13 citations · 53 across the 23 of their papers we have counts for
24 papers
Effects of Ill-Defined Domain of Definitions of the Parameter Operator on Berry Curvature and the Adiabatic Theorem
Georgios Konstantinou, Konstantinos Moulopoulos
We present a comprehensive analytical study that extends the conventional formulation of Berry curvature, highlighting its derivation in the context of problematic domains of defin…
Emergent non-Hermitian boundary contributions to charge pumping and electric polarization
K. Kyriakou, K. Moulopoulos
The phenomenon of charge pumping and the modern theory of electric polarization are reconsidered by analytically taking into account emergent non-Hermitian contributions. These are…
Orbital Magnetization in Solids: Boundary contributions as a non-Hermitian effect
K. Kyriakou, K. Moulopoulos
The theory of orbital magnetization is reconsidered by defining additional quantities that incorporate a non-Hermitian effect due to anomalous operators that break the domain of de…
Non-Hermiticities even in quantum systems that are closed
K. Moulopoulos
Rarely noted paradoxes and their resolution lead to non-Hermitian behaviors due to boundary terms, even for closed systems and with real potentials. The role played by these non-He…
Topological anomalies in the off-diagonal Ehrenfest theorem and their role on optical transitions in solar cells
Georgios Konstantinou, Konstantinos Moulopoulos
We analytically demonstrate the emergence of surface non-Hermitian boundary contributions that appear in an extended form of the quantum Ehrenfest theorem and are crucial (although…
Strong Electric Field in 2D Graphene: The Integer Quantum Hall regime from a different (many-body) perspective
Georgios Konstantinou, Konstantinos Moulopoulos
We investigate the emerging consequences of an applied strong in-plane electric field on a macroscopically large graphene sheet subjected to a perpendicular magnetic field, by dete…