Damghan University PressJournal of Holography Applications in Physics2783-47786120251227Three Impossible Theories19193210.22128/jhap.2025.3085.1143ENLeonard SusskindStanford Institute for Theoretical Physics and Department of Physics, Stanford University, Stanford, CA 94305-4060, USA and Google, Mountain View, CAJournal Article20251006I will begin by conjecturing a cosmological generalization of black hole complementarity (also known as the central dogma). I will then discuss three theories and argue that they are inconsistent with second law of thermodynamics if the cosmological version of the dogma is correct. The three theories are: the big rip; cyclic cosmology; and the Farhi-Guth-Guven mechanism for creating inflating universes behind black hole horizons.https://jhap.du.ac.ir/article_1932_7e68b1d2cddcb5273566ad6b64184291.pdfDamghan University PressJournal of Holography Applications in Physics2783-47786120251227Categorical Symmetries and Fiber Functors from Multiple Gaugeable Homomorphisms from 6D N=(2,0) SCFTs1040193310.22128/jhap.2025.3062.1135ENVeronica PasquarellaShanghai Institute for Mathematics and Interdisciplinary Sciences (SIMIS), Shanghai, 200433, China; Research Institute of Intelligent Complex Systems, Fudan University, Shanghai
200433, China; Department of Applied Mathematics and Theoretical Physics (DAMTP), University of Cambridge, Wilberforce Road, CB3 0WA, Cambridge, UK0000-0002-3276-0341Journal Article20250917Exploiting the symmetry topological field theory/topological order correspondence (SymTFT/TO), together with the higher-categorical structure of 6D N=(2,0) SCFTs, we prove that the total quantum dimension of the relative gaugeable algebra leading to intrinsic non-invertible symmetries between class S theories is greater with respect to the non-intrinsic case. From a higher-categorical perspective, this supports the idea that multiplicity is allowed to exceed unity in some superselection sectors.https://jhap.du.ac.ir/article_1933_67b34bc4c248f4c471f60b16a3fe614f.pdfDamghan University PressJournal of Holography Applications in Physics2783-47786120251227The EGUP-Induced Critical Radius: A New Holographic Scale for Quantum Gravity4159194910.22128/jhap.2025.2995.1124ENSara MotalebiDepartment of Physics, School of Sciences, Tarbiat Modares University, P.O.Box 14155-4838, Tehran, Iran0009-0006-6306-3115Journal Article20250718We present a unified framework incorporating both the Generalized and Extended Uncertainty Principles (GUP/EUP) in Anti-de Sitter space. This reveals a fundamental quantum gravity scale, the \textit{critical radius} $r_{\rm crit}=(\beta/\gamma)^{1/4}\sqrt{\ell_{P}L}$, which marks a phase transition where quantum gravitational ($\beta$) and AdS curvature ($\gamma$) effects equilibrate. At this scale, we demonstrate three interconnected phenomena: (i) a breakdown of the standard holographic duality, signaled by the exact vanishing of the boundary stress tensor $\langle T_{\mu\nu}\rangle=0$ under the self-duality condition $\partial_z g_{\mu\nu}|_{z=r_{\rm crit}}=0$; (ii) a topological transition manifested by the complexification of the central charge, $c_{\rm eff}=c\left(1+\frac{i}{2}\sqrt{\kappa}\ell_{P}^{2}\right)$ with $\kappa=(\beta/\gamma)^{1/4}\sqrt{\beta\gamma\ell_P/L}$; and (iii) a mechanism as a scenario for information paradox resolution, where information is recovered via topological storage in Chern-Simons states, modifying the Page curve with $\Delta S_{\rm recovery}>0$. These effects establish a consistency condition $L>\sqrt{\beta}\ell_{P}$ for a valid AdS/CFT correspondence and identify $r_{\rm crit}$ as the thermodynamic critical point where black holes transition to stringy remnants and information is topologically scrambled.https://jhap.du.ac.ir/article_1949_a5cfdd57fbedd8469d739b1807c7d077.pdfDamghan University PressJournal of Holography Applications in Physics2783-47786120251227Hawking-Page Transition from Logarithmic Entropy in f(R) Gravity6081195010.22128/jhap.2025.3077.1142ENSameer Ahmad MirDepartment of Physics, Jamia Millia Islamia, New Delhi, 110025, India; Department of Computer Sciences, Asian School of Business, Uttar Pradesh, 210303, India0000-0001-7528-1861Journal Article20250928We analyze the thermodynamics and phase structure of a static, spherically symmetric black hole that extends Schwarzschild within f(R) gravity. In the extended framework, we include a model-independent, one-loop-motivated logarithmic entropy correction with a free coefficient b. We derive closed-form expressions for temperature, enthalpy, corrected entropy, Gibbs free energy, and heat capacity to first order in the deformation parameter, and chart the Hawking-Page transition and local stability. A positive $b$ suppresses local stability for small black holes, while negative b enhances it. We also state the generalized first law with the f(R) coupling as a thermodynamic variable, providing a practical phenomenology for future microscopic determinations of b.https://jhap.du.ac.ir/article_1950_90c236e24f8ce610b8f4f804a34273a2.pdfDamghan University PressJournal of Holography Applications in Physics2783-47786120251227Holographic Dark Energy Models and Late Time Cosmic Acceleration in Light of Recent Observations8297195410.22128/jhap.2025.2988.1132ENSonali BorahDepartment of Physics, Assam