Superfluid stars and Q-balls in curved spacetime
arXiv:2103.00818 · doi:10.1063/10.0003166
Abstract
Within 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 symmetric 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 pages, 7 figures
References in corpus (7)
- Constraining scalar fields with stellar kinematics and collisional dark matter
- Volume element structure and roton-maxon-phonon excitations in superfluid helium beyond the Gross-Pitaevskii approximation
- An alternative to dark matter and dark energy: Scale-dependent gravity in superfluid vacuum theory
- Resolving the puzzle of sound propagation in liquid helium at low temperatures
- On the dynamical nature of nonlinear coupling of logarithmic quantum wave equation, Everett-Hirschman entropy and temperature
- Nonlinear wave-mechanical effects in Korteweg fluid magma transport
- Temperature-driven dynamics of quantum liquids: Logarithmic nonlinearity, phase structure and rising force
Cited by in corpus (7)
- Gravitational decoupling and superfluid stars
- Kink solutions in logarithmic scalar field theory: Excitation spectra, scattering, and decay of bions
- Resolving the puzzle of sound propagation in a dilute Bose-Einstein condensate
- Galaxy rotation curves in superfluid vacuum theory
- On asymptotic behaviour of galactic rotation curves in superfluid vacuum theory
- Sound propagation in cigar-shaped Bose liquids in the Thomas-Fermi approximation: A comparative study between Gross-Pitaevskii and logarithmic models
- Acoustic oscillations in cigar-shaped logarithmic Bose-Einstein condensate in the Thomas-Fermi approximation