Corpus ID: 174803082

Higher Derivative Theory For Curvature Term Coupling With Scalar Field

@article{Joshi2019HigherDT,
  title={Higher Derivative Theory For Curvature Term Coupling With Scalar Field},
  author={P. Joshi and S. Panda},
  journal={arXiv: General Relativity and Quantum Cosmology},
  year={2019}
}

P. Joshi, S. Panda

Published 2019

Physics

arXiv: General Relativity and Quantum Cosmology

Higher order derivative theories, generally suffer from instabilities, known as Ostrogradsky instabilities. This issue can be resolved by removing any existing degeneracy present in such theories. We consider a model involving at most second order derivatives of scalar field non-minimally coupled to curvature terms. Here we perform (3+1) decomposition of Lagrangian to separate second order time derivative form the rest. This is useful to check the degeneracy hidden in the Lagrangian will help… CONTINUE READING

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