Results 211 to 220 of about 405,410 (243)

EXACT BCS SOLUTION IN THE BCS-BEC CROSSOVER

International Journal of Modern Physics B, 2006
The exact Richardson solution of the reduced BCS Hamiltonian is used to study the BCS-to-BEC crossover, as well as the nature of Cooper pairs, in superconducting and Fermi superfluid media. Based on the exact eigenstate we will discuss the Cooper-pair concept proposing a scenario for the BCS-to-BEC crossover in which a mixture of quasifree fermions ...
Dukelsky, J., Ortiz, G., Rombouts, S. M. A.   +2 more
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Thalassocracies, 550 BC–400 BC

2011
The Mediterranean coasts might be expected to serve as the natural limit to imperial expansion by the great powers of the Middle East – the Hittites, Assyria, even Pharaonic Egypt. The Assyrians did occasionally try to browbeat Cyprus into submission, as did the Egyptians, for its resources in timber and metal were too precious to ignore.
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Correlated BCS theory

Nuclear Physics A, 1981
A variational theory of the BCS pair-condensed state of strongly-interacting Fermi system is briefly outlined. An FHNC scheme is devised to calculate the radial distribution function and the one-and the twobody density matrices.
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BC investment for 10 stations, Hydrogen BC

Fuel Cells Bulletin, 2020
The Government of British Columbia has allocated C$10 million (US$7.6 million) for the construction and operation of 10 hydrogen refueling stations in Canada's western province, as well as three years of support for Hydrogen BC – a new entity of the Canadian Hydrogen and Fuel Cell Association (CHFCA), with a focus on British Columbia.
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Alexandria from 300 BC to 200 BC

1995
The school of mathematics established by Euclid in Alexandria produced some first rate mathematicians in the third century BC. Among them were the following: ● Aristarchus of Samos, 310 - 250 BC, ● Archimedes of Syracuse, 287 - 212 BC, ● Apollonius of Perga, 260 - 190 BC, ● Eratosthenes of Cyrene, 275 - 195 BC.
W. S. Anglin, J. Lambek
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Aglaonike (V bc or 200 bc)

2016
Its name means “shining victory” or “victory of light”, but other than that very little is known about Aglaonike, also called Aglonice, who was born and lived in Thessaly. According to some sources she is considered to be the first woman astronomer and in fact Aglaonike was a master in the art of predicting eclipses, being able to determine the exact ...
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Ancient Greece: 1100 BC to 30 BC

2018
The collapse of the Mycenaean civilisation of the Mediterranean coincided with the commencement of the Greek Dark Ages. The period of this age was between the thirteenth century BC and the eleventh century BC, and it coincided with a dramatic drop in Greece’s population.
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Isolation and Insulation, 22000 BC–3000 BC

2011
Carved out millions of years before mankind reached its coasts, the Mediterranean Sea became a ‘sea between the lands’ linking opposite shores once human beings traversed its surface in search of habitation, food or other vital resources. Early types of humans inhabited the lands bordering the Mediterranean 435,000 years before the present, to judge ...
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Copper and Bronze, 3000 BC–1500 BC

2011
The development of prehistoric societies has always been viewed from one of two perspectives: a diffusionist approach, now largely out of fashion, which attributes the arrival of new styles and techniques to migration and trade; or an emphasis on the factors within a society that fostered change and growth.
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Merchants and Heroes, 1500 BC–1250 BC

2011
In the years around 1500 BC Crete experienced not just massive economic changes but very significant political changes. The arrival of a Greek dynasty on the island occurred around the time that many settlements such as Arkhanes were abandoned; Knossos alone survived among the great palaces, and one Minoan site after another was destroyed.
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