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Ying Li Zhang
Researcher at Institute of Cosmology and Gravitation, University of Portsmouth
Publications - 9
Citations - 584
Ying Li Zhang is an academic researcher from Institute of Cosmology and Gravitation, University of Portsmouth. The author has contributed to research in topics: Equations of motion & Tensor. The author has an hindex of 8, co-authored 8 publications receiving 471 citations. Previous affiliations of Ying Li Zhang include University of Portsmouth & Chinese Academy of Sciences.
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Cosmology in generalized Proca theories
Antonio De Felice,Lavinia Heisenberg,Ryotaro Kase,Shinji Mukohyama,Shinji Mukohyama,Shinji Tsujikawa,Ying Li Zhang +6 more
TL;DR: In this paper, the cosmological implications of generalized Proca theories are investigated for both the background and the linear perturbation by taking into account the Lagrangian up to quintic order.
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Effective gravitational couplings for cosmological perturbations in generalized Proca theories
Antonio De Felice,Lavinia Heisenberg,Ryotaro Kase,Shinji Mukohyama,Shinji Mukohyama,Shinji Tsujikawa,Ying Li Zhang +6 more
TL;DR: In this article, the authors considered the finite interactions of the generalized Proca theory including the sixth-order Lagrangian and derived the full linear perturbation equations of motion on the flat Friedmann-Lemaitre-Robertson-Walker background in the presence of a matter perfect fluid.
Journal ArticleDOI
Cosmology in generalized Proca theories
Antonio De Felice,Lavinia Heisenberg,Ryotaro Kase,Shinji Mukohyama,Shinji Mukohyama,Shinji Tsujikawa,Ying Li Zhang +6 more
TL;DR: In this paper, the cosmological implications of generalized Proca theories are investigated for both the background and the linear perturbation by taking into account the Lagrangian up to quintic order.
Journal ArticleDOI
Screening fifth forces in generalized Proca theories
Antonio De Felice,Lavinia Heisenberg,Ryotaro Kase,Shinji Tsujikawa,Ying Li Zhang,Ying Li Zhang,Gong-Bo Zhao +6 more
TL;DR: In this paper, the authors consider generalized Proca theories with second-order equations of motion in a curved space-time and study how the longitudinal scalar mode of the vector field gravitates on a spherically symmetric background.
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Black hole perturbations in vector-tensor theories: The odd-mode analysis
TL;DR: In this paper, the odd-parity black hole perturbations in generalized Proca theories were formulated up to second order and investigated whether or not black holes with vector hair suffer ghost or Laplacian instabilities.