Journal of Holography Applications in Physics

The Big Bang Firewall and the Emergence of Spacetime

Document Type : Regular article

Authors

1 LPTHE, Physics Department, Faculty of Sciences, Ibnou Zohr University, Agadir, Morocco; CRMEF, Regional Center for Education and Training Professions, Marrakesh, Morocco

2 LPTHE, Physics Department, Faculty of Sciences, Ibnou Zohr University, Agadir, Morocco

Abstract

We propose that the Big Bang can be understood as a cosmic-scale entanglement transition occurring in a pre-geometric quantum state. Motivated by the black hole information paradox and the AMPS argument, we interpret the pre-Bang phase as an over-constrained entanglement structure producing a monogamy tension, rather than a fundamental violation of quantum mechanics. The resulting cosmic firewall is not a localized destructive barrier, but a global reorganization of quantum correlations that preserves fine-grained unitarity while allowing the emergence of semiclassical spacetime. We model the pre-Bang substrate as a quantum graph whose highly connected phase encodes dense pre-geometric correlations. Within a semiclassical approximation, the replica trick applied to the gravitational path integral leads to an entanglement--cosmology scaling relation linking variations of entanglement entropy to variations of the effective cosmological constant through the normalized spacetime volume of the emergent background. This scaling is consistent with the known dependence of de Sitter entropy on the cosmological constant. The framework provides a unitary information-theoretic mechanism for spacetime emergence, connects the thermodynamic arrow of time to post-transition entanglement growth, and extends the firewall paradigm from black hole horizons to cosmological initial conditions. It also suggests possible observational windows in primordial non-Gaussianities, stochastic gravitational-wave backgrounds, and ultra-slow variations of effective couplings.

