We analyse several non-Hermitian Hamiltonians with antiunitary symmetry from the point of view of their point-group symmetry. It enables us to predict the degeneracy of the energy levels and to reduce the dimension of the ...

We discuss three Hamiltonians, each with a central-field part H0 and a PT-symmetric perturbation igz. When H0 is the isotropic Harmonic oscillator the spectrum is real for all g because H is isospectral to H0+g2/2. When ...

We discuss a parity-time (PT) symmetric Hamiltonian with complex eigenvalues. It is based on the dimensionless Schrödinger equation for a particle in a square box with the PT-symmetric potential V(x, y) = iaxy. Perturbation ...

Li and Miao [Phys. Rev. A 85, 042110 (2012)PLRAAN1050-294710.1103/PhysRevA.85.042110] proposed a non-Hermitian Hamiltonian that is neither Hermitian nor PT symmetric but exhibits real eigenvalues for some values of the ...

In this work, we investigated, through a combination of analytical and first principles methods, the electronic properties of bidimensional metal-organic frameworks (MOFs) and covalent-organic frameworks (COFs). Firstly, ...

El momento magnético anómalo del muón es una cantidad que ha sido medida con alta precisión que depende de parámetros fundamentales de la Física de partículas que permiten poner a prueba la exactitud del Modelo Estándar ...