منابع مشابه
An Alternative to Compactification
Conventional wisdom states that Newton’s force law implies only four non-compact dimensions. We demonstrate that this is not necessarily true in the presence of a non-factorizable background geometry. The specific example we study is a single 3-brane embedded in five dimensions. We show that even without a gap in the Kaluza-Klein spectrum, four-dimensional Newtonian and general relativistic gra...
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We observe that the main feature of the Randall–Sundrum model, used to solve the hierarchy problem, is already present in a class of Yang–Mills plus gravity theories inspired by noncommutative geometry. Strikingly the same expression for the Higgs potential is found in two models which have no apparent connection. Some speculations concerning the possible relationships are given. ∗[email protected]...
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Spatial planning approaches along with complication of societies are being changed. These changes and transformations have reflected themselves in increasing diversification of economic patterns, people, group, organization, and institution’s mobility. While in less developed network societies some of the concepts including “distance” and “movement “are relatively losing their importance , some...
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In last decade, the uncontrolled use of antibiotics as growth promoter for livestock has led to the appearance of antibiotic-resistant pathogens and increased risk of infectious diseases. This situation has triggered intensive research efforts to find safe alternative strategies. Certainly, the plants and vegetables and their derivatives as natural safe substances could be good candidates in th...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1999
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.83.4690