Jan Ekecrantz (1940-2007)

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∗ Jan

We formulate a complete path integral bosonization procedure for any fermionic theory in two dimensions. The classical action of the bosons in the bosonized theory is −i times the logarithm of the Jacobian of a local chiral transformation, with the boson fields as transformation parameters. Three examples, the Schwinger model, the massive Thirring model and massive non-Abelian bosonization, are...

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BACKGROUND The timing of onset of the rise in incidence of esophageal adenocarcinoma (EAC) has not been clearly defined, and doing so may provide clues with regard to exposures associated with the changed epidemiology of this malignancy. We therefore aimed to investigate historical trends in the incidence of EAC and other upper gastrointestinal malignancies. METHODS We did a population-based ...

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Causes for the decline of suspended-sediment discharge in the Mississippi River system, 1940-2007

Before 1900, the Missouri–Mississippi River system transported an estimated 400 million metric tons per year of sediment from the interior of the United States to coastal Louisiana. During the last two decades (1987–2006), this transport has averaged 145 million metric tons per year. The cause for this substantial decrease in sediment has been attributed to the trapping characteristics of dams ...

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Does Foreign Direct Investment Help Emerging Economies? - Economic Letter, Jan. 2007 - FRB Dallas

The gap between the world's rich and poor countries largely comes down to the financial and physical assets that create wealth. Developed economies possess more of this capital than developing ones, and what they have usually incorporates more advanced technologies. The implication is clear: A key aspect of economic advancement lies in poorer nations' capacity to acquire more capital and scale ...

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ژورنال

عنوان ژورنال: Hermès

سال: 2008

ISSN: 0767-9513,1963-1006

DOI: 10.4267/2042/28170