Diego Barberena

collaborators

2 papers

quant-ph2025

Generalized Holstein-Primakoff mapping and $1/ N$ expansion of collective spin systems undergoing single particle dissipation

Diego Barberena

We develop a generalization of the Schwinger boson and Holstein-Primakoff transformations that is applicable to ensembles of $N$ spin $1/2$ 's with weak permutational symmetry. Thes…

hep-th2025

Large N vector models in the Hamiltonian framework

Diego Barberena

We present a fluctuating $N$ formalism, based on second-quantization, to describe large $N$ vector models from field theory using Hamiltonian methods. We first present the method i…

Generalized Holstein-Primakoff mapping and 1/N expansion of collective spin systems undergoing single particle dissipation

Large N vector models in the Hamiltonian framework

Generalized Holstein-Primakoff mapping and $1/ N$ expansion of collective spin systems undergoing single particle dissipation