University, Silchar-788011,Assam, IndiaJournal Article20250826Holographic dark energy(HDE) models, based on the holographic principle, offer a quantum gravity-inspired explanation for the universe's late-time acceleration. In HDE models, the vacuum energy density relates to an infrared (IR) cutoff, determined by horizon scales. In this study, we performed parameter estimation using the latest observational data, including Type Ia Supernovae, GRBs, and observed Hubble parameters across various holographic dark energy models. We employ the Markov Chain Monte Carlo (MCMC) method to evaluate the viability of these models. Our results show that holographic dark energy models are consistent with existing data and provide insights into the dynamic nature of dark energy. This research highlights the deep connection between cosmological observations and quantum gravity concepts to enhance our understanding of cosmic acceleration.https://jhap.du.ac.ir/article_1954_65b6eead17d6a65f86af162ec2f36af6.pdfDamghan University PressJournal of Holography Applications in Physics2783-47786120251227Holographic and Thermodynamic Topological Perspectives on AdS Einstein-Power-Yang-Mills Black Holes with Generalized Entropy98125199610.22128/jhap.2025.3126.1156ENN RamyaDepartment of Mathematics, Kongu Engineering College, Erode-638060, India0009-0005-1665-1996R TamilamuthanDepartment of Electrical and Electronics Engineering, Assistant Professor, PERI Institute Of Technology, Chennai-600048, IndiaHossein RashmanlouCanadian Quantum Research Center, 106-460 Doyle Ave, Kelowna, British Columbia V1Y 0C2 Canada0000-0001-8717-9530Farshid MofidnakhaeiDepartment of Physics, Sar. C., Islamic Azad University, Sari, Iran0000-0002-2903-0428Journal Article20251104In this work, we explore the holographic and thermodynamic topology of Anti–de Sitter (AdS) Einstein–Power–Yang–Mills (EPYM) black holes using both the bulk–boundary correspondence and the restricted phase space (RPS) frameworks. The study employs several non-extensive entropy models, including Barrow, R´enyi, Sharma–Mittal, Kaniadakis, and Tsallis–Cirto entropies. Within the bulk–boundary formalism, we find that the free deformation parameters strongly influence the classification of topological charges w. For the Barrow entropy, two distinct topological charges w = +1 and w = −1 appear as the deformation parameter increases, closely resembling the Bekenstein–Hawking limit. The R´enyi entropy exhibits a transition from three charges w = (+1, 0, −1) to a single charge w = +1 as the non-extensive parameter rises, while setting the deformation parameter to zero yields two symmetric charges w = ±1. In the Sharma–Mittal framework, three characteristic regions emerge: for higher parameter ratios, w = +1; for balanced ratios, w = 0; and for lower ratios, w = −1. The Kaniadakis entropy generally shows w = ±1 for most admissible K values, except at K = 0, where only w = +1 remains. The Tsallis–Cirto entropy displays two topological charges w = ±1 for small deformation parameters and a single charge w = +1 as the parameter approaches 0.9. Extending the analysis to the RPS framework reveals that, for R´enyi, Sharma–Mittal, and Tsallis–Cirto entropies, the topological charge remains invariant at w = +1, regardless of parameter variation. However, in the Barrow and Kaniadakis cases, the topological configuration evolves with increasing nonextensivity, leading to distinct topological transitions in w. These findings provide deeper insights into the holographic and thermodynamic structure of non-extensive AdS black holes and highlight their phase evolution under generalized entropy formulations. The present work differs by (i) an explicit bulk boundary holographic mapping that tracks how the EPYM power q modifies boundary central-charge and chemical potential variables, (ii) additional analytic expansions and parameter-range scans for q and entropy deformation parameters, and (iii) the introduction of supplementary stability diagnostics and response-function tests that probe the robustness of the topology classification.https://jhap.du.ac.ir/article_1996_5d6521d7377107f8bd2b2ac0f5bd7a89.pdfDamghan University PressJournal of Holography Applications in Physics2783-47786120251227Discussion on the Faizal–Krauss–Shabir–Marino Argument about the Theory of Everything126132200310.22128/jhap.2025.3160.1166ENAatif Kaisar KhanDepartment of Physics, University of Florida, Gainesville, FL 32611-8440, USAJournal Article20251121In this note I comment on the article ``Consequences of Undecidability in Physics on the Theory of Everything'' by Faizal-Krauss-Shabir-Marino (FKSM). I first summarise what I take to be the central claims and contributions of the work, and then highlight why it is, in my view, a genuinely important step in the dialogue between mathematical logic and fundamental physics. I finally suggest a clarification concerning the status of non-algorithmic understanding in their framework, in order to avoid any appearance of human-centrism, and point out that their picture naturally invites an interpretation in which a consciousness-like, non-algorithmic form of understanding operates in a Platonic realm that generates the informational ``bit'' and, through it, the physical ``it''.https://jhap.du.ac.ir/article_2003_4a6e2d7c53f9ac047f8512553d58aebd.pdf