17 citations · 35 across the 6 of their papers we have counts for
6 papers
Swanson Hamiltonian: non-PT-symmetry phase
V. Fernández, R. Ramírez, M. Reboiro
In this work, we study the non-hermitian Swanson hamiltonian, particularly the non-PT symmetry phase. We use the formalism of Gel'fand triplet to construct the generalized eigenfun…
Excepional Points from Hamiltonians of hybrid physical systems: Squeezing and anti-Squeezing
Romina Ramirez, Marta Reboiro, Diego Tielas
We study the appearance of Exceptional Points in a hybrid system composed of a superconducting flux-qubit and an ensemble of nitrogen-vacancy colour centres in diamond. We discuss…
Optimal Spin Squeezed Steady State induced by the dynamics of non-hermtian hamiltonians
R. Ramirez, M. Reboiro
In this work, we study the time evolution of a coherent spin state under the action of a non-hermitian hamiltonian. The hamiltonian is modeled by a one-axis twisting term plus a Li…
Dynamics of finite dimensional non-hermitian systems with indefinite metric
R. Ramirez, M. Reboiro
We discuss the time evolution of physical finite dimensional systems which are modelled by non-hermitian Hamiltonians. We address both general non-hermitian Hamiltonians and pseudo…
Q-boson coherent states and para-Grassmann variables for multi-particle states
Romina A. Ramirez, Gerardo L. Rossini, Daniel C. Cabra +1
We describe coherent states and associated generalized Grassmann variables for a system of independent -boson modes. A resolution of unity in terms of generalized Berezin in…
About composition of Toeplitz operators in Segal-Bargmann Space
Romina Ramirez, Marcela Sanmartino
Some positive results about the composition of Toeplitz operators on the Segal-Bargmann space are presented. A Wick symbol where it is not possible to construct its associated Toep…