Polymer Schwarzschild black hole: An effective metric
We consider the modified Einstein equations obtained in the framework of effective
spherically symmetric polymer models inspired by loop quantum gravity. When one takes …
spherically symmetric polymer models inspired by loop quantum gravity. When one takes …
A theory of type-II minimally modified gravity
A De Felice, A Doll, S Mukohyama - Journal of Cosmology and …, 2020 - iopscience.iop.org
We propose a modified gravity theory that propagates only two local gravitational degrees of
freedom and that does not have an Einstein frame. According to the classification in [2], this …
freedom and that does not have an Einstein frame. According to the classification in [2], this …
Minimally modified gravity: a Hamiltonian construction
S Mukohyama, K Noui - Journal of Cosmology and Astroparticle …, 2019 - iopscience.iop.org
Minimally modified gravity theories are modifications of general relativity with two local
gravitational degrees of freedom in four dimensions. Their construction relies on the …
gravitational degrees of freedom in four dimensions. Their construction relies on the …
Minimally modified gravity fitting Planck data better than CDM
K Aoki, A De Felice, S Mukohyama, K Noui… - The European Physical …, 2020 - Springer
We study the phenomenology of a class of minimally modified gravity theories called f (H) f
(H) theories, in which the usual general relativistic Hamiltonian constraint is replaced by a …
(H) theories, in which the usual general relativistic Hamiltonian constraint is replaced by a …
Spatially covariant gravity theories with two tensorial degrees of freedom: the formalism
X Gao, ZB Yao - Physical Review D, 2020 - APS
Within the general framework of spatially covariant theories of gravity, we study the
conditions for having only the two tensorial degrees of freedom. Generally, there are three …
conditions for having only the two tensorial degrees of freedom. Generally, there are three …
Minimally modified gravity with auxiliary constraints formalism
We investigate the possibility of reducing the number of degrees of freedom (dof) starting
from generic metric theories of gravity by introducing multiple auxiliary constraints (ACs) …
from generic metric theories of gravity by introducing multiple auxiliary constraints (ACs) …
Phenomenology in type-I minimally modified gravity
K Aoki, A De Felice, C Lin… - Journal of Cosmology …, 2019 - iopscience.iop.org
We study cosmology in a class of minimally modified gravity (MMG) with two local
gravitational degrees of freedom. We classify modified gravity theories into type-I and type-II …
gravitational degrees of freedom. We classify modified gravity theories into type-I and type-II …
Minimal Theory of Bigravity: construction and cosmology
A De Felice, F Larrouturou… - Journal of Cosmology …, 2021 - iopscience.iop.org
Following the path of minimalism in alternative theories of gravity, we construct the" Minimal
Theory of Bigravity"(MTBG), a theory of two interacting spin-2 fields that propagates only four …
Theory of Bigravity"(MTBG), a theory of two interacting spin-2 fields that propagates only four …
Observational bounds on extended minimal theories of massive gravity: new limits on the graviton mass
A De Felice, S Kumar, S Mukohyama… - Journal of Cosmology …, 2024 - iopscience.iop.org
In this work, we derive for the first time observational constraints on the extended Minimal
Theory of Massive Gravity (eMTMG) framework in light of Planck-CMB data, geometrical …
Theory of Massive Gravity (eMTMG) framework in light of Planck-CMB data, geometrical …