54 research outputs found
Has the evolution of complexity in the amphibian papilla influenced anuran speciation rates?
Full text linkPeer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/72375/1/j.1420-9101.2006.01079.x.pd
Metamagnetic phase transition in the Ising plus Dzyaloshinskii-Moriya model
Full text linkWe study the 1D ferromagnetic Ising (spin-1/2) model with the
Dzyaloshinskii-Moriya (DM) interaction. We analyze the low energy excitation
spectrum and the ground state magnetic phase diagram using the Lanczos method.
The DM interaction-dependency is calculated for the low-energy excitation
spectrum, spiral order parameter and spin-spin correlation functions. We show
that a metamagnetic quantum phase transition occurs between the ferromagnetic
and spiral phases. The existence of the metamagnetic phase transition is
confirmed, using the variational matrix product states approach.Comment: 5 pages, 6 figure
Males adjust their signalling behaviour according to experience of male signals and male–female signal duets
No full textTemperature effects on frequency preferences and mating call frequencies in the green treefrog,Hyla cinerea (Anura: Hylidae)
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Evolution of advertisement signals in North American hylid frogs: vocalizations as end-products of calling behavior
No full textDiversification under sexual selection: the relative roles of mate preference strength and the degree of divergence in mate preferences
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Elevational speciation in action? Restricted gene flow associated with adaptive divergence across an altitudinal gradient
No full textSong structure, not high‐frequency song content, determines high‐frequency auditory sensitivity in nine species of N
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