On the phantom barrier crossing and the bounds on the speed of sound in non-minimal derivative coupling theories

DOI10.1088/1361-6382/AAAE24zbMath1390.83472arXiv1707.03885OpenAlexW2735264447MaRDI QIDQ4562924

Ulises Nucamendi, Israel Quiros, Tame Gonzalez, Francisco Antonio Horta-Rangel, Joel Saavedra, Ricardo García-Salcedo

Publication date: 6 June 2018

Published in: Classical and Quantum Gravity (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/1707.03885

zbMATH Keywords

causalityscalar-tensor theoryscalar perturbationstensor perturbationsgradient instabilityOstrogradsky instabilityphantom barrier crossingsquared sound speed

Mathematics Subject Classification ID

Relativistic cosmology (83F05) Space-time singularities, cosmic censorship, etc. (83C75) Relativistic gravitational theories other than Einstein's, including asymmetric field theories (83D05) Quantum hydrodynamics and relativistic hydrodynamics (76Y05) Hydrodynamic and hydromagnetic problems in astronomy and astrophysics (85A30)

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Cites Work

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• The Scalar-Tensor Theory of Gravitation
• On the second law of thermodynamics in modified Gauss–Bonnet gravity
• Mach's Principle and a Relativistic Theory of Gravitation. II
• Perturbations in \(k\)-inflation

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