Evolution of second-order cosmological perturbations

By Karim A. Malik, D. Wands. 2003

149 citations recorded by the source corpus.

We present a method for constructing gauge-invariant cosmological perturbations which are gauge-invariant up to second order. As an example, we give the gauge-invariant definition of the second-order curvature perturbation on uniform density hypersurfaces. Using only the energy conservation equation, we show that this curvature perturbation is conserved at second order on large scales for adiabatic perturbations.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/3a54084a2a5145e113ece9b9da390dbbaa5df7f2

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. V. Vennin
2. A. Starobinsky
3. S. Tsujikawa
4. V. Sahni
5. Antonio de Felice
6. A. Shafieloo
7. Valerio Faraoni
8. Juan García-Bellido

In Nuclear and High Energy Physics

1. V. Vennin
2. A. Starobinsky
3. S. Tsujikawa
4. Antonio de Felice
5. Valerio Faraoni
6. T. Sotiriou

Citations in the corpus

• Primordial black holes from inflation and non-Gaussianity (2018, unknown): “During inflation, when the perturbations have already left the Hubble radius, it satisfies the equation [52]”
• Correlation functions in stochastic inflation (2015, background): “To first and second orders, after a lengthy but straightforward calculation, one obtains [96]”