3 papers
hep-th2026
The two-dimensional disordered sigma model
Martí 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…
hep-th2025
Chiral symmetry breaking and restoration by helical magnetic fields in AdS/CFT
Martí 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…
hep-th2025
Hot wormholes and chaos dynamics in a two-coupled SYK model
Martí 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…