Lorentzian wormhole in the framework of loop quantum cosmology

被引:0
|
作者
Rikpratik Sengupta
Shounak Ghosh
Mehedi Kalam
机构
[1] Aliah University,Department of Physics
[2] Government of West Bengal,Directorate of Legal Metrology, Department of Consumer Affairs
关键词
D O I
暂无
中图分类号
学科分类号
摘要
In this paper, we construct a traversable static Lorentzian wormhole in the effective scenario of Loop Quantum Cosmology (LQC), where the field equations are modified due to the ultraviolet (UV) corrections introduced at large space-time curvatures. A stable wormhole can be constructed in the effective scenario without the violation of Null energy condition (NEC) by physical matter at the throat. The NEC is effectively violated due to the corrections in the field equations from LQC, resolving the Weyl curvature singularity at the throat. However, the physical matter does violate the Strong energy condition (SEC), suggesting the interesting possibility that dark energy can be harnessed into a wormhole. A possible explanation for this is the presence of inherent pressure isotropy in the UV-corrected field equations (discussed and compared to braneworld wormholes in the discussion). No additional exotic ingredient (violating NEC) is required, avoiding quantum instabilities. The tidal forces at the throat do not diverge and also the throat is found to be stable. The wormhole features an attractive geometry. LQC can resolve both types of curvature singularities appearing at the black hole centre and wormhole throat, without exotic matter.
引用
收藏
相关论文
共 50 条
  • [41] Singularities in Loop Quantum Cosmology
    Cailleteau, Thomas
    Cardoso, Antonio
    Vandersloot, Kevin
    Wands, David
    [J]. PHYSICAL REVIEW LETTERS, 2008, 101 (25)
  • [42] Perturbations in loop quantum cosmology
    Nelson, W.
    Agullo, I.
    Ashtekar, A.
    [J]. VISHWA MIMANSA: AN INTERPRETATIVE EXPOSITION OF THE UNIVERSE. PROCEEDINGS OF THE 7TH INTERNATIONAL CONFERENCE ON GRAVITATION AND COSMOLOGY, 2014, 484
  • [43] Quantum reduced loop gravity and the foundation of loop quantum cosmology
    Alesci, Emanuele
    Cianfrani, Francesco
    [J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2016, 25 (08):
  • [44] Loop quantum cosmology from quantum reduced loop gravity
    Alesci, Emanuele
    Cianfrani, Francesco
    [J]. EPL, 2015, 111 (04)
  • [45] Inflationary cosmology and oscillating universes in loop quantum cosmology
    Mulryne, DJ
    Nunes, NJ
    Tavakol, R
    Lidsey, JE
    [J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2005, 20 (11): : 2347 - 2357
  • [46] The quantum configuration space of loop quantum cosmology
    Velhinho, J. M.
    [J]. CLASSICAL AND QUANTUM GRAVITY, 2007, 24 (14) : 3745 - 3758
  • [47] Lorentzian loop quantum gravity vertex amplitude
    Pereira, Roberto
    [J]. CLASSICAL AND QUANTUM GRAVITY, 2008, 25 (08)
  • [48] Hexagon model for 3D Lorentzian quantum cosmology
    Dittrich, B
    Loll, R
    [J]. PHYSICAL REVIEW D, 2002, 66 (08):
  • [49] Complex actions and causality violations: applications to Lorentzian quantum cosmology
    Asante, Seth K.
    Dittrich, Bianca
    Padua-Arguelles, Jose
    [J]. CLASSICAL AND QUANTUM GRAVITY, 2023, 40 (10)
  • [50] Real no-boundary wave function in Lorentzian quantum cosmology
    Dorronsoro, J. Diaz
    Halliwell, J. J.
    Hartle, J. B.
    Hertog, T.
    Janssen, O.
    [J]. PHYSICAL REVIEW D, 2017, 96 (04)