807 citations · 1.4k across the 42 of their papers we have counts for
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Observations on spacetime symmetry and non-commutativity
Pulak Ranjan Giri, T. Shreecharan
We consider both the co-ordinates and momenta to be non-commutative and define a non-commutative version of Lorentz symmetry which has a smooth limit to the standard Lorentz symmet…
Non-commutativity as a measure of inequivalent quantization
Pulak Ranjan Giri
We show that the strength of non-commutativity could play a role in determining the boundary condition of a physical problem. As a toy model we consider the inverse square problem…
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…
Normal mode analysis for scalar fields in BTZ black hole background
Sayan K Chakrabarti, Pulak Ranjan Giri, Kumar S. Gupta
We analyze the possibility of inequivalent boundary conditions for a scalar field propagating in the BTZ black hole space-time. We find that for certain ranges of the black hole pa…
Non-Hermitian quantum mechanics in non-commutative space
Pulak Ranjan Giri, P Roy
We study non Hermitian quantum systems in noncommutative space as well as a \cal{PT}-symmetric deformation of this space. Specifically, a \mathcal{PT}-symmetric harmonic oscillator…