6 citations · 14 across the 6 of their papers we have counts for
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Sign of the Feynman Propagator and Irreversibility
Allan Tameshtit
For the interacting Feynman propagator of scalar electrodynamics, we show that the sign property, , hinges on the reversib…
Coherent Processing of a Qubit Using One Squeezed State
Allan Tameshtit
We use a single squeezed state to represent a qubit, which can be coherently processed in a deconvolution picture (DP) in the presence of noise. We avail ourselves of the fact that…
Fluctuation-Dissipation Inequality for Quadratic Open Systems
Allan Tameshtit
For open systems derived from quadratic total Hamiltonians, we derive a dynamic fluctuation-dissipation (FD) inequality valid for any total initial state and without regard to the…
On the standard quantum Brownian equation and an associated class of non-autonomous master equations
Allan Tameshtit
It is shown that the standard quantum Brownian equation (QBE) can violate positivity not only past the thermal correlation time, but at arbitrarily long times at high system freque…
Zero-point energies, the uncertainty principle and positivity of the quantum Brownian density operator
Allan Tameshtit
High temperature and white noise approximations are frequently invoked when deriving the quantum Brownian equation for an oscillator. Even if this white noise approximation is avoi…
The Inner Limit of Quantum Brownian Evolution and its Relevance to Positivity
Allan Tameshtit
The conventional quantum Brownian propagator, which describes the evolution of a system of interest bilinearly coupled to and initially uncorrelated with a reservoir, does not pres…