10.9k citations
- University of PittsburghUS1.8k papers
- Yale UniversityUS1.7k papers
- Argonne National LaboratoryUS1.7k papers
- University of OxfordGB1.7k papers
- University of MichiganUS1.7k papers
- University of ChicagoUS1.7k papers
- Michigan State UniversityUS1.7k papers
- University of GenevaCH1.7k papers
- University College LondonGB1.6k papers
- Lawrence Berkeley National LaboratoryUS1.6k papers
- The Ohio State UniversityUS1.6k papers
- Duke UniversityUS1.6k papers
176 papers · 1 filter
Accelerated expansion of the universe purely driven by scalar field fluctuations
Daniel Jiménez-Aguilar
We show that scalar field fluctuations alone can drive cosmic acceleration, provided the universe is spatially closed and the Compton wavelength of the field exceeds the radius of…
Pulsar timing array analysis in a Legendre polynomial basis
Bruce Allen, Arian L. von Blanckenburg, Ken D. Olum
We use Legendre polynomials, previously employed in this context by Lee et al., van Haasteren and Levin, and Pitrou and Cusin, to model signals in pulsar timing arrays. These repla…
Neutron Stars in Causal Scalar-Tensor Theories
Mark P. Hertzberg, Oleksandr S. Stashko
We study static, spherically symmetric neutron stars in a class of scalar-tensor theories with non-canonical kinetic terms (K-essence) obeying all causality and hyperbolicity condi…
Probability of the Initial Conditions for Inflation and Slow Contraction
Mark P. Hertzberg, Daniel Jiménez-Aguilar
Some recent studies based on numerical relativity simulations claim that slow contraction/ekpyrosis is strongly preferred over inflation as the smoothing mechanism that brought the…
Solar System Constraints on Light Propagation from Higher Derivative Corrections to General Relativity and Implications for Fundamental Physics
Mark P. Hertzberg, Rachel Nathan, Suzanna E. Semaan
While the two derivative action of gravitation is specified uniquely, higher derivative operators are also allowed with coefficients that are not specified uniquely by effective fi…
Transition from Regular Black Holes to Wormholes in Covariant Effective Quantum Gravity: Scattering, Quasinormal Modes, and Hawking Radiation
R. A. Konoplya, O. S. Stashko
Utilizing the Hamiltonian constraints approach, a quantum-corrected solution has been derived \cite{Zhang:2024ney}, which describes either a regular black hole or a traversable wor…