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17 papers · 1 filter
Stable Islands of Weak Gravity
Linus Thummel, Benjamin Bose, Alkistis Pourtsidou
We present an exploration of the phenomenology of Horndeski gravity, focusing on regimes that produce weak gravity compared to General Relativity. This letter introduces a novel me…
The influence of laser relative intensity noise in the Laser Interferometer Space Antenna
Lennart Wissel, Olaf Hartwig, Jean-Baptiste Bayle +4
LISA is an upcoming ESA mission that will detect gravitational waves in space by interferometrically measuring the separation between free-falling test masses at picometer precisio…
Aberration of gravitational waveforms by peculiar velocity
Camille Bonvin, Giulia Cusin, Cyril Pitrou +3
One key prediction of General Relativity is that gravitational waves are emitted with a pure spin-2 polarisation. Any extra polarisation mode, spin-1 or spin-0, is consequently con…
Chameleon Screening Depends on the Shape and Structure of NFW Halos
Andrius Tamosiunas, Chad Briddon, Clare Burrage +2
Chameleon gravity is an example of a model that gives rise to interesting phenomenology on cosmological scales while simultaneously possessing a screening mechanism, allowing it to…
Cosmological evolution of viable models in the generalized scalar-tensor theory
Shun Arai, Purnendu Karmakar, Atsushi Nishizawa
We investigate the parameter distributions of the viable generalized scalar-tensor theory with conventional dust matter after GW170817 in a model-independent way. We numerically co…
Screening and degenerate kinetic self-acceleration from the nonlinear freedom of reconstructed Horndeski theories
Joe Kennedy, Lucas Lombriser, Andy Taylor
We have previously presented a reconstruction of Horndeski scalar-tensor theories from linear cosmological observables. It includes free nonlinear terms which can be added onto the…