24 citations · 151 across the 16 of their papers we have counts for
16 papers
Systematic variations in divergence angle
Takuya Okabe
Practical methods for quantitative analysis of radial and angular coordinates of leafy organs of vascular plants are presented and applied to published phyllotactic patterns of var…
Geometric interpretation of phyllotaxis transition
Takuya Okabe
The original problem of phyllotaxis was focused on the regular arrangements of leaves on mature stems represented by common fractions such as 1/2, 1/3, 2/5, 3/8, 5/13, etc. The phy…
Vascular phyllotaxis transition and an evolutionary mechanism of phyllotaxis
Takuya Okabe
Leaves of vascular plants are arranged regularly around stems, a phenomenon known as phyllotaxis. A constant angle between two successive leaves is called divergence angle. On the…
Physical Phenomenology of Phyllotaxis
Takuya Okabe
We propose an evolutionary mechanism of phyllotaxis, regular arrangement of leaves on a plant stem. It is shown that the phyllotactic pattern with the Fibonacci sequence has a sele…
Spin-Fluctuation Drag Thermopower of Nearly Ferromagnetic Metals
Takuya Okabe
We investigate theoretically the Seebeck effect in materials close to a ferromagnetic quantum critical point to explain anomalous behaviour at low temperatures. It is found that th…
Fermi Surface Effect on Lorenz Number of Correlated Metal
Takuya Okabe
We investigate an effect that an ideal Lorenz number of correlated metal shows peculiar Fermi surface dependence, which is caused by the onset of a particular channel o…