38 citations · 92 across the 11 of their papers we have counts for
11 papers
Non-hermitian models in higher dimensions
Pulak Ranjan Giri
It is know that PT-symmetric models have real spectra provided the symmetry is not spontaneously broken. Even pseudo-hermitian models have real spectra, which enlarge the the class…
Hydrino like states in graphene and Aharonov-Bohm field
Pulak Ranjan Giri
We study the dynamics of fermions on graphene in presence of Coulomb impurities and Aharonov-Bohm field. Special emphasis is given to the formation of hydrino like states and its l…
Localization at threshold in noncommutative space
Pulak Ranjan Giri
The ground state energy of a scale symmetric system usually does not possess any lower bound, thus making the system quantum mechanically unstable. Self-adjointness and renormaliza…
Quantization of neutron in Earth's gravity
Pulak Ranjan Giri
Gravity is the weakest of all four known forces in the universe. Quantum states of an elementary particle due to such a weak field is certainly very shallow and would therefore be…
Inequivalent quantization in the field of a ferromagnetic wire
Pulak Ranjan Giri
We argue that it is possible to bind neutral atom (NA) to the ferromagnetic wire (FW) by inequivalent quantization of the Hamiltonian. We follow the well known von Neumann's method…
Lower bound of minimal time evolution in quantum mechanics
Pulak Ranjan Giri
We show that the total time of evolution from the initial quantum state to final quantum state and then back to the initial state, i.e., making a round trip along the great circle…