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- Rutherford Appleton LaboratoryGB129 papers
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5 papers · 2 filters
Cyclic and heteroclinic flows near general static spherically symmetric black holes
Ayyesha K. Ahmed, Mustapha Azreg-Aïnou, Mir Faizal +1
We investigate the Michel-type accretion onto a static spherically symmetric black hole. Using a Hamiltonian dynamical approach, we show that the standard method employed for tackl…
Cosmological Constant from a Deformation of the Wheeler-DeWitt Equation
Remo Garattini, Mir Faizal
In this paper, we consider the Wheeler-DeWitt equation modified by a deformation of the second quantized canonical commutation relations. Such modified commutation relations are in…
Bose-Einstein condensation as an alternative to inflation
Saurya Das
It was recently shown that gravitons with a very small mass should have formed a Bose-Einstein condensate in the very early Universe, whose density and quantum potential can accoun…
Cosmological reconstruction and {\it Om} diagnostic analysis of Einstein-Aether Theory
Antonio Pasqua, Surajit Chattopadhyay, Davood Momeni +3
In this paper, we will analyse the cosmological models in Einstein-aether gravity, which is a modified theory of gravity in which a time-like vector field breaks the Lorentz symmet…
Quantum Field Theory in Accelerated Frames
Arundhati Dasgupta
In this paper we re-investigate the Bogoliubov transformations which relate the Minkowski inertial vacuum to the vacuum of an accelerated observer. We implement the transformation…