61 citations · 115 across the 6 of their papers we have counts for
6 papers
Dynamic Generation of Light States with Discrete Symmetries
S. Cordero, E. Nahmad-Achar, O. Castaños +1
A dynamic procedure is established within the generalised Tavis-Cummings model to generate light states with discrete point symmetries, given by the cyclic group . We c…
Mirror symmetry in the energy spectra of -level systems
S. Cordero, O. Castaños, R. López--Peña +1
The energy spectrum of a system of atoms of levels interacting with a one-mode electromagnetic field is studied in the dipole and rotating wave approximations. We find th…
A semi-classical versus quantum description of the ground state of three-level atoms interacting with a one-mode electromagnetic field
S. Cordero, O. Castaños, R. López-Peña +1
We consider three-level atoms (or systems) interacting with a one-mode electromagnetic field in the dipolar and rotating wave approximations. The order of the quantum phase t…
Phase transitions with finite atom number in the Dicke Model
J. G. Hirsch, O. Castaños, E. Nahmad-Achar +1
Two-level atoms interacting with a one mode cavity field at zero temperature have order parameters which reflect the presence of a quantum phase transition at a critical value of t…
On the Superradiant Phase in Field-Matter Interactions
O. Castaños, E. Nahmad-Achar, R. López-Peña +1
We show that semi-classical states adapted to the symmetry of the Hamiltonian are an excellent approximation to the exact quantum solution of the ground and first excited states of…
Noether's Theorem and time-dependent quantum invariants
O. Castaños, R. López-Peña, V. I. Man'ko
The time dependent-integrals of motion, linear in position and momentum operators, of a quantum system are extracted from Noether's theorem prescription by means of special time-de…