There is accumulating evidence that (fundamental) scalar fields may exist in nature. The
gravitational collapse of such a boson cloud would lead to a boson star (BS) as a new type …

Scalar fields have played an important role in the development of the fundamental theories
of physics as well as in other branches of physics such as gravitation and cosmology. For a …

We study an impact of self-interacting bosonic dark matter (DM) on various observable
properties of neutron stars (NSs). The analysis is performed for asymmetric DM with masses …

We provide an approximate analytical expression of the mass-radius relation of a Newtonian
self-gravitating Bose-Einstein condensate (BEC) with short-range interactions described by …

Binary systems containing boson stars—self-gravitating configurations of a complex scalar
field—can potentially mimic black holes or neutron stars as gravitational-wave sources. We …

The'gravastar'picture developed by Mazur and Mottola is one of a very small number of
serious challenges to our usual conception of a'black hole'. In the gravastar picture there is …

We develop the suggestion that dark matter could be a Bose-Einstein condensate. We
determine the mass-radius relation of a Newtonian self-gravitating Bose-Einstein …

We derive the upper and lower limits for the basic physical parameters (mass–radius ratio,
anisotropy, redshift and total energy) for arbitrary anisotropic general relativistic matter …

We analyse prospects for the use of Bose-Einstein condensates as condensed-matter
systems suitable for generating a genericeffective metric', and for mimicking kinematic …

We present a generalisation of the curative initial data construction derived for equal-mass
compact binaries in Helfer et al (2019 Phys. Rev. D 99 044046; 2022 Class. Quantum Grav …