LIGO and Gravitational Waves II: Nobel Lecture, December 8, 2017
Sign Up to like & getrecommendations! Published in 2018 at "Annalen der Physik"
DOI: 10.1002/andp.201800357
Abstract: The observation of gravitational waves in the Laser Interferometer Gravitational‐Wave Observatory (LIGO) was announced on February 11, 2016,1 one hundred years after Einstein proposed the existence of gravitational waves.2, 3 This observation came after more… read more here.
Keywords: waves nobel; nobel lecture; lecture december; gravitational waves ... See more keywords
Cosmic superstrings, metastable strings and ultralight primordial black holes: from NANOGrav to LIGO and beyond
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2025)095
Abstract: While topologically stable cosmic strings are disfavoured by the recent observation of nHz stochastic gravitational waves (GW) by Pulsar Timing Arrays (PTA), e.g., NANOGrav, cosmic metastable strings and superstrings are not. However, because the gravitational… read more here.
Keywords: primordial black; gravitational waves; metastable strings; pta data ... See more keywords
Topological structures, dark matter and gravitational waves in E6
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep08(2024)060
Abstract: We discuss the appearance of topological structures from the spontaneous breaking of E6 to the Standard Model via its maximal subgroup SO(10) × U(1)ψ. They include dumbbells, metastable strings, as well as domain walls bounded… read more here.
Keywords: matter gravitational; dark matter; gravitational waves; structures dark ... See more keywords
Type-I two-Higgs-doublet model and gravitational waves from domain walls bounded by strings
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep08(2024)237
Abstract: The spontaneous breaking of a U(1) symmetry via an intermediate discrete symmetry may yield a hybrid topological defect of domain walls bounded by cosmic strings. The decay of this defect network leads to a unique… read more here.
Keywords: two higgs; gravitational waves; type two; walls bounded ... See more keywords
Pre-thermalized gravitational waves
Sign Up to like & getrecommendations! Published in 2025 at "Journal of High Energy Physics"
DOI: 10.1007/jhep08(2025)125
Abstract: We investigate a novel gravitational wave (GW) production mechanism from gravitons generated during the pre-thermal phase of cosmic reheating, where the energy density is dominated by non-thermalized inflaton decay products, dubbed reheatons. We consider multiple… read more here.
Keywords: thermalized gravitational; pre thermalized; gravitational waves; inflaton ... See more keywords
Gravitational waves from resonant transitions of tidally perturbed gravitational atoms
Sign Up to like & getrecommendations! Published in 2025 at "Journal of High Energy Physics"
DOI: 10.1007/jhep11(2025)062
Abstract: Light bosons can form a gravitational atom (GA) around a spinning black hole through the superradiance proce ss. Considering the black hole to be part of a binary system, the tidal potential of the companion… read more here.
Keywords: resonant transitions; transitions tidally; black hole; waves resonant ... See more keywords
Stability and emergence of gravitational waves in the quantum cosmic phantom models
Sign Up to like & getrecommendations! Published in 2017 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-017-2254-3
Abstract: We provide an alternative interpretation of the quantum cosmic phantom models, in which the current acceleration of the universe is due to the existence of an entropy of entanglement. Subsequently, we study their stability as… read more here.
Keywords: phantom models; quantum cosmic; gravitational waves; cosmic phantom ... See more keywords
Extreme gravity tests with gravitational waves from compact binary coalescences: (II) ringdown
Sign Up to like & getrecommendations! Published in 2018 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-018-2372-6
Abstract: The LIGO/Virgo detections of binary black hole mergers marked a watershed moment in astronomy, ushering in the era of precision tests of Kerr dynamics. We review theoretical and experimental challenges that must be overcome to… read more here.
Keywords: extreme gravity; gravity tests; gravitational waves; black hole ... See more keywords
Singularities of plane gravitational waves in Einstein’s general relativity
Sign Up to like & getrecommendations! Published in 2020 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-020-02667-1
Abstract: Similar to the Schwarzschild coordinates for spherical black holes, the Baldwin, Jeffery and Rosen (BJR) coordinates for plane gravitational waves are often singular, and extensions beyond such singularities are necessary, before studying asymptotic properties of… read more here.
Keywords: left right; gravitational waves; plane gravitational; chi ... See more keywords
Quantum two-level systems and gravitational waves
Sign Up to like & getrecommendations! Published in 2024 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-025-03385-2
Abstract: We study the interaction between gravitational waves and a quantum two-level system consisting of a spin 1/2 particle using the formalism of the proper detector frame. This approach highlights the effects of gravitational waves on… read more here.
Keywords: two level; waves quantum; gravitational waves; level systems ... See more keywords
Bursts of gravitational waves due to crustquake from pulsars
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Astrophysics and Astronomy"
DOI: 10.1007/s12036-020-09631-0
Abstract: We revisit here a possibility of generation of gravitational wave (GW) bursts due to a very quick change in the quadrupole moment (QM) of a deformed spheroidal pulsar as a result of crustquake. Since it… read more here.
Keywords: gravitational waves; waves due; crustquake pulsars; due crustquake ... See more keywords