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5 papers · 2 filters
Spherically symmetric wormhole solutions in a general anisotropic matter field
Shibaji Halder, Subhra Bhattacharya, Subenoy Chakraborty
The present work is an attempt to find possible traversable wormhole solutions in static spherically symmetric space-time supported by anisotropic matter field. Part of the work co…
Understanding gravitational particle production in quintessential inflation
Jaume de Haro, Supriya Pan, Llibert Aresté Saló
The diagonalization method, introduced by a group of Russian scientists at the beginning of seventies, is used to compute the energy density of superheavy massive particles produce…
Wormhole Solutions in Rastall Gravity Theory
Shibaji Halder, Subhra Bhattacharya, Subenoy Chakraborty
The present work looks for new wormhole solutions in the non conservative Rastall gravity. Although Rastall gravity is considered to be a higher dimensional gravity, the actual div…
Two-fluid solutions of particle-creation cosmologies
Supriya Pan, John D. Barrow, Andronikos Paliathanasis
Cosmological evolution driven incorporating continuous particle creation by the time-varying gravitational field is investigated. We consider a spatially flat, homogeneous and isot…
The Peebles -- Vilenkin quintessential inflation model revisited
Jaume Haro, Jaume Amorós, Supriya Pan
We review the well-known Peebles-Vilenkin (PV) quintessential inflation model and discuss its possible improvements in agreement with the recent observations. The improved PV model…