47 citations · 184 across the 29 of their papers we have counts for
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Lorentz covariant field theory on noncommutative spacetime based on DFR algebra
Yoshitaka Okumura
Lorentz covariance is the fundamental principle of every relativistic field theory which insures consistent physical descriptions. Even if the space-time is noncommutative, field t…
Noncommutative gauge theory with arbitrary U(1) charges
Yoshitaka Okumura
It is well-known that the charge of fermion is 0 or in the U(1) gauge theory on noncommutative spacetime. Since the deviation from the standard model in particle physics has…
Lorentz Invariance And Unitarity Problem In Non-Commutative Field Theory
Katsusada Morita, Yoshitaka Okumura, Eizou Umezawa
It is shown that the one-loop two-point amplitude in {\it Lorentz-invariant} non-commutative (NC) theory is finite after subtraction in the commutative limit and satisfies th…
Lorentz invariant nonabelian gauge theory on noncommutative space-time and BRST symmetry
Yoshitaka Okumura, Katsusada Morita, Kouhei Imai
Lorentz covariance is the fundamental principle of every relativistic field theory which insures consistent physical descriptions. Even if the space-time is noncommutative, field t…