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27 papers · 1 filter
Constraints on linear-negative potentials in quintessence and phantom models from recent supernova data
L. Perivolaropoulos
We study quintessence and phantom field theory models based on linear-negative potentials of the form . We investigate the predicted redshift dependence of the equation o…
The Fate of Bound Systems in Phantom and Quintessence Cosmologies
S. Nesseris, L. Perivolaropoulos
We study analytically and numerically the evolution of bound systems in universes with accelerating expansion where the acceleration either increases with time towards a Big Rip si…
Multitoroidal configurations as equilibrium flow eigenstates
G. Poulipoulis, George Throumoulopoulos, Henri Tasso
Equilibrium eigenstates of an axisymmetric magnetically confined plasma with toroidal flow are investigated by means of exact solutions of the ideal magnetohydrodynamic equations.…
Dark Matter in the Cosmos - Its Direct Detection and the Role Of Nuclear Physics
J. D. Vergados
Exotic dark matter together with dark energy or cosmological constant seem to dominate in the Universe. An even higher density of such matter seems to be gravitationally trapped in…
Exploring Novel Signatures for Direct Neutralino Searches
J. D. Vergados
Since the expected rates for neutralino-nucleus scattering are expected to be small, one should exploit all the characteristic signatures of this reaction. Such are: (i) In the sta…
Some Issues Related to the Direct Detection of SUSY Dark Matter Detection
J. D. Vergados
Since the expected rates for neutralino-nucleus scattering are expected to be small, one should exploit all the characteristic signatures of this reaction. Such are: (i) In the sta…