منابع مشابه
Riding on irrelevant operators
We investigate the stability of a class of derivative theories known as P (X) and Galileons against corrections generated by quantum effects. We use an exact renormalisation group approach to argue that these theories are stable under quantum corrections at all loops in regions where the kinetic term is large compared to the strong coupling scale. This is the regime of interest for screening or...
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Using Wilson-Polchinski renormalization group equations, we give a simple new proof of decoupling in a φ-type scalar field theory involving two real scalar fields (one is heavy with mass M and the other light). Then, to all orders in perturbation theory, it is shown that effects of virtual heavy particles up to the order 1/M0 can be systematically incorporated into light-particle theory via eff...
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It is traditional wisdom that one should start from the goals when generating a plan in order to focus the plan generation process on potentially relevant actions. The graphplan system, however, which is the most eecient planning system nowadays, builds a \planning graph" in a forward-chaining manner. Although this strategy seems to work well, it may possibly lead to problems if the planning ta...
متن کاملFree Riding on Gnutella
An extensive analysis of user traffic on Gnutella shows a significant amount of free riding in the system. By sampling messages on the Gnutella network over a 24-hour period, we established that 70% of Gnutella users share no files, and 90% of the users answer no queries. Furthermore, we found out that free riding is distributed evenly between domains, so that no one group contributes significa...
متن کاملFree Riding on Gnutella
extensive analysis of user traffic on Gnutella shows a significant amount of free riding in the system. By sampling messages on the Gnutella network over a 24-hour period, we established that almost 70% of Gnutella users share no files, and nearly 50% of all responses are returned by the top 1% of sharing hosts. Furthermore, we found out that free riding is distributed evenly between domains, s...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2014
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2014/11/016