103 citations · 272 across the 6 of their papers we have counts for
6 papers
Dynamics of Coherent States in Regular and Chaotic Regimes of the Non-integrable Dicke Model
S. Lerma-Hernández, J. Chávez-Carlos, M. A. Bastarrachea-Magnani +2
The quantum dynamics of initial coherent states is studied in the Dicke model and correlated with the dynamics, regular or chaotic, of their classical limit. Analytical expressions…
Approximated integrability of the Dicke model
A. Relaño, M. A. Bastarrachea-Magnani, S. Lerma-Hernández
A very approximate second integral of motion of the Dicke model is identified within a broad region above the ground state, and for a wide range of values of the external parameter…
Delocalization and quantum chaos in atom-field systems
M. A. Bastarrachea-Magnani, B. López-del-Carpio, J. Chávez-Carlos +2
Employing efficient diagonalization techniques, we perform a detailed quantitative study of the regular and chaotic regions in phase space in the simplest non-integrable atom-field…
Comparative quantum and semi-classical analysis of Atom-Field Systems II: Chaos and regularity
M. A. Bastarrachea-Magnani, S. Lerma-Hernandez, J. G. Hirsch
The non-integrable Dicke model and its integrable approximation, the Tavis-Cummings (TC) model, are studied as functions of both the coupling constant and the excitation energy. Th…
Comparative quantum and semi-classical analysis of Atom-Field Systems I: density of states and excited-state quantum phase transitions
M. A. Bastarrachea-Magnani, S. Lerma-Hernandez, J. G. Hirsch
We study the non-integrable Dicke model, and its integrable approximation, the Tavis-Cummings model, as functions of both the coupling constant and the excitation energy. Excited-s…
Glueball Spectrum from an Effective Hamiltonian
P. O. Hess, A. Weber, C. R. Stephens +2
Using simple and general arguments we propose an effective Hamiltonian for the description of low-energy pure QCD. The Hamiltonian is a function of spatially constant collective mo…