3 We discuss the descriptions of states of physical systems in classical and quantum mechanics. We show that while it is possible to evolve a terminology common to both, the di®erences in the underlying mathematical structures lead to signi ̄cant points of departure between the two descriptions both at mathematical and conceptual levels. We analyse the state spaces associated with physical syste...

We construct a general state which is an eigenvector of the annihilation operator of the Generalized Heisenberg Algebra. We show for several systems, which are characterized by different energy spectra, that this general state satisfies the minimal set of conditions required to obtain Klauder’s minimal coherent states.

Using simple analytical estimates we show how the physical parameters characterizing different spectral states of the galactic black hole candidates can be determined using spectral data presently available. SPECTRAL STATES OF GBHC Galactic black hole candidates (GBHC) radiate in one of several spectral states, and some of them switch suddenly from one state to another. These states can be typi...

The analysis of extreme states of consciousness (perinatal experience and transpersonal experience) is outside the sphere of normal science. Experience goes beyond the empirically evidenced frames of consciousness and become transcendental towards rational manifestations. The author offers hypothesis of possible worlds with emphasis on the authenticity of the experience in the role of the facto...

A new model is studied which describes the quantum behavior of transitions through an isotropic quantum cosmological bounce in loop quantum cosmology sourced by a free and massless scalar field. As an exactly solvable model even at the quantum level, it illustrates properties of dynamical coherent states and provides the basis for a systematic perturbation theory of loop quantum gravity. The de...

A symmetric zero mass tensor of rank two is constructed using the superstring modes of excitation which satisfies the physical state constraints of a superstring. These states have one to one correspondence with the quantised operators and are shown to be the absorption and emission quanta of the Minkowski space Lorentz tensor, using the Gupta-Bleuler method of quantisation. The principle of eq...

BACKGROUND Adults with disabilities are less active and have higher rates of chronic disease than the general population. Given the health benefits of physical activity, understanding physical activity, its relationship with chronic disease, and health professional recommendations for physical activity among young to middle-age adults with disabilities could help increase the effectiveness of h...