Ginzburg-Landau theory for the Jaynes-Cummings-Hubbard model
Ginzburg-Landau theory for the Jaynes-Cummings-Hubbard model
We develop a Ginzburg-Landau theory for the Jaynes-Cummings-Hubbard model which effectively describes both static and dynamic properties of photons evolving in a cubic lattice of cavities, each filled with a two-level atom. To this end we calculate the effective action to first order in the hopping parameter. Within a Landau …