3 papers
quant-ph2026
Two flavor neutrino oscillations in presence of non-Hermitian dynamics
Kritika Rushiya, Gaurav Hajong, Bhabani Prasad Mandal +1
We develop a consistent mathematical framework for studying two flavor neutrino oscillations in presence of non-Hermitian dynamics. We consider two approaches : (a) bi-orthonormal…
quant-ph2026
Emergence of Hermitian topology from non-Hermitian knots
Gaurav Hajong, Ranjan Modak, Bhabani Prasad Mandal
The non-Hermiticity of the system gives rise to a distinct knot topology in the complex eigenvalue spectrum, which has no counterpart in Hermitian systems. In contrast, the singula…
quant-ph2025
Modified Hellmann Feynman Theorem
Gaurav Hajong, Bhabani Prasad Mandal
We review the well-known Hellmann Feynman Theorem (HFT), originally developed for Hermitian systems to facilitate the calculation of forces among the molecules. Our work extends th…