منابع مشابه
Toy Models for Retrocausality
A number of writers have been attracted to the idea that some of the peculiarities ofquantum theory might be manifestations of ‘backward’ or ‘retro’ causality, underlying thequantum description. This idea has been explored in the literature in two main ways:firstly in a variety of explicit models of quantum systems, and secondly at a concep-tual level. This note introduces a...
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The anomalous dimensions of local single trace gauge invariant operators in N = 4 supersymmetric Yang-Mills theory can be computed by diagonalizing a long range integrable Hamiltonian by means of a perturbative asymptotic Bethe ansatz. This formalism breaks down when the number of fields of the composite operator is smaller than the range of the Hamiltonian which coincides with the order in per...
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Many models have been used to simplify and operationalize the subtle but complex mechanisms of biological evolution. Toy models are gross simplifications that nevertheless attempt to retain major essential features of evolution, bridging the gap between empirical reality and formal theoretical understanding. In this paper, we examine thirteen models which describe evolution that also qualify as...
متن کاملToy Models for D. H. Lehmer’s Conjecture
In 1947, Lehmer conjectured that the Ramanujan τ -function τ(m) never vanishes for all positive integers m, where the τ(m) are the Fourier coefficients of the cusp form ∆24 of weight 12. Lehmer verified the conjecture in 1947 for m < 214928639999. In 1973, Serre verified up to m < 10, and in 1999, Jordan and Kelly for m < 22689242781695999. The theory of spherical t-design, and in particular th...
متن کاملQuantum Mechanics and Retrocausality
The classical electrodynamics of point charges can be made nite by the introduction of e ects that temporally precede their causes The idea of retrocausal ity is also inherent in the Feynman propagators of quantum electrodynamics The notion allows a new understanding of the violation of the Bell inequalities and of the world view revealed by quantum mechanics
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ژورنال
عنوان ژورنال: Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics
سال: 2008
ISSN: 1355-2198
DOI: 10.1016/j.shpsb.2008.05.006