Primordial gravity wave background anisotropies

@article{Alba2015PrimordialGW,
  title={Primordial gravity wave background anisotropies},
  author={Vasyl Alba and Juan Maldacena},
  journal={Journal of High Energy Physics},
  year={2015},
  volume={2016},
  pages={1-8}
}
A bstractWe consider the primordial gravity wave background produced by inflation. We compute the small anisotropy produced by the primordial scalar fluctuations. 
View on Springer
link.springer.com
30 Citations
Highly Influential Citations
1
Background Citations
5
Methods Citations
2
Results Citations
2

30 Citations

Antipodal angular correlations of inflationary stochastic gravitational wave background

,

Enhancing gravitational wave anisotropies with peaked scalar sources

Gravitational wave (GW) backgrounds of cosmological origin are expected to be nearly isotropic, with small anisotropies resembling those of the cosmic microwave background. We analyse the case of a…

Multimessenger cosmology: Correlating cosmic microwave background and stochastic gravitational wave background measurements

Characterizing the physical properties of the stochastic gravitational wave background (SGWB) is a key step towards identifying the nature of its possible origin. We focus our analysis on SGWB…

Primordial stochastic gravitational wave background anisotropies: in-in formalization and applications

Primordial non-Gaussianities of the scalar(tensor)-tensor-tensor type supporting a non-trivial squeezed component are known to induce anisotropies in the stochastic gravitational wave background. We…

Testing the early universe with anisotropies of the gravitational wave background

In this work we analyse in detail the possibility of using small and intermediate-scale gravitational wave anisotropies to constrain the inflationary particle content. First, we develop a…

Cross-correlations as a diagnostic tool for primordial gravitational waves

We explore and corroborate, by working out explicit examples, the effectiveness of cross-correlating stochastic gravitational wave background anisotropies with CMB temperature fluctuations as a way…

Gravitational waves from inflation

The production of a stochastic background of gravitational waves is a fundamental prediction of any cosmological inflationary model. The features of such a signal encode unique information about the…

Anisotropies and non-Gaussianity of the cosmological gravitational wave background

The Stochastic Gravitational Wave Background (SGWB) is expected to be a key observable for Gravitational Wave (GW) interferometry. Its detection will open a new window on early universe cosmology and…

Detection of early-universe gravitational-wave signatures and fundamental physics

Detection of a gravitational-wave signal of non-astrophysical origin would be a landmark discovery, potentially providing a significant clue to some of our most basic, big-picture scientific…

Imprint of relativistic particles on the anisotropies of the stochastic gravitational-wave background

The stochastic gravitational-wave background (SGWB) is expected to be a key observable for gravitational-wave interferometry. Its detection will open a new window on early Universe cosmology, on the…

References

SHOWING 1-10 OF 28 REFERENCES

Inflationary gravitational waves and the evolution of the early universe

We study the effects of various phenomena which may have happened in the early universe on the spectrum of inflationary gravitational waves. The phenomena include phase transitions, entropy…

Fluctuations in the New Inflationary Universe

The spectrum of density perturbations is calculated in the new-inflationary-universe scenario. The main source is the quantum fluctuations of the Higgs field, which lead to fluctuations in the time…

Adiabatic CMB perturbations in pre - big bang string cosmology

Probing the reheating temperature of the universe with a gravitational wave background

The thermal history of the universe after big bang nucleosynthesis (BBN) is well understood both theoretically and observationally, and recent cosmological observations also begin to reveal the…

Dynamics of phase transition in the new inflationary universe scenario and generation of perturbations

Quantum Fluctuations and a Nonsingular Universe

Over a finite time, quantum fluctuations of the curvature disrupt the nonsingular cosmological solution corresponding to a universe with a polarized vacuum. If this solution held as an intermediate…

Action approach to cosmological perturbations: the second-order metric in matter dominance

We study nonlinear cosmological perturbations during post-inflationary evolution, using the equivalence between a perfect barotropic fluid and a derivatively coupled scalar field with Lagrangian .…

Non-Gaussian features of primordial fluctuations in single field inflationary models

We compute the three point correlation functions for primordial scalar and tensor fluctuations in single field inflationary models. We obtain explicit expressions in the slow roll limit where the…

Cosmology for Grand Unified Theories with Radiatively Induced Symmetry Breaking

The treatment of first-order phase transitions for standard grand unified theories is shown to break down for models with radiatively induced spontaneous symmetry breaking. It is argued that proper…

Generating the curvature perturbation without an inflaton