401 citations · 1.8k across the 42 of their papers we have counts for
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Asymptotics with a positive cosmological constant: III. The quadrupole formula
Abhay Ashtekar, Béatrice Bonga, Aruna Kesavan
Almost a century ago, Einstein used a weak field approximation around Minkowski space-time to calculate the energy carried away by gravitational waves emitted by a time changing ma…
Gravitational waves from isolated systems: Surprising consequences of a positive cosmological constant
Abhay Ashtekar, Béatrice Bonga, Aruna Kesavan
There is a deep tension between the well-developed theory of gravitational waves from isolated systems and the presence of a positive cosmological constant , however tiny. In pa…
Phenomenological investigation of a quantum gravity extension of inflation with the Starobinsky potential
Béatrice Bonga, Brajesh Gupt
We investigate the pre-inflationary dynamics of inflation with the Starobinsky potential, favored by recent data from the Planck mission, using techniques developed to study cosmol…
Inflation with the Starobinsky potential in Loop Quantum Cosmology
Béatrice Bonga, Brajesh Gupt
A self-consistent pre-inflationary extension of the inflationary scenario with the Starobinsky potential, favored by Planck data, is studied using techniques from loop quantum cosm…
Asymptotics with a positive cosmological constant: II. Linear fields on de Sitter space-time
Abhay Ashtekar, Béatrice Bonga, Aruna Kesavan
Linearized gravitational waves in de Sitter space-time are analyzed in detail to obtain guidance for constructing the theory of gravitational radiation in presence of a positive co…