Accelerating imperfect fluid

Publication date: Available online 20 February 2020Source: Physics Letters AAuthor(s): Hristu CuletuAbstractAn inhomogeneous fluid in accelerated motion is investigated. When the velocity field v(x) is not constant, the geometry viewed by a static observer is curved, as if the observer were immersed in a gravitational field. A velocity-dependent semiclassical gravitational potential is introduced, which obeys an Yukawa-type equation, written in Cartesian coordinates. The timelike and null geodesic equations are investigated. One finds that the fluid has zero energy density corresponding to the perfect fluid part but nonzero anisotropic energy density. The pressures will no longer depend on ħ for time intervals t>>1/m, where m is the field mass.

Source: Physics Letters A - February 22, 2020 Category: Physics Source Type: research