Oscillons are spatially localised, quasi-stable configurations that emerge within scalar field theories, exhibiting coherent oscillatory behaviour over extended periods. Despite lacking a topological ...

Recent theoretical and observational advances have revitalised the study of black holes endowed with scalar fields. Traditionally, the no‐hair theorem suggested that black holes could be fully ...

Scientists typically explain gravity in terms of Einstein’s theory of general relativity. In this model, objects in the universe cause the fabric of spacetime to warp around them, creating a ...

Philosophers of physics should be more attentive to the role energy conditions play in General Relativity. I review the changing status of energy conditions for quantum fields-presently there are no ...

However, if the fluctuations of the additional fields are enhanced, they can source a significant amount of gravitational waves," said paper author and Kavli IPMU Project Researcher Valeri Vardanyan.

If asked what the great mysteries of cosmology were, I think most cosmologists would answer: inflation, dark energy, and dark matter. These three concepts are almost completely separate at present.

In physical cosmology, dark energy is a hypothetical form of energy that permeates all of space and tends to increase the rate of expansion of the universe. Assuming the existence of dark energy is ...

The theory of the representation of wave fields in terms of superpositions of monochromatic plane waves is presented for fields satisfying the inhomogeneous scalar wave equation. The discussion ...

Scalar tailored light fields spatially structured in amplitude and phase are well established in modern optics. They offer a wide range of applications in e.g. optical communication technology, ...