منابع مشابه
Broken Symmetries
have large errors, are in complete agreement with the physical-region plots obtained by other authors" as well as our own I Fig. 7(a)j. The results given here support the general validity of the Chew-Low technique. They illustrate the strong statistical requirements to which a meaningful application of this technique is subjected; they also show that pole effects seen in the physical region are...
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Recently we studied inflation models in which the inflaton potential is characterized by an underlying approximate global symmetry. In the first work we pointed out that in such a model curvature perturbations are generated after the end of the slow-roll phase of inflation. In this work we develop further the observational implications of the model and compute the degree of non-Gaussianity pred...
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We present a general analysis of the field theoretical properties which guarantee the recovery, at the renormalized level, of symmetries broken by regularization. We also discuss the anomalous case.
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This paper considers the issue of Bose-Einstein condensation in a weakly interacting Bose gas with a fixed total number of particles. We use an old current algebra formulation of non-relativistic many body systems due to Dashen and Sharp to show that, at sufficiently low temperatures, a gas of weakly interacting Bosons displays Off-diagonal Long Range Order in the sense introduced by Penrose an...
متن کاملBroken symmetries in multilayered perceptrons.
The statistical mechanics of two-layered perceptrons with N input units, K hidden units, and a single output unit that makes a decision based on a majority rule (Committee Machine), is studied. Two architectures are considered. In the nonoverlapping case the hidden units do not share common inputs. In the fully connected case each hidden unit is connected to the entire input layer. In both case...
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ژورنال
عنوان ژورنال: Europhysics News
سال: 1981
ISSN: 0531-7479,1432-1092
DOI: 10.1051/epn/19811202001