Results 11 to 20 of about 1,153,013 (262)
Contains fulltext : 103494pre.pdf (Author’s version preprint ) (Open Access)
Jongejans, E., de Kroon, H.
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The effect of habitat transformation on a twig epiphytic orchid: Evidence from population dynamics
The tropical Andean landscape has been dramatically transformed over the last century with remaining native forest limited to small fragments within a heterogeneous matrix of crops, cattle pastures, and urban environments.
Nhora Helena Ospina-Calderón +4 more
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The formal demography of kinship II: Multistate models, parity, and sibship
Background: Recent kinship models focus on the age structures of kin as a function of the age of the focal individual. However, variables in addition to age have important impacts.
Hal Caswell
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Gribov's observation that global gauge fixing is impossible has led to suggestions that there may be a deep connection between gauge fixing and confinement. We find an unexpected relation between the topological nontriviality of the gauge bundle and colored states in SU (N) Yang–Mills theory, and show that such states are necessarily impure.
Balachandran, AP +2 more
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From biodiversity to health: Quantifying the impact of diverse ecosystems on human well‐being
Ample evidence suggests positive effects of species diversity on ecosystem functioning and services in natural and agricultural landscapes. Less obvious and even contested are the effects of such diversity on human well‐being.
Werner Ulrich +13 more
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Matrix Models and Matrix Integrals [PDF]
10 pages, contribution to the International Workshop "Classical and Quantum Integrable Systems", Dubna, Russia ...
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On geometry and matrix models [PDF]
We point out two extensions of the relation between matrix models, topological strings and N=1 supersymmetric gauge theories. First, we note that by considering double scaling limits of unitary matrix models one can obtain large N duals of the local Calabi-Yau geometries that engineer N=2 gauge theories.
Dijkgraaf, Robbert, Vafa, Cumrun
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The Gaussian matrix model is known to deform to the q,t-matrix model. We consider further deformation to the elliptic q,t matrix model by properly deforming the Gaussian density as well as the Vandermonde factor.
Andrei Mironov, Alexei Morozov
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ABSTRACTWe study a U(N) gauged matrix quantum mechanics which, in the large N limit, is closely related to the chiral WZW conformal field theory. This manifests itself in two ways. First, we construct the left-moving Kac-Moody algebra from matrix degrees of freedom.
Dorey, Nick, Tong, David, Turner, Carl
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