9 citations · 9 across the 1 of their papers we have counts for
6 papers
Holonomies of gauge fields in twistor space 1: bialgebra, supersymmetry, and gluon amplitudes
Yasuhiro Abe
We introduce a notion of holonomy in twistor space and construct a holonomy operator by use of a spinor-momenta formalism in twistor space. The holonomy operator gives a monodromy…
An interpretation of multigraviton amplitudes
Yasuhiro Abe
We obtain alternative expressions for the multigraviton tree level amplitudes and discuss their general properties. In particular, by analogy with Yang-Mills theory, we find that s…
Optical diffraction spectroscopy of excitons in uniaxially-strained GaN films
Y. Toda, S. Adachi, Y. Abe +2
The degenerate four-wave mixing spectroscopy of uniaxially strained GaN layers is demonstrated using colinearly polarized laser pulses. The nonlinear response of FWM signal on exci…
Multigluon amplitudes, constraints and the WZW model
Yasuhiro Abe, V. P. Nair, Mu-In Park
Classical Yang-Mills theory is defined by the superspace constraints. We obtain a solution of a subset of these constraints and show that it leads to the maximally hel…
Construction of fuzzy S^4
Yasuhiro Abe
We construct a fuzzy , utilizing the fact that is an bundle over . We find that a fuzzy can be described by a block-diagonal form whose embedding…
Noncommutative gravity: fuzzy sphere and others
Yasuhiro Abe, V. P. Nair
Gravity on noncommutative analogues of compact spaces can give a finite mode truncation of ordinary commutative gravity. We obtain the actions for gravity on the noncommutative two…