Traversability of quantum improved wormhole solution

Moti, R.; Shojai, A.

doi:10.48550/arxiv.2006.06190

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…The effects of closed Universes that branch off or join onto an asymptotically AdS spacetime by means of an effective quantum field theory in an AdS background were studied in [40]. The problem of reversibility of wormholes in the framework of quantum improvement of gravity theory was investigated in [41].…”

Section: Introductionmentioning

confidence: 99%

Formation of Bound States of scalar fields in AdS-asymptotic Wormholes

Chatzifotis,

Koutsoumbas,

Papantonopoulos

2020

Preprint

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We use the WKB approximation to study the formation and propagation of quantum bound states in the vicinity of a wormhole in the non-minimal derivative coupling theory of gravity. The wormhole throat connects two Anti-de Sitter spacetimes. We show that when the scalar field lies in high orbital states, the corresponding potential has potential barriers that block the passage of a classical field. We investigate the behaviour of the bound states trapped in the potential wells and provide the probability density flow between the two AdS regions.

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Section: Introductionmentioning

confidence: 99%

Formation of Bound States of scalar fields in AdS-asymptotic Wormholes

Chatzifotis,

Koutsoumbas,

Papantonopoulos

2020

Preprint

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“…Ironically,[81] relies on asymptotic stability of quantum gravity to "help". Of course[82,83] do not require it.…”

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confidence: 99%

Circular Arguments in String and Superstring Theory from a Multi-fold Universe Perspective

Maes¹

2022

Preprint

105

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Following our derivation of multi-fold models, we revisited the main aspects and claims of self-consistencies of strings and superstrings. Rather than focusing on their relationship to multi-fold universes, we used our lessons learned to show how many claims or results rely on circular arguments coming from the resonance dual model: many consistent results are derived from this model rather than proofs of self-consistency. The previously shown incompatibility between the standard model and superstrings if quantum gravity is asymptotically stable remains standing post analysis of superstrings self-consistency claims. Its applicability to the real universe repositions the role of superstrings and its derived conjectures and models. No matter what, it demonstrates that claims of self-consistency are not validation of the theory as model of the real universe: experimental validations or invalidations are required, as many have argued before.

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“…• Recent work [46] suggests that in the presence of ER=EPR, reasonable traversability may be possible without exotic matter [13]. [47,48] provide a possible way to ensure that traversability of wormholes in GR governed AdS(5) can be achieved with couplings of their Left and Right boundaries; which is exactly what happens when they are entangled… If any of these were the case:…”

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confidence: 99%

The Replica Trick, Wormholes, Island formula, and Quantum Extremal Surfaces, and How the AdS/CFT Correspondence Conjecture, and Hence the M-theory, Encounters Multi-folds

Maes

2023

Preprint

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The multi-fold theory factually encounters the AdS/CFT correspondence conjecture: the AdS(5) space is tangent dual to the multi-fold spacetime. On the other hand, while the derivation of the conventional conjecture involved branes in AdS(5) (+ …), which amounts to physical dual tangency, and key derivations like the Ryu–Takayanagi conjecture, are based on the same model, the conventional AdS/CFT correspondence conjecture can also be understood as a mathematical duality, where the CFT spacetime is not necessarily physically tangent to AdS(5) (+…). It can be justified as a particular case of the holographic principle. Therefore, the paper will revisit, and derive the holographic principle, in a multi-fold universe. As General relativity (GR) encounters multi-folds at Planck scales, the proof applies to GR-based universes. We also debunk the use of Wheeler’s bag of gold as a counter example to the holographic principle.Trying to resolve the black hole information paradox, different teams have been able to recover the black hole Page curve, by relying on the replica trick with generalized semi-classical gravitational path integrals, in asymptotic AdS, with arbitrary topologies, including spacetime (Euclidian) wormholes in between replicas, to justifies paths in between the replicas. The approach also relies on the island formula for the von Neuman entropy as fine-grained entropy. One knows that the Page curve had to be recovered one way or another as with the AdS/CFT correspondence conjecture, the unitarity of CFTs implies unitarity of gravity. The results, have also been extended to de Sitter asymptotic spacetime. The quantum extremal surface that appears in the process, bounding the island, leads to proposed physical interpretations of a black hole interior, that, in our opinion lead to more confusions than answers. In the multi-fold theory, we have already encountered an equivalent surface, with a much cleaner microscopic interpretation. For this paper, all what matters is that the microscopic interpretation validates the approach of replica tick, wormholes and island. But on the way, the paper discusses the differences between the multi-fold model and the conventional interpretation. A few recent papers reused the approach to study two entangled gravitating universes, with one possibly without gravity. Admittedly, speaking of different universes is a bit of an oxymoron, as a universe embodies everything that is physical. Also, what is between universes, whatever that means, seems even more a red herring, unless if they were to share, or be a (global) embedding or dual tangent space that is physical. Phrased this way, the holographic AdS/CFT correspondence conjecture would be a particular case. The papers also rely on the replica trick, and its wormholes, adding some replica and wormholes swapping entangled universe parts. They recovers sensible, and unitary behaviors as well as the ER = EPR conjecture. This paper provides multi-fold inspired interpretations of the quantum extremal surfaces appearing among the disjoint universes.Interpreting the replica trick, and its wormholes, in both the cases of black holes and entangled disjoint universes, one can see that the role played by the wormholes between different replicas amounts to the multi-fold mechanisms.. This is further reinforced by considerations on global symmetry in the presence of gravity or wormholes. The islands associated to the different entangled universe use cases also imply that, in universes with gravity, entanglement implies gravity effects, which is also known as the E/G conjecture, factual in multi-fold theory. With the (disjoint) AdS/CFT conjecture, this means that it, and therefore the M-theory encounters multi-folds. The multi-fold theory could have predicted such an outcome from the link between the Hilbert Einstein action and superstring action, and the fact that we already had GR encounter multi-folds at Planck scales.

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Traversability of quantum improved wormhole solution

Cited by 4 publications

References 19 publications

Formation of Bound States of scalar fields in AdS-asymptotic Wormholes

Formation of Bound States of scalar fields in AdS-asymptotic Wormholes

Circular Arguments in String and Superstring Theory from a Multi-fold Universe Perspective

The Replica Trick, Wormholes, Island formula, and Quantum Extremal Surfaces, and How the AdS/CFT Correspondence Conjecture, and Hence the M-theory, Encounters Multi-folds

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