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
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
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