183 citations · 1.9k across the 93 of their papers we have counts for
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Mean field description of the Dicke Model
Jorge G. Hirsch, Octavio Castanos, Ramon Lopez-Pena +1
A mean field description of the Dicke model is presented, employing the Holstein-Primakoff realization of the angular momentum algebra. It is shown that, in the thermodynamic limit…
Deformation and shell effects in nuclear mass formulas
Cesar Barbero, Jorge G. Hirsch, Alejandro Mariano
We analyze the ability of the three different Liquid Drop Mass (LDM) formulas to describe nuclear masses for nuclei in various deformation regions. Separating the 2149 measured nuc…
Nuclear masses, deformations and shell effects
Jorge G. Hirsch, Cesar Barbero, Alejandro E. Mariano
We show that the Liquid Drop Model is best suited to describe the masses of prolate deformed nuclei than of spherical nuclei. To this end three Liquid Drop Mass formulas are employ…
Single Molecule Magnets and the Lipkin-Meshkov-Glick model
Jorge A. Campos, Jorge G. Hirsch
We discuss the description of quantum magnetization in the super paramagnetic compound Fe using a generalization of the Lipkin-Meshkov-Glick Hamiltonian. We study the variation…
Numerical solutions of the Dicke Hamiltonian
Miguel A. Bastarrachea-Magnani, Jorge G. Hirsch
We study the numerical solutions of the Dicke Hamiltonian, which describes a system of many two level atoms interacting with a monochromatic radiation field into a cavity. The Dick…
No singularities at the phase transition in the Dicke model
O. Casta~nos, E. Nahmad-Achar, R. Lopez-Peña +1
The Dicke Hamiltonian describes the simplest quantum system with atoms interacting with photons: N two level atoms inside a perfectly reflecting cavity which allows only one electr…