activity
19962026
most citedPartial Densities of States, Scattering Matrices, and Green's Functions

168 citations · 517 across the 30 of their papers we have counts for

collaborators

30 papers

cond-mat.mes-hall2026

Scattering matrix elements and energy spectrum of one-dimensional hybrid PT-symmetric finite systems

Vladimir Gasparian, Esther Jódar, Antonio Pérez-Garrido

In this work, we provide a complete description of the scattering matrix elements and electron energy spectrum in one dimensional PT-symmetric hybrid finite systems, using the char…

cond-mat.mes-hall2025

Characteristic determinant approach to the spectrum of one-dimensional -symmetric systems

Vladimir Gasparian, Peng Guo, Antonio Pérez Garrido +1

We obtain a closed form expression for the energy spectrum of -symmetric superlattice systems with complex potentials of periodic sets of two -potentials…

cond-mat.other2024★ 5 cited

Tunneling time in coupled-channel systems

Peng Guo, Vladimir Gasparian, Antonio Pérez-Garrido +1

In present work, we present a couple-channel formalism for the description of tunneling time of a quantum particle through a composite compound with multiple energy levels or a com…

cond-mat.other2023

Tunneling time and Faraday/Kerr effects in -symmetric systems

Vladimir Gasparian, Peng Guo, Antonio Pérez-Garrido +1

We review the generalization of tunneling time and anomalous behaviour of Faraday and Kerr rotation angles in parity and time ()-symmetric systems. Similari…

hep-lat2023

Toward extracting scattering phase shift from integrated correlation function

Peng Guo, Vladimir Gasparian

In present work, a relation that connects the integrated correlation function of a trapped two-particle system to infinite volume particles scattering phase shift is derived. It ha…

physics.optics2023★ 6 cited

Polar magneto-optic Kerr and Faraday effects in finite periodic \texorpdfstring{}{PT}-symmetric systems

Antonio Perez-Garrido, Peng Guo, Vladimir Gasparian +1

We discuss the anomalous behavior of the Faraday (transmission) and polar Kerr (reflection) rotation angles of the propagating light, in finite periodic parity-time ($\mathcal{P}\m…