3 papers
quant-ph2019
Quantum dynamics from fixed points and their stability
Rohit Chawla, Jayanta K. Bhattacharjee
We approach quantum dynamics in one spatial dimension from a systematic study of moments starting from the dynamics of the mean position. This is complementary to the approach of B…
nlin.CD2019
Quantum fluctuations stabilize an inverted pendulum
Rohit Chawla, Soumyabrata Paul, Jayanta K. Bhattacharjee
We explore analytically the quantum dynamics of a point mass pendulum using the Heisenberg equation of motion. Choosing as variables the mean position of the pendulum, a suitably d…
quant-ph2018
From periodically driven double wells to volcano potentials: Quantum dynamics
Soumyabrata Paul, Rohit Chawla, Mandira Das +1
We consider the dynamics of a particle confined in a double well potential which is subjected to a periodic drive. In the case of deep and well separated wells, we find that by adj…