منابع مشابه
Some remarks on Oscillating Inflation
Nowadays inflation is a widely accepted element of the early cosmology [1]. It gives the possibility of solving many of the shortcomings of the standard hot big bang model and provides the source for the early energy density fluctuations responsible of the large scale structure of the universe observed today. Although there are many models of inflation, the underlying physical ideas are well es...
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In a recent paper Damour and Mukhanov describe a scenario where inflation may continue during the oscillatory phase. This effect is possible because the scalar field spends a significant fraction of each period f oscillation on the upper part of the potential. Such additional period of inflation could push perturbations after the slow roll regime to observable scales. Although we show that the ...
متن کاملRemarks on Inflation
It has been shown that sub-Planckian models of inflation require initial homogeneity on super-Hubble scales under certain commonly held assumptions. Here I remark on the possible implications of this result for inflationary cosmology. The observed homogeneity of the universe on superhorizon scales can be explained if there was a period of accelerated expansion (inflation) in the early universe ...
متن کاملSome Remarks on Roeper’s Remarks on Chomsky’s ‘Remarks’
In his 1970 paper ‘Remarks on nominalization’, Noam Chomsky provided several arguments for the lexicalist hypothesis, namely the idea that nouns like refusal, rejection, growth, and so on are nouns throughout the entire syntactic derivation. Tom Roeper’s paper ‘Chomsky’s Remarks and the transformationalist hypothesis’ challenges the lexicalist hypothesis, arguing that such nouns are syntactical...
متن کاملSome remarks on the arithmetic-geometric index
Using an identity for effective resistances, we find a relationship between the arithmetic-geometric index and the global ciclicity index. Also, with the help of majorization, we find tight upper and lower bounds for the arithmetic-geometric index.
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1999
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.61.027302