Zloshchastiev, Konstantin G.2025-03-102025-03-102021-02Zloshchastiev, K.G. 2021. Superfluid stars and Q-balls in curved spacetime. Low Temperature Physics. 47(2): 89-95. doi:10.1063/10.00031661063-777X1090-6517 (Online)isidoc: QN5GDhttps://hdl.handle.net/10321/5841Within the framework of the theory of strongly-interacting quantum Bose liquids, we consider a general relativistic model of self-interacting complex scalar fields with logarithmic nonlinearity taken from dense superfluid models. We demonstrate the existence of gravitational equilibria in this model, described by spherically symmeric nonsingular finite-mass asymptotically-flat solutions. These equilibrium configurations can describe both massive astronomical objects, such as bosonized superfluid stars or cores of neutron stars, and finite-size particles and non-topological solitons, such as Q-balls. We give an estimate for masses and sizes of such objects.5 penQuantum Bose liquidSuperfluidity in cold starsQ-ballLogarithmic scalar gravityAstro-ph.HE0105 Mathematical Physics0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics0204 Condensed Matter PhysicsGeneral Physics5102 Atomic, molecular and optical physics5104 Condensed matter physicsArticle2025-02-1410.1063/10.0003166