56 citations · 71 across the 7 of their papers we have counts for
7 papers
Pseudo-Hermitian systems with PT-symmetry: Degeneracy and Krein space
B. Choutri, O. Cherbal, F. Z. Ighezou +1
We show in the present paper that pseudo-Hermitian Hamiltonian systems with even PT-symmetry admit a degeneracy structure. This kind of degeneracy is expected traditionally in the…
Pseudo-Hermitian systems, involutive symmetries and pseudofermions
O. Cherbal, D. Trifonov, M. Zenad
We have briefly analyzed the existence of the pseudofermionic structure of multilevel pseudo-Hermitian systems with odd time-reversal and higher order involutive symmetries. We hav…
Supersymmetric Extension of Non-Hermitian su(2) Hamiltonian and Supercoherent States
Omar Cherbal, Mahrez Drir, Mustapha Maamache +1
A new class of non-Hermitian Hamiltonians with real spectrum, which are written as a real linear combination of su(2) generators in the form , , i…
Fermion Coherence Hamiltonians
O. Cherbal, M. Drir, M. Maamache +1
We have established that the most general form of Hamiltonian that preserves fermionic coherent states stable in time, is that of the nonstationary free fermionic oscillator. This…
Invariants and coherent states for a nonstationary fermionic forced oscillator
O. Cherbal, M. Drir, M. Maamache +1
Invariant creation and annihilation operators and related Fock states and coherent states are built up for the system of nonstationary fermionic forced oscillator.
Invariants and Coherent States for Nonstationary Fermionic Forced Oscillator
O. Cherbal, M. Drir, M. Maamache +1
The most general form of Hamiltonian that preserves fermionic coherent states stable in time is found in the form of nonstationary fermion oscillator. Invariant creation and annihi…