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Unitarity of the time-evolution and observability of non-Hermitian Hamiltonians for time-dependent Dyson maps
(Iop Publishing Ltd, 2020-06-01)
We present an strategy for the derivation of a time-dependent Dyson map which ensures simultaneously the unitarity of the time evolution and the observability of the whole time-dependent non-Hermitian Hamiltonian or parts ...
Conflict between the classical equivalence principle and quantum mechanics
(2009-05-11)
As far as external gravitational fields described by Newton's theory are concerned, theory shows that there is an unavoidable conflict between the universality of free fall (Galileo's equivalence principle) and quantum ...
Extreme dependence with asymmetric thresholds: Evidence for the European Monetary Union
(ELSEVIER SCIENCE BV, 2012)
An explanatory mechanism for the different decline in limb strength in older women
(Elsevier B.V., 2009-11-01)
The aim of the study was to compare the physical activity level and intensity of the upper and lower limbs in Brazilian women who are usually active, functionally independent, and living in a medium size city. Seventy-two ...
Structural basis for inhibition of cyclin-dependent kinase 9 by flavopiridol
(2002-07-08)
Flavopiridol has been shown to potently inhibit CDK1 and 2 (cyclin-dependent kinases 1 and 2) and most recently it has been found that it also inhibits CDK9. The complex CDK9-cyclin T1 controls the elongation phase of ...
Separation of particles in time-dependent focusing billiards
(Elsevier B.V., 2010-12-01)
We consider a family of stadium-like billiards with time-dependent boundaries. Two different cases of time dependence are studied: (i) the fixed boundary approximation and (ii) the exact model which takes into account the ...
Dynamical Invariants and Quantization of the One-Dimensional Time-Dependent, Damped, and Driven Harmonic Oscillator
(Springer, 2020-06-30)
In this paper, it is proposed a quantization procedure for the one-dimensional harmonic oscillator with time-dependent frequency, time-dependent driven force, and time-dependent dissipative term. The method is based on the ...
Imperialism and latin american structural dependency: some conceptual, historical and contemporary aspects
(Univ Sao Paulo, Fac Filosofia, 2020-07-01)
This article discusses Latin American structural dependence. At least since the 1920s, this theme has enabled an axis of interpretations on social misery and economic retardment in the region. The main emphasis for this ...
Coordinate and time-dependent diffusion dynamics in protein folding
(Academic Press Inc. Elsevier B.V., 2010-09-01)
We developed both analytical and simulation methods to explore the diffusion dynamics in protein folding. We found the diffusion as a quantitative measure of escape from local traps along the protein folding funnel with ...