Cross-correlations as a diagnostic tool for primordial gravitational waves
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2021/03/088
Abstract: 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 to establish the primordial nature of a given gravitational wave… read more here.
Keywords: primordial gravitational; gravitational wave; tool primordial; correlations diagnostic ... See more keywords
The stochastic gravitational wave background from primordial gravitational atoms
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2024/11/039
Abstract: We propose a scenario of primordial gravitational atoms (PGAs), which may exist in the current and past universe due to spinning primordial black holes (PBHs) and very light bosonic fields. In a monochromatic mass scenario… read more here.
Keywords: gravitational wave; primordial gravitational; gravitational atoms; stochastic gravitational ... See more keywords
Observable primordial gravitational waves from non-minimally coupled R 2 Palatini modified gravity
Sign Up to like & getrecommendations! Published in 2025 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2025/05/073
Abstract: We probe the spectrum of primordial gravitational waves (GWs) produced during the eras of hyperkination, kination, and reheating in a non-minimally coupled, ℒ ∝ (1 + ξχ/M Pl) t (R + αR 2), modified gravity… read more here.
Keywords: gravitational waves; gravity; primordial gravitational; modified gravity ... See more keywords
Development of 6 inch 80–170 GHz Broadband Silicon Plated Horn Antenna Arrays for Primordial Gravitational Wave Search
Sign Up to like & getrecommendations! Published in 2025 at "Research in Astronomy and Astrophysics"
DOI: 10.1088/1674-4527/adc187
Abstract: Searching for primordial gravitational waves in the cosmic microwave background (CMB) polarization signal is one of the key topics in modern cosmology. Cutting-edge CMB telescopes require thousands of pixels to maximize mapping speed. Using a… read more here.
Keywords: antenna arrays; wave search; gravitational wave; 170 ghz ... See more keywords
A framework to mitigate patchy reionization contamination on the primordial gravitational wave signal
Sign Up to like & getrecommendations! Published in 2022 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1149
Abstract: One of the major goals of future cosmic microwave background (CMB) B-mode polarization experiments is the detection of primordial gravitational waves through an unbiased measurement of the tensor-to-scalar ratio r. Robust detection of this signal… read more here.
Keywords: reionization; contamination; mode polarization; primordial gravitational ... See more keywords
Polarized primordial gravitational waves in the ghost-free parity-violating gravity
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.101.043528
Abstract: The tests of parity symmetry in the gravitational interaction is an attractive issue in gravitational-wave astronomy. In the general theories of gravity with parity violation, one of the fundamental results is that primordial gravitational waves… read more here.
Keywords: gravitational waves; free parity; parity; primordial gravitational ... See more keywords
Intermittent null energy condition violations during inflation and primordial gravitational waves
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review D"
DOI: 10.1103/physrevd.103.083521
Abstract: Primordial null energy condition (NEC) violation would imprint a blue-tilted spectrum on gravitational wave background (GWB). However, its implications on the GWB might be far richer than expected. We present a scenario, in which after… read more here.
Keywords: primordial gravitational; null energy; energy condition; inflation ... See more keywords
Primordial gravitational waves of big bounce cosmology in light of stochastic gravitational wave background
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review D"
DOI: 10.1103/physrevd.110.083535
Abstract: Primordial gravitational waves from the very early stages of the universe, such as inflation or bounce processes, are an irreducible cosmological source of the stochastic gravitational wave background (SGWB). The recent detection of SGWB signals… read more here.
Keywords: big bounce; gravitational wave; gravitational waves; primordial gravitational ... See more keywords
Impact of the reionization history on constraining primordial gravitational waves in future all-sky cosmic microwave background experiments
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review D"
DOI: 10.1103/physrevd.111.083555
Abstract: We explore the impact of the reionization history on examining the shape of the power spectrum of the primordial gravitational waves (PGWs) with the cosmic microwave background (CMB) polarization. The large-scale CMB generated from the… read more here.
Keywords: history; gravitational waves; reionization history; impact reionization ... See more keywords
Measuring the Primordial Gravitational-Wave Background in the Presence of Astrophysical Foregrounds.
Sign Up to like & getrecommendations! Published in 2020 at "Physical review letters"
DOI: 10.1103/physrevlett.125.241101
Abstract: Primordial gravitational waves are expected to create a stochastic background encoding information about the early Universe that may not be accessible by other means. However, the primordial background is obscured by an astrophysical foreground consisting… read more here.
Keywords: background; background presence; primordial gravitational; astrophysical foreground ... See more keywords
Spectrum of Primordial Gravitational Waves in Modified Gravities: A Short Overview
Sign Up to like & getrecommendations! Published in 2022 at "Symmetry"
DOI: 10.3390/sym14040729
Abstract: In this work, we shall exhaustively study the effects of modified gravity on the energy spectrum of the primordial gravitational waves background. S. Weinberg has also produced significant works related to the primordial gravitational waves,… read more here.
Keywords: gravitational waves; modified gravity; primordial gravitational; gravity ... See more keywords