49 citations · 104 across the 9 of their papers we have counts for
11 papers · 1 filter
Before the Bang: Wormholes at the Dawn of the Universe
Panos Betzios, Paul Ghiringhelli, Ioannis D. Gialamas +1
This essay discusses recent progress on Euclidean wormholes as candidate contributions to the Universe's initial quantum state. The comparison with the Hartle-Hawking no-boundary p…
A Menagerie of Wormholes and Cosmologies in the Gravitational Path Integral
Panos Betzios, Paul Ghiringhelli, Ioannis D. Gialamas +1
We analyse a variety of Euclidean saddles in the gravitational path integral, with asymptotic AdS boundary conditions, in a class of Einstein-Scalar-Maxwell models. These include s…
Bubbling wormholes and matrix models
Panos Betzios, Ji Hoon Lee, Olga Papadoulaki +1
The thermofield double state entangles two copies of a CFT via a sum over energy eigenstates and is dual to the two-sided eternal black hole. We explore an analogous construction u…
Factorizations of 3d Interval Partition Functions
Boan Zhao, Panos Betzios, Paul Luis Roehl
We show that interval partition functions (transition amplitudes) of three- dimensional theories admit factorizations into sums of products of hemisphere partitio…
A microscopic Normal Matrix Model for
Panos Betzios
We describe the duality between the gravitating (compact) Sine-Gordon model and a normal matrix model. From a two-dimensional quantum gravity perspective and due to the perio…
Magnetic Anti-de Sitter Wormholes as seeds for Higgs Inflation
Panos Betzios, Ioannis D. Gialamas, Olga Papadoulaki
We show how certain types of magnetic asymptotically Anti-de Sitter Euclidean wormholes can catalyze the onset of inflation. These wormholes can be embedded as saddle point solutio…
An inflationary cosmology from anti-de Sitter wormholes
Panos Betzios, Olga Papadoulaki
We propose a new type of wavefunction for the universe computed from the Euclidean path integral, with asymptotically boundary conditions. In the semiclassical limit, it desc…
Baby Universes born from the Void
Panos Betzios, Nava Gaddam, Olga Papadoulaki
We propose a novel construction of a third quantised baby universe Hilbert space for the quantum gravity path integral. In contrast to the original description o…
Interacting systems and wormholes
Panos Betzios, Elias Kiritsis, Olga Papadoulaki
We consider a class of tripartite systems for which two -dimensional QFTs are cross-coupled via a third -dimensional "messenger" QFT. We analyse in detail the example of a…
Emergent gravity from hidden sectors and TT deformations
Panos Betzios, Elias Kiritsis, Vasilis Niarchos
We investigate emergent gravity extending the paradigm of the AdS/CFT correspondence. The emergent graviton is associated to the (dynamical) expectation value of the energy-momentu…
Euclidean Wormholes and Holography
Panos Betzios, Elias Kiritsis, Olga Papadoulaki
Asymptotically AdS wormhole solutions are considered in the context of holography. Correlation functions of local operators on distinct boundaries are studied. It is found that suc…