Static spherical wormhole models in f(R, T) gravity

被引:75
作者
Yousaf, Z. [1 ]
Ilyas, M. [2 ]
Bhatti, M. Zaeem-ul-Haq [1 ]
机构
[1] Univ Punjab, Dept Math, Quaid I Azam Campus, Lahore 54590, Pakistan
[2] Univ Punjab, Ctr High Energy Phys, Quaid I Azam Campus, Lahore 54590, Pakistan
来源
EUROPEAN PHYSICAL JOURNAL PLUS | 2017年 / 132卷 / 06期
基金
英国科研创新办公室;
关键词
THIN-SHELL WORMHOLES; F R; GRAVITATIONAL COLLAPSE; STRUCTURE SCALARS; STABILITY; INSTABILITY; COSMOLOGY; EVOLUTION; UNIVERSE; DENSITY;
D O I
10.1140/epjp/i2017-11541-6
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
This paper explores the possibility of the existence of wormhole geometries coupled with relativistic matter configurations by taking a particular model of f(R, T) gravity (where T is the trace of energy-momentum tensor). For this purpose, we take the static form of spherically symmetric spacetime and after assuming a specific form of matter and combinations of shape function, the validity of energy conditions is checked. We have discussed our results through graphical representation and studied the equilibrium background of wormhole models by taking an anisotropic fluid. The extra curvature quantities coming from f(R, T) gravity could be interpreted as a gravitational entity supporting these non-standard astrophysical wormhole models. We have shown that in the context of anisotropic fluid and R + alpha R-2 + lambda T gravity, wormhole models could possibly exist in few zones in the space of parameters without the need for exotic matter.
引用
收藏
页数:12
相关论文
共 79 条
[51]   Measurements of Ω and Λ from 42 high-redshift supernovae [J].
Perlmutter, S ;
Aldering, G ;
Goldhaber, G ;
Knop, RA ;
Nugent, P ;
Castro, PG ;
Deustua, S ;
Fabbro, S ;
Goobar, A ;
Groom, DE ;
Hook, IM ;
Kim, AG ;
Kim, MY ;
Lee, JC ;
Nunes, NJ ;
Pain, R ;
Pennypacker, CR ;
Quimby, R ;
Lidman, C ;
Ellis, RS ;
Irwin, M ;
McMahon, RG ;
Ruiz-Lapuente, P ;
Walton, N ;
Schaefer, B ;
Boyle, BJ ;
Filippenko, AV ;
Matheson, T ;
Fruchter, AS ;
Panagia, N ;
Newberg, HJM ;
Couch, WJ .
ASTROPHYSICAL JOURNAL, 1999, 517 (02) :565-586
[52]   Stress-energy of a quantized scalar field in static wormhole spacetimes [J].
Popov, AA .
PHYSICAL REVIEW D, 2001, 64 (10)
[53]   Thin-shell wormholes supported by ordinary matter in Einstein-Gauss-Bonnet gravity [J].
Richarte, Martin G. ;
Simeone, Claudio .
PHYSICAL REVIEW D, 2007, 76 (08)
[54]   Observational evidence from supernovae for an accelerating universe and a cosmological constant [J].
Riess, AG ;
Filippenko, AV ;
Challis, P ;
Clocchiatti, A ;
Diercks, A ;
Garnavich, PM ;
Gilliland, RL ;
Hogan, CJ ;
Jha, S ;
Kirshner, RP ;
Leibundgut, B ;
Phillips, MM ;
Reiss, D ;
Schmidt, BP ;
Schommer, RA ;
Smith, RC ;
Spyromilio, J ;
Stubbs, C ;
Suntzeff, NB ;
Tonry, J .
ASTRONOMICAL JOURNAL, 1998, 116 (03) :1009-1038
[55]   Bianchi Type-III String Cosmological Model with Bulk Viscous Fluid in Lyra Geometry [J].
Sahoo, P. K. ;
Nath, A. ;
Sahu, S. K. .
IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION A-SCIENCE, 2017, 41 (A1) :243-248
[56]   Cosmological parameter analysis including SDSS Lyα forest and galaxy bias:: Constraints on the primordial spectrum of fluctuations, neutrino mass, and dark energy -: art. no. 103515 [J].
Seljak, U ;
Makarov, A ;
McDonald, P ;
Anderson, SF ;
Bahcall, NA ;
Brinkmann, J ;
Burles, S ;
Cen, R ;
Doi, M ;
Gunn, JE ;
Ivezic, Z ;
Kent, S ;
Loveday, J ;
Lupton, RH ;
Munn, JA ;
Nichol, RC ;
Ostriker, JP ;
Schlegel, DJ ;
Schneider, DP ;
Tegmark, M ;
Berk, DEV ;
Weinberg, DH ;
York, DG .
PHYSICAL REVIEW D, 2005, 71 (10)
[57]   Stability of the Einstein static universe in f(R, T) gravity [J].
Shabani, Hamid ;
Ziaie, Amir Hadi .
EUROPEAN PHYSICAL JOURNAL C, 2017, 77 (01)
[58]   Charged Adiabatic LTB Gravitational Collapse in f (R) Gravity [J].
Sharif, M. ;
Yousaf, Z. .
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2016, 55 (01) :470-480
[59]   Dynamics of spherical stars with structure scalars and R plus εRn cosmology [J].
Sharif, M. ;
Yousaf, Z. .
CANADIAN JOURNAL OF PHYSICS, 2015, 93 (08) :905-911
[60]   Instability of meridional axial system in f (R) gravity [J].
Sharif, M. ;
Yousaf, Z. .
EUROPEAN PHYSICAL JOURNAL C, 2015, 75 (05)