-transform we compute the moments of , where , and the Brown-measure o…
On the Origin of Kaluza's Idea of Unification
Y. Verbin, N. K. Nielsen
We argue that the starting point of Kaluza's idea of unifying electrodynamics and gravity was the analogy between gravitation and electromagnetism which was pointed out by Einstein…
Pairing gaps in atomic gases at the BCS-BEC crossover
H. Heiselberg
Strong evidence for pairing and superfluidity has recently been found in atomic Fermi gases at the BCS-BEC crossover both in collective modes and RF excitation energies. It is argu…
Probing galaxy density profiles with future supernova surveys
Edvard Mortsell, Haakon Dahle, Steen Hannestad
In this paper we discuss the possibility to measure the Hubble parameter and the slope of galaxy density profiles using future supernova data. With future supernova surveys such as…
Computing Multi-Homogeneous Bezout Numbers is Hard
Gregorio Malajovich, Klaus Meer
The multi-homogeneous Bezout number is a bound for the number of solutions of a system of multi-homogeneous polynomial equations, in a suitable product of projective spaces. Given…
G_2-structures with torsion from half-integrable nilmanifolds
Simon Chiossi, Andrew Swann
The equations for a G_2-structure with torsion on a product M^7 = N^6 x S^1 are studied in relation to the induced SU(3)-structure on N^6. All solutions are found in the case when…
Cosmological neutrinos
Steen Hannestad
The current status of neutrino cosmology is reviewed, from the question of neutrino decoupling and the presence of sterile neutrinos to the effects of neutrinos on the cosmic micro…
The Inner Amenability of the Generalized Thompson Group
Gabriel Picioroaga
In this paper we prove that the general version, F(N) of the Thompson group is inner amenable. As a consequence we generalize a result of P.Jolissaint. To do so, we prove first tha…
What is the lowest possible reheating temperature?
Steen Hannestad
We study models in which the universe exits reheating at temperatures in the MeV regime. By combining light element abundance measurements with cosmic microwave background and larg…
Current relaxation in nonlinear random media
Tsampikos Kottos, Matthias Weiss
We study the current relaxation of a wave packet in a nonlinear random sample coupled to the continuum and show that the survival probability decays as . For inter…
Potentials for hyper-Kahler metrics with torsion
Bertrand Banos, Andrew Swann
We prove that locally any hyper-Kähler metric with torsion admits an HKT potential.