Aruna Kesavan

Asymptotics with a positive cosmological constant: I. Basic framework

The asymptotic structure of the gravitational field of isolated systems has been analyzed in great detail in the case when the cosmological constant

Asymptotics with a positive cosmological constant. II. Linear fields on de Sitter spacetime

\Lambda

Gravitational Waves from Isolated Systems: Surprising Consequences of a Positive Cosmological Constant.

is zero. The resulting framework lies at the foundation of research in diverse areas in gravitational science. Examples include: i) positive energy theorems in geometric analysis; ii) the coordinate invariant characterization of gravitational waves in full, non-linear general relativity; iii) computations of the energy-momentum emission in gravitational collapse and binary mergers in numerical relativity and relativistic astrophysics; and iv) constructions of asymptotic Hilbert spaces to calculate

Asymptotics with a positive cosmological constant: III. The quadrupole formula

S

Nonlocal bispectra from super cosmic variance

-matrices and analyze the issue of information loss in the quantum evaporation of black holes. However, by now observations have established that

New charge for BMS symmetries

\Lambda

Gravitational waves from isolated systems: The phantom menace of a positive cosmological constant

is positive in our universe. In this paper we show that, unfortunately, the standard framework does not extend from the

Asymptotics with a positive cosmological constant: Illustration with linear fields on de Sitter space-time

\Lambda =0

Asymptotics with a positive cosmological constant II

case to the

Asympotics with positive cosmological constant

\Lambda >0