Keywords

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[1] S. W. Hawking, “Black hole explosions,” Nature 248, 30 (1974). DOI: 10.1038/248030a0.
[2] S. W. Hawking, “Particle Creation by Black Holes,” Commun. Math. Phys. 43, 199 (1975). DOI: 10.1007/BF02345020. [Erratum: Commun. Math. Phys. 46, 206 (1976)].
[3] S. W. Hawking, “Breakdown of Predictability in Gravitational Collapse,” Phys. Rev. D 14, 2460 (1976). DOI: 10.1103/PhysRevD.14.2460.
[4] Don N. Page, “Information in black hole radiation,” Phys. Rev. Lett. 71, 3743 (1993). DOI: 10.1103/PhysRevLett.71.3743. arXiv:hep-th/9306083.
[5] Ahmed Almheiri, Donald Marolf, Joseph Polchinski, and James Sully, “Black holes: Complementarity or firewalls?” J. High Energy Phys. 2013(2), 62 (2013). DOI: 10.1007/JHEP02(2013)062.
[6] Barbara M. Terhal, “Is entanglement monogamous?” IBM J. Res. Dev. 48, 71 (2004). DOI: 10.1147/rd.481.0071.
[7] Raphael Bousso, “Firewalls from double purity,” Phys. Rev. D 88, 084035 (2013). DOI: 10.1103/PhysRevD.88.084035. arXiv:1308.2665.
[8] Juan Maldacena and Leonard Susskind, “Cool horizons for entangled black holes,” Fortschr. Phys. 61, 781 (2013). DOI: 10.1002/prop.201300020. arXiv:1306.0533.
[9] T. Banks and W. Fischler, “A Holographic cosmology,” (2001). arXiv:hep-th/0111142.
[10] Raphael Bousso, “The Holographic principle,” Rev. Mod. Phys. 74, 825 (2002). DOI: 10.1103/RevModPhys.74.825. arXiv:hep-th/0203101.
[11] Mark Van Raamsdonk, “Building up spacetime with quantum entanglement,” Gen. Rel. Grav. 42, 2323 (2010). DOI: 10.1142/S0218271810018529. arXiv:1005.3035.
[12] Gerard ’t Hooft, “Dimensional reduction in quantum gravity,” Conf. Proc. C 930308, 284 (1993). arXiv:gr-qc/9310026.
[13] Douglas Stanford and Leonard Susskind, “Complexity and Shock Wave Geometries,” Phys. Rev. D 90, 126007 (2014). DOI: 10.1103/PhysRevD.90.126007. arXiv:1406.2678.
[14] R. Penrose, “Before the big bang: An outrageous new perspective and its implications for particle physics,” Conf. Proc. C 060626, 2759 (2006).
[15] S. W. Hawking and R. Penrose, “The Singularities of gravitational collapse and cosmology,” Proc. Roy. Soc. Lond. A 314, 529 (1970). DOI: 10.1098/rspa.1970.0021.
[16] G. W. Gibbons and S. W. Hawking, “Action integrals and partition functions in quantum gravity,” Phys. Rev. D 15, 2752 (1977). DOI: 10.1103/PhysRevD.15.2752.
[17] Thomas Faulkner, Aitor Lewkowycz, and Juan Maldacena, “Quantum corrections to holographic entanglement entropy,” J. High Energy Phys. 2013(11), 74 (2013). DOI: 10.1007/JHEP11(2013)074.
[18] Aitor Lewkowycz and Juan Maldacena, “Generalized gravitational entropy,” JHEP 08, 090 (2013). DOI: 10.1007/JHEP08(2013)090. arXiv:1304.4926.
[19] G. Evenbly and G. Vidal, “Tensor network states and geometry,” J. Stat. Phys. 145, 891 (2011). DOI: 10.1007/s10955-011-0237-4.
[20] G. Evenbly and G. Vidal, “Tensor network renormalization yields the multiscale entanglement renormalization ansatz,” Phys. Rev. Lett. 115, 200401 (2015). DOI: 10.1103/PhysRevLett.115.200401.
[21] G. Vidal, “Entanglement Renormalization,” Phys. Rev. Lett. 99, 220405 (2007). DOI: 10.1103/PhysRevLett.99.220405. arXiv:cond-mat/0512165.
[22] Gerard ’t Hooft, “The Cellular Automaton Interpretation of Quantum Mechanics,” (2006). DOI: 10.1007/978-3-319-41285-6. arXiv:1405.1548.
[23] Leonard Susskind, “The transfer of entanglement: The case for firewalls,” (2012). arXiv:1210.2098.
[24] Don N. Page, “Average entropy of a subsystem,” Phys. Rev. Lett. 71, 1291 (1993). DOI: 10.1103/PhysRevLett.71.1291. arXiv:gr-qc/9305007.
[25] Pasquale Calabrese and John L. Cardy, “Entanglement entropy and quantum field theory,” J. Stat. Mech. 0406, P06002 (2004). DOI: 10.1088/1742-5468/2004/06/P06002. arXiv:hep-th/0405152.
[26] Tomasz Konopka, Fotini Markopoulou, and Simone Severini, “Quantum graphity: a model of emergent locality,” Phys. Rev. D 77, 104029 (2008). DOI: 10.1103/PhysRevD.77.104029. arXiv:0801.0861.
[27] Fotini Markopoulou and Lee Smolin, “Quantum theory from quantum gravity,” Phys. Rev. D 70, 124029 (2004). DOI: 10.1103/PhysRevD.70.124029. arXiv:gr-qc/0311059.
[28] Samuel A. Wilkinson and Andrew D. Greentree, “Energetics of the Quantum Graphity Universe,” Phys. Rev. D 90, 124003 (2014). DOI: 10.1103/PhysRevD.90.124003. arXiv:1409.2557.
[29] Y. Akrami et al., “Planck 2018 results. IX. Constraints on primordial nonGaussianity,” Astron. Astrophys. 641, A9 (2020). DOI: 10.1051/0004-6361/201935891. arXiv:1905.05697.
[30] Gabriella Agazie et al., “The NANOGrav 15 yr Data Set: Evidence for a Gravitationalwave Background,” Astrophys. J. Lett. 951, L8 (2023). DOI: 10.3847/2041- 8213/acdac6. arXiv:2306.16213.
[31] T. Rosenband et al., “Frequency Ratio of Al+ and Hg+ Single-Ion Optical Clocks; Metrology at the 17th Decimal Place,” Science 319, 1154622 (2008). DOI: 10.1126/science.1154622.
[32] J. K. Webb, J. A. King, M. T. Murphy, V. V. Flambaum, R. F. Carswell, and M. B. Bainbridge, “Indications of a spatial variation of the fine structure constant,” Phys. Rev. Lett. 107, 191101 (2011). DOI: 10.1103/PhysRevLett.107.191101. arXiv:1008.3907. 
Journal of Holography Applications in Physics
Volume 7, Issue 1
July 2026
Pages 142-161
  • Receive Date: 18 February 2026
  • Revise Date: 12 May 2026
  • Accept Date: 14 May 2026