91 citations · 615 across the 55 of their papers we have counts for
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Galaxy clusters and structure formation in quintessence versus phantom dark energy universe
Zacharias Roupas, Minos Axenides, George Georgiou +1
The self-gravitating gas in the Newtonian limit is studied in the presence of dark energy with a linear and constant equation of state. Entropy extremization associates to the isot…
Modular discretization of the AdS2/CFT1 Holography
M. Axenides, E. G. Floratos, S. Nicolis
We propose a finite discretization for the black hole geometry and dynamics. We realize our proposal, in the case of extremal black holes, for which the radial and temporal near ho…
Stringy Membranes in AdS/CFT
Minos Axenides, Emmanuel Floratos, Georgios Linardopoulos
We study membrane configurations in AdS_{7/4}xS^{4/7}. The membranes are wrapped around the compact manifold S^{4/7} and are dynamically equivalent to bosonic strings in AdS_5. We…
Gravothermal instability with a cosmological constant in the canonical ensemble
Minos Axenides, George Georgiou, Zacharias Roupas
We present here how the gravothermal or Antonov's instability, which was originally formulated in the microcanonical ensemble, is modified in the presence of a cosmological constan…
Gravitational instabilities of isothermal spheres in the presence of a cosmological constant
Minos Axenides, George Georgiou, Zacharias Roupas
Gravitational instabilities of isothermal spheres are studied in the presence of a positive or negative cosmological constant, in the Newtonian limit. In gravity, the statistical e…