321 citations · 1.3k across the 22 of their papers we have counts for
23 papers
Sectional Curvature Pinching of Two-Step Nilmanifolds
Tomoya Tatsuno
We study the classical problem of sectional curvature pinching in the class of 2-step nilmanifolds, which are necessarily of mixed curvature. We show that the pinching constant of…
Abstract Group Automorphisms of Two-Step Nilpotent Lie Groups and Partial Automatic Continuity
Tomoya Tatsuno
Any abstract (not necessarily continuous) group automorphism of a simple, compact Lie group must be continuous due to Cartan (1930) and van der Waerden (1933). The purpose of this…
Plasma sheet thinning due to loss of near-Earth magnetotail plasma
Rudolf Tretler, Tomo Tatsuno, Keisuke Hosokawa
A one-dimensional model for thinning of the Earth's plasma sheet [J. K. Chao et al., Planet. Space Sci. 25, 703 (1977)] according to the Current Disruption (CD) model of auroral br…
Magnetic field effects in a correlated electron system with spin-state degree of freedom - Implication of an excitonic insulator -
Taro Tatsuno, Eriko Mizoguchi, Joji Nasu +2
Magnetic field (H) effects on a correlated electron system with the spin-state degree of freedom are examined. The effective Hamiltonian derived from the two-orbital Hubbard model…
Freely decaying turbulence in two-dimensional electrostatic gyrokinetics
T. Tatsuno, G. G. Plunk, M. Barnes +3
In magnetized plasmas, a turbulent cascade occurs in phase space at scales smaller than the thermal Larmor radius ("sub-Larmor scales") [Phys. Rev. Lett. 103, 015003 (2009)]. When…
Considering Fluctuation Energy as a Measure of Gyrokinetic Turbulence
G. G. Plunk, T. Tatsuno, W. Dorland
In gyrokinetic theory there are two quadratic measures of fluctuation energy, left invariant under nonlinear interactions, that constrain the turbulence. The recent work of Plunk a…