3 papers
quant-ph2025
Exact dynamics and qubit inversion of non-Hermitian driven two-level systems
Ivan A. Bocanegra-Garay, Luis M. Nieto
The supersymmetric structure of a generalized non-Hermitian driven two-level system is demonstrated. A unitary rotation turns the Hamiltonian into a more convenient form. After dec…
physics.bio-ph2025
Low-Energy DNA Bubble Dynamics via the Quantum Coulomb Potential
Juan D. García-Muñoz, A. Contreras-Astorga, L. M. Nieto
We developed a low-energy model that can be used at any time to describe the dynamics of DNA bubbles at temperatures below the melting point. The Schrödinger equation associated wi…
quant-ph2025
Exact Floquet solutions in a Parity-Time-Symmetric Rabi Model
M. Baradaran, D. Braak, L. M. Nieto +1
It is shown that a semiclassical Rabi model with parity-time (PT) symmetry has a hidden symmetry and hence possesses quasi-exact solutions. These are located precisely at t…