5 papers
Motivating semiclassical gravity: a classical-quantum approximation for bipartite quantum systems
Viqar Husain, Irfan Javed, Sanjeev S. Seahra +1
We derive a "classical-quantum" approximation scheme for a broad class of bipartite quantum systems from fully quantum dynamics. In this approximation, one subsystem evolves via cl…
Dynamics and entanglement in quantum and quantum-classical systems: lessons for gravity
Viqar Husain, Irfan Javed, Suprit Singh
Motivated by quantum gravity, semi-classical theory, and quantum theory on curved spacetimes, we study the system of an oscillator coupled to two spin-1/2 particles. This model pro…
The quantum Zeno and anti-Zeno effects in the strong coupling regime
Ghazi Khan, Hudaiba Soomro, Muhammad Usman Baig +2
It is well known that repeated projective measurements can either speed up (the Zeno effect) or slow down (the anti-Zeno effect) quantum evolution. Until now, however, studies of t…
The Zeno and anti-Zeno effects: studying modified decay rates for spin-boson models with both strong and weak system-environment couplings
Irfan Javed, Mohsin Raza
In this paper, we look into what happens to a quantum system under repeated measurements if system evolution is removed before each measurement is performed. Beginning with investi…
Impact of independent reservoirs on the quantum Zeno and anti-Zeno effects
Irfan Javed, Mohsin Raza, Adam Zaman Chaudhry
In this paper, we look into what happens to a quantum system under repeated measurements if it interacts with two independent reservoirs. In particular, we look at the behavior of…