7 papers
Size Operator and Spectral Clustering in the Two Coupled SYK Model
Juan Santos-Suárez, Juan Santos-Suárez, Martà Berenguer +3
At large , two coupled Sachdev-Ye-Kitaev models realize an eternal traversable wormhole with a discrete spectrum. We show that at finite the spectrum organizes into clusters…
The two-dimensional disordered sigma model
Martà Berenguer, Felix M. Haehl, Elisa Tabor
We introduce a two-dimensional nonlinear sigma model with random Gaussian -body interactions. The model combines the structure of a two-dimensional bosonic SYK-type quant…
Confinement and chiral symmetry breaking in holography: a smooth switch-off
Martà Berenguer, Johanna Erdmenger, Nick Evans +2
We revisit the holographic description of the thermal first order phase transition of N=4 SYM compactified on a spatial circle. At the transition, the dominant bulk saddle exchange…
Holographic Floquet states in low dimensions (II)
Martà Berenguer, Ana Garbayo, Javier Mas +1
We continue the study in [1] of a strongly coupled (2+1)-dimensional gauge theory subject to an external rotating electric field. The system is modelled holographically as a D3/D5…
Chiral symmetry breaking and restoration by helical magnetic fields in AdS/CFT
Martà Berenguer, Javier Mas, Masataka Matsumoto +2
We study the effects of helical magnetic fields on chiral symmetry breaking within the AdS/QCD framework using the D3/D7-brane model. By analyzing the brane embeddings, we obtain t…
Hot wormholes and chaos dynamics in a two-coupled SYK model
Martà Berenguer, Javier Mas, Juan Santos-Suárez +1
We study the dynamics of chaos across the phase transition in a 2-coupled Sachdev-Ye-Kitaev (SYK) model, with a focus on the unstable "hot wormhole" phase. Using the Schwinger-Keld…