Thin tubes of a massless scalar field as a possible source of dark energy

Abstract

Abstract In the proposed work, we have investigated the possibility of using an ideal gas of thin tubes of a massless scalar field as a source of Dark Energy. If we assume the homogeneity and isotropy of such an ideal gas, then its equation of state can be estimated by examining the gravitational field of a solitary tube of a scalar field. We have studied the gravitational field of a thin axially symmetric tube of a massless scalar field that moves without changing its shape and size. It was shown that the degree of rarefaction of the gas of thin tubes of a massless scalar field significantly affects its equation of state. So, for example, for a highly rarefied gas, its equation of state will tend to the equality p = − ρ , and for a super-compressed gas, to the equality p = ρ . In this case, when expanding, such a gas must sequentially go through all states from p ≈ ρ to p → − ρ .