Wormhole solutions sourced by fluids, II: Three-fluid two-charged sources

TL;DR

This paper introduces a new class of rotating and static wormholes sourced by multiple fluids and charges, with unique physical properties and potential implications for testing black hole candidates.

Contribution

It presents a novel metric construction method for multi-fluid, multi-charged wormholes, including rotating solutions, which are difficult to derive by traditional integration.

Findings

Generated new rotating and static wormhole solutions with multiple fluids and charges.

Discovered conditions under which closed timelike curves are avoided in rotating wormholes.

Identified unique angular velocity corrections absent in Kerr-Newman black holes.

Abstract

Lack of a consistent metric for generating rotating wormholes motivates us to present a new one endowed with interesting physical and geometrical properties. When combined with the generalized method of superposition of fields, which consists in attaching a form of matter to each moving frame, it generates massive and charged (charge without charge) two-fluid-sourced, massive and two-charged three-fluid-sourced, rotating as well as new static wormholes which, otherwise, can hardly be derived by integration. If the lapse function of the static wormhole is bounded from above, no closed timelike curves occur in the rotating counterpart. For positive energy densities dying out faster than $1/r$, the angular velocity includes in its expansion a correction term, to the leading one that corresponds to ordinary stars, proportional to $\ln r/r^4$. Such a term is not present in the corresponding expansion for the Kerr-Newman black hole. Based on this observation and our previous work, the dragging effects of falling neutral objects may constitute a substitute for other known techniques used for testing the nature of the rotating black hole candidates that are harbored in the center of galaxies. We discuss the possibility of generating ($n+1$)-fluid-sourced, $n$-charged, rotating as well as static wormholes.