83 citations · 291 across the 20 of their papers we have counts for
21 papers
Brane effective actions and their island rule from flows
Nele Callebaut, Matteo Selle
We derive a effective action for semi-classical AdS gravity with an EOW brane of arbitrary tension by solving the radial Hamiltonian flow in a derivative expansion. Interp…
Introduction to holography
Nele Callebaut
These are course notes for the 'Introduction to holography' Master level course at University of Cologne. The goal of the course is to give a pedogogical introduction to holography…
Deforming and dissecting AdS with matter
Nele Callebaut, Blanca Hergueta, Ruben Monten +1
We study deformations of the model by Henneaux, Martínez, Troncoso and Zanelli [arXiv:hep-th/0201170] which features asymptotically AdS black hole solutions that incorporate th…
Setting free for braneworld holography
Nele Callebaut, Matteo Selle
We identify what has been referred to as 'cut-off CFT' in holographic braneworld with or theory (depending on the dimension of the bulk), so that the holographic du…
Radial canonical gravity
Nele Callebaut, Blanca Hergueta
We apply an ADM deparametrization strategy to radial canonical gravity in three dimensions. It gives rise to a concise notation for previous holographic interpretations in t…
The chiral SYK model in three-dimensional holography
Alexander Altland, Dmitry Bagrets, Nele Callebaut +1
A celebrated realization of the holographic principle posits an approximate duality between the -dimensional quantum mechanical SYK model and two-dimensional Jackiw-Teitelbo…
Radial canonical AdS gravity and
Matthew J. Blacker, Nele Callebaut, Blanca Hergueta +1
We employ an ADM deparametrization strategy to discuss the radial canonical formalism of asymptotically AdS gravity. It leads to the identification of a radial 'time' before qu…
Entanglement in conformal field theory and holography
Nele Callebaut
In these notes we give a pedagogical account of the replica trick derivation of CFT entanglement and its holographic counterpart, i.e. the Lewkowycz Maldacena derivation of the Ryu…
Reconstructing bulk equation of motion using CFT modular Hamiltonians
Nele Callebaut, Gilad Lifschytz
In the framework of bulk reconstruction, we elucidate the relationship between the action of CFT modular Hamiltonians on bulk operators, the possible equation of motion for the bul…
Electro-Magnetic Energy Extraction from Rotating Black Holes in AdS
Nele Callebaut, Maria J. Rodriguez, Herman Verlinde
Force-Free Electrodynamics for black holes in Anti de Sitter is considered. We present new, energy extracting solutions of Force-Free Electrodynamics in Anti de Sitter - Near Horiz…
deformed CFT as a non-critical string
Nele Callebaut, Jorrit Kruthoff, Herman Verlinde
We present a new exact treatment of deformed 2D CFT in terms of the worldsheet theory of a non-critical string. The transverse dimensions of the non-critical string are…
Entanglement Dynamics in 2D CFT with Boundary: Entropic origin of JT gravity and Schwarzian QM
Nele Callebaut, Herman Verlinde
We study the dynamics of the geometric entanglement entropy of a 2D CFT in the presence of a boundary. We show that this dynamics is governed by local equations of motion, that tak…
The gravitational dynamics of kinematic space
Nele Callebaut
We show that the dynamics of the kinematic space of a 2-dimensional CFT is gravitational and described by Jackiw-Teitelboim theory. We discuss the first law of this 2-dimensional d…
Equivalence of Emergent de Sitter Spaces from Conformal Field Theory
Curtis T. Asplund, Nele Callebaut, Claire Zukowski
Recently, two groups have made distinct proposals for a de Sitter space that is emergent from conformal field theory (CFT). The first proposal is that, for two-dimensional holograp…
Segmented Strings in
Nele Callebaut, Steven S. Gubser, Andreas Samberg +1
We study segmented strings in flat space and in . In flat space, these well known classical motions describe strings which at any instant of time are piecewise linear. In $A…
Background field and time dependence effects in holographic models
Nele Callebaut
This thesis deals with applications of holographic dualities to the study of background field and time dependence effects in strongly coupled field theories. The first chapters (2-…
Holographic Quenches and Fermionic Spectral Functions
N. Callebaut, B. Craps, F. Galli +4
Using holographic methods we investigate the behaviour of fermionic spectral functions of strongly coupled 2+1 dimensional field theories as both temperature and chemical potential…
A magnetic instability of the non-Abelian Sakai-Sugimoto model
Nele Callebaut, David Dudal
In this follow-up paper of 1105.2217 we further discuss the occurrence of a magnetically induced tachyonic instability of the rho meson in the two-flavour Sakai-Sugimoto model, upl…
On the transition temperature(s) of magnetized two-flavour holographic QCD
N. Callebaut, D. Dudal
During heavy ion collisions, high temperatures and strong magnetic fields are generated. We employ the gauge-gravity duality to study the N_f=2 QCD phase diagram under these extrem…
Holographic rho mesons in an external magnetic field
N. Callebaut, D. Dudal, H. Verschelde
We study the rho meson in a uniform magnetic field eB using a holographic QCD-model, more specifically a D4/D8/Dbar8 brane setup in the confinement phase at zero temperature with t…
Holographic study of rho meson mass in an external magnetic field: paving the road towards a magnetically induced superconducting QCD vacuum?
Nele Callebaut, David Dudal, Henri Verschelde
We study the rho meson mass in a uniform background magnetic field eB at zero temperature, in search of indications for the magnetically induced rho meson condensation, as predicte…