8 papers
QFT as a set of ODEs
Manuel Loparco, Grégoire Mathys, Joao Penedones +2
Correlation functions of local operators in Quantum Field Theory (QFT) on hyperbolic space can be fully characterized by the set of QFT data $\lbrace Î_i,C_{ijk},b^{\hat{\mathcal{…
Effective strings and particles interacting in 3D: the Ising model
J. M. Viana Parente Lopes, José Matos, Joao Penedones
We study how a fluctuating domain wall in three dimensions modifies bulk observables in a gapped phase. We introduce an effective interaction between the wall and the lightest bulk…
Locality constraints in AdS without parity
Manuel Loparco, Grégoire Mathys, João Penedones +2
We study bulk locality constraints in quantum field theories in AdS. The known derivation of locality sum rules in AdS does not apply for due to the different sin…
What is a photon in de Sitter spacetime?
Manuel Loparco, Joao Penedones, Yannis Ulrich
The states of a single photon in four-dimensional de Sitter (dS) spacetime form a Unitary Irreducible Representation (UIR) of SO(1,4), which we call the photon UIR. While in flat s…
Effective string theory on a torus: the 3d Ising domain wall
David Lima, J. M. Viana Parente Lopes, Jose Matos +1
We use effective string theory (EST) to describe a toroidal 2d domain wall embedded in a 3d torus. In particular, we compute the free energy of the domain wall in an expansion in i…
Einstein gravity from a matrix integral -- Part II
Shota Komatsu, Adrien Martina, Joao Penedones +2
Using supersymmetric localization, we compute the partition function and some protected correlators of the polarized IKKT matrix model. Surprisingly, we find that the original IKKT…