Universal Histories

Bohmian Histories and Decoherent Histories

The predictions of the Bohmian and the decoherent (or consistent) histories formulations of the quantum mechanics of a closed system are compared for histories — sequences of alternatives at a series of times. For certain kinds of histories, Bohmian mechanics and decoherent histories may both be formulated in the same mathematical framework within which they can be compared. In that framework, ...

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Natural histories

And because it is surrounded by an array of 60,000 photo-voltaic cells, the academy will produce more than five per cent of its electricity and overall use around a third less energy than the maximum allowed by San Francisco's already strict laws. " We could have thought of a different solution for the roof without plants and birds, " says Piano. " But the green roof is about a new spirit for t...

Quantum Histories

There are good motivations for considering some type of quantum histories formalism. Several possible formalisms are known, defined by different definitions of event and by different selection criteria for sets of histories. These formalisms have a natural interpretation, according to which nature somehow chooses one set of histories from among those allowed, and then randomly chooses to realis...

Case histories.

The conditions related to abnormalities of calcium and bone metabolism are large in number and cover problems of hypocalcaemia, hypercalcaemia, primary and secondary osteoporosis, rickets resulting from both vitamin D and phosphate metabolic disorders, and a series of miscellaneous conditions. Included in this chapter is a series of 36 cases drawn from our clinics and from colleagues who have p...