We generalize the standard quantum adiabatic approximation to the case of open quantum systems. We define the adiabatic limit of an open quantum system as the regime in which its dynamical superoperator can be decomposed in terms of independently evolving Jordan blocks. We then establish validity and invalidity conditions for this approximation and discuss their applicability to superoperators ...

We investigate one-loop quantum corrections to the power spectrum of adiabatic perturbation from entropy modes/adiabatic mode cross-interactions in multiple DBI inflationary models. We find that due to the non-canonical kinetic term in DBI models, the loop corrections are enhanced by slow-varying parameter ǫ and small sound speed cs. Thus, in general the loop-corrections in multi-DBI models can...

Time-dependent density matrix functional theory can be formulated in terms of coupled-perturbed response equations, in which a coupling matrix K(omega) features, analogous to the well-known time-dependent density functional theory (TDDFT) case. An adiabatic approximation is needed to solve these equations, but the adiabatic approximation is much more critical since there is not a good "zero ord...

in this work, dynamic mechanical properties of three high-manganese steels with trip/twip or fully twip characteristics are studied. high strain rate experiments in the range of true strain rates between ~500 and 1800 /s are conducted using a dynamic torsional testing setup. all the three steels show a positive strain rate sensitivity in the intermediate range of strain rates (up to 500 /s). bu...

Power dissipation is an increasing concern in VLSI circuits. New logic circuits have been developed to meet these power requirements. Power dissipation can be minimized by using various adiabatic logic circuits. In this paper an Adder circuit has been proposed based on 2PASCL and ECRL logic and then compared with Positive Feedback Adiabatic Logic(PFAL), Two-Phase Adiabatic Static Clocked Logic(...

INTRODUCTION In scuba-diving practice, instantaneous gas consumption is generally calculated from the fall in cylinder pressure without considering the effects of water temperature (heat transfer) and adiabatic processes. We aimed to develop a simple but precise method for calculating the instantaneous gas consumption during a dive. METHODS With gas thermodynamics and water/gas heat transfer,...

We state and prove a generalized adiabatic theorem for Markov chains and provide examples and applications related to Glauber dynamics of the Ising model over Zd/nZd. The theorems derived in this paper describe a type of adiabatic dynamics for `(R+) norm preserving, time inhomogeneous Markov transformations, while quantum adiabatic theorems deal with `2(Cn) norm preserving ones, i.e. gradually ...