Accretions of various types of dark energies onto Morris–Thorne wormhole

Abstract

In this work, we have studied the accretion of dark energies onto a Morris-Thorne wormhole. Previously, in ref. (González-Díaz, arXiv:hep-th/0607137), it was shown that for quintessence like dark energy, the mass of the wormhole decreases, and for phantom like dark energy, the mass of the wormhole increases. We have assumed two types of dark energy: the variable modified Chaplygin gas and the generalized cosmic Chaplygin gas. We have found the expression of the wormhole mass in both cases. We have found the mass of the wormhole at late universe and this is finite. For our choices of the parameters and the function B(a), these models generate only quintessence dark energy (not phantom) and so the wormhole mass decreases during the evolution of the universe. Next we have assumed the five kinds of parametrizations of well-known dark-energy models. These models generate both quintessence and phantom scenarios i.e., phantom crossing models. So if these dark energies accrete onto the wormhole, then for the quintessence stage, the wormhole mass decreases up to a certain value (a finite value) and then again increases to an infinite value for the phantom stage during whole evolution of the universe. That means that if the five kinds of DE accrete onto a wormhole, the mass of the wormhole decreases up to a certain finite value and then increases in the late stage of the evolution of the universe. We have also shown these results graphically.

Can holographic dark energy increase the mass of the wormhole?

“…Hence, our observation that the holographic dark energies, when accreting on wormhole, leading to an increase in the wormhole mass in the phantom phase of the universe is in agreement with [61]. Also, the study is in agreement with [18], who showed that accretion of two types of Chaplygin gas onto Morris-Thorne Wormhole lead to increase in wormhole mass in the phantom phase of the universe. …”

“…They inspired from the quantum effects [26,27]. Different aspects of wormholes are widely studied in literature from general relativity to modified gravities [18]- [21]. Wormholes can be immersed in in a FriedmannLemaitreRobertson Walker (FLRW) universe [16,28,29].…”

Accretion Flow onto Ellis–Bronnikov Wormhole

“…Later on, Michel [19] analyzed the accretion process of a steady-state spherically symmetric flow of matter into a compact object. Consequently, several authors studied accretion process of various kinds of matter onto different types of black holes [20][21][22][23][24][25][26][27][28][29][30][31][32][33] and wormholes [34][35][36][37][38][39][40]. We should clarify that we are considering matter flow on the background of EBWH assuming that the Einstein minimally coupled scalar field φ has entirely gone into building the background EBWH geometry and that matter is flowing on top of that geometry.…”

Accretion of dark energy onto higher dimensional charged BTZ black hole

“…If dark energy accretes onto the BTZ BH, the rate of change of the mass of the black hole is expressed in terms of the density and pressure of dark energy and also we find the expression of the BH mass in terms of the density. In our previous work, we have investigated accretions of various types of dark energies (including some kinds of parametrizations of dark energy) onto a Morris-Thorne wormhole [59]. Our main motivation for this work is to examine the natures of the mass of the black hole during the accelerating expansion of the FRW universe if several kinds of dark energies accrete around the BH.…”