175 citations · 252 across the 9 of their papers we have counts for
5 papers · 1 filter
On the relation between Euclidean and Lorentzian 2D quantum gravity
J. Ambjorn, J. Correia, C. Kristjansen +1
Starting from 2D Euclidean quantum gravity, we show that one recovers 2D Lorentzian quantum gravity by removing all baby universes. Using a peeling procedure to decompose the discr…
On QCD_2 from supergravity and mass gaps in QCD
Joao Correia, Troels Harmark
As a test of the conjectured QCD/supergravity duality, we consider mass gaps in the supergravity construction of QCD_2. We find a mass gap in the dual field theory both when using…
A Note on the Barrier in Liouville Theory
João D. Correia
The instability of Liouville theory coupled to matter fields is shown to persist even when the ``spikes'' which represent highly singular geometries are allowed to interact i…
The Spectral Dimension of Non-generic Branched Polymer Ensembles
Joao D. Correia, John F. Wheater
We show that the spectral dimension on non-generic branched polymer models with susceptibility exponent is given by . For those models with negative we find that t…
A simple model of dimensional collapse
J. D. Correia, J. F. Wheater
We consider a simple model of d families of scalar field interacting with geometry in two dimensions. The geometry is locally flat and has only global degrees of freedom. When d<0…