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J-PAS: The Javalambre-Physics of the Accelerated Universe Astrophysical Survey

- N. Benı́tez, R. Dupke, +149 authors L. Valdivielso
- Physics
- 20 March 2014

The Javalambre-Physics of the Accelerated Universe Astrophysical Survey (J-PAS) is a narrow band, very wide field Cosmological Survey to be carried out from the Javalambre Observatory in Spain with a… Expand

Homogeneity of Riemannian space-times of Gödel type

- M. J. Reboucas, J. Tiomno
- Physics
- 15 September 1983

The conditions for space-time homogeneity of a Riemannian manifold with a Goedel-type metric are examined. The Raychaudhuri-Thakurta necessary conditions for space-time homogeneity are shown to be… Expand

Energy conditions bounds on f(T) gravity

- Dillon T. Liu, M. J. Reboucas
- Physics
- 6 July 2012

In the standard approach to cosmological modeling in the framework of general relativity, the energy conditions play an important role in the understanding of several properties of the Universe,… Expand

Energy conditions and cosmic acceleration

- J. Santos, J. Alcaniz, N. Pires, M. J. Reboucas
- Physics
- 28 February 2007

In general relativity, the energy conditions are invoked to restrict general energy-momentum tensors ${T}_{\ensuremath{\mu}\ensuremath{\nu}}$ in different frameworks, and to derive general results… Expand

Energy conditions and supernovae observations

- J. Santos, J. Alcaniz, M. J. Reboucas
- Physics
- 1 August 2006

In general relativity, the energy conditions are invoked to restrict general energy-momentum tensors ${T}_{\ensuremath{\mu}\ensuremath{\nu}}$ on physical grounds. We show that in the standard… Expand

Lookback time bounds from energy conditions

- J. Santos, J. Alcaniz, M. J. Reboucas, N. Pires
- Physics
- 12 June 2007

I. IN T R O D U C T IO N The standard Friedm ann-Lem a^�tre-Robertson-W alker (FLRW ) approach to m odelthe Universe begins with two basic assum ptions. First,itisassum ed thatour3{ dim… Expand

Stability of a rotating universe

- M. Novello, M. J. Reboucas
- Physics
- 1 November 1978

We present an exact cosmological solution of Einstein's equation which has expansion, shear, and rotation. The source of this geometry is a fluid which has not been thermalized. The model tends… Expand

Homogeneous Gödel-type solutions in hybrid metric-Palatini gravity

- J. Santos, M. J. Reboucas, A. Teixeira
- PhysicsThe European Physical Journal C
- 12 November 2016

The hybrid metric-Palatini $$f({\mathscr {R}})$$f(R) gravity is a recently devised approach to modified gravity in which it is added to the metric Ricci scalar R, in the Einstein–Hilbert Lagrangian,… Expand

Energy conditions bounds and their confrontation with supernovae data

- M. P. Lima, S. Vitenti, M. J. Reboucas
- Physics
- 5 February 2008

The energy conditions play an important role in the understanding of several properties of the Universe, including the current accelerating expansion phase and the possible existence of the so-called… Expand

Time travel in the homogeneous Som-Raychaudhuri universe

- F. M. Paiva, M. J. Reboucas, A. Teixeira
- Physics
- 28 December 1987

Abstract Properties of the rotating Som-Raychaudhuri homogeneous space-time are investigated: time-like and null geodesics, causality features, horizons and invariant characterization. An integral… Expand

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