Jerzy Plebański, Andrzej Krasiński: An introduction to general relativity and cosmology
- M. Bruni
- Philosophy
- 3 January 2009
Perturbations of spacetime: gauge transformations and gauge invariance at second order and beyond
- M. Bruni, S. Matarrese, S. Mollerach, S. Sonego
- Mathematics, Physics
- 13 September 1996
We consider in detail the problem of gauge dependence that exists in relativistic perturbation theory, going beyond the linear approximation and treating second- and higher-order perturbations. We…
Relativistic second-order perturbations of the Einstein-de Sitter Universe
- S. Matarrese, S. Mollerach, M. Bruni
- Physics
- 25 July 1997
We consider the evolution of relativistic perturbations in the Einstein-de Sitter cosmological model, including second-order effects. The perturbations are considered in two different settings: the…
Cosmological perturbations and the physical meaning of gauge invariant variables
This paper concerns gauge-invariant perturbations of Robertson-Walker spacetimes, with the aim of (1) giving a complete set of perturbation equations and (2) comparing the coordinate-based method of…
Prospects for fundamental physics with LISA
- E. Barausse, E. Berti, M. Zumalacárregui
- Physics, EducationGeneral Relativity and Gravitation
- 27 January 2020
In this paper, which is of programmatic rather than quantitative nature, we aim to further delineate and sharpen the future potential of the LISA mission in the area of fundamental physics. Given the…
Second-order perturbations of the Einstein-de Sitter Universe
- S. Matarrese, S. Mollerach, M. Bruni
- Physics
- 25 July 1997
Cosmological dynamics and dark energy with a nonlinear equation of state: a quadratic model
We investigate the general relativistic dynamics of Robertson-Walker models with a nonlinear equation of state (EoS), focusing on the quadratic case P=Po+αρ+βρ2. This may be taken to represent…
Missing link: A nonlinear post-Friedmann framework for small and large scales
- Irene Milillo, D. Bertacca, M. Bruni, A. Maselli
- Physics
- 10 February 2015
We present a nonlinear post-Friedmann framework for structure formation, generalizing to cosmology the weak-field (post-Minkowskian) approximation, unifying the treatment of small and large scales.…
Gauge-invariant perturbations in a scalar field dominated universe
The authors propose a new covariant and gauge-invariant (GI) treatment of perturbations in a Robertson-Walker universe dominated by a classical scalar field phi . They first set up the formalism,…
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