The cosmological constant is the mathematical description of the energy that drives the ever-accelerating expansion of the cosmos. It's also the source of one of the most enduring and confounding ...

Theoretical physicists Joao Magueijo and Lee Smolin have proposed that time is not merely a backdrop against which the universe unfolds but a quantum variable that directly shapes cosmic expansion.

New Delhi: Researchers from Brown university have proposed that the non-trivial (complex) topology of spacetime in the simplest formulation of quantum gravity protects the cosmological constant from ...

Unimodular gravity is a variant of Einstein’s general theory of relativity in which the determinant of the spacetime metric is fixed, decoupling the cosmological constant from vacuum energy. At the ...