65 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Keio UniversityJP7 papers
- University of WarwickGB4 papers
- Tohoku UniversityJP3 papers
- Tokyo University of ScienceJP3 papers
- University of TsukubaJP3 papers
- Ferris UniversityJP2 papers
- Hokkaido UniversityJP2 papers
- Meiji Gakuin UniversityJP2 papers
- Muroran Institute of TechnologyJP2 papers
- Nagoya UniversityJP2 papers
- National Institute of TechnologyJP2 papers
- Tokyo Woman's Christian UniversityJP2 papers
24 papers · 1 filter
Complex saddles of three-dimensional de Sitter gravity via holography
Heng-Yu Chen, Yasuaki Hikida, Yusuke Taki +1
We determine complex saddles of three-dimensional gravity with a positive cosmological constant by applying the recently proposed holography. It is sometimes useful to consider a c…
Massive dual gauge field and confinement in Minkowski space : Electric charge
Hirohumi Sawayanagi
SU(2) gauge theory in the nonlinear gauge of the Curci-Ferrari type is studied in low-energy region. We give a classical solution that connects color electric charges. Its dual sol…
Massive dual gauge field and confinement in Minkowski space : Magnetic charge
Hirohumi Sawayanagi
Gauge field configuration for a magnetic monopole and its dual configuration are studied in SU(2) gauge theory. We present a relation between the monopole field and its dual field.…
Multiloop Amplitudes of Light-cone Gauge Superstring Field Theory: Odd Spin Structure Contributions
Nobuyuki Ishibashi, Koichi Murakami
We study the odd spin structure contributions to the multiloop amplitudes of light-cone gauge superstring field theory. We show that they coincide with the amplitudes in the confor…
Condensate and massive magnetic potential in Euclidean gauge theories
Hirohumi Sawayanagi
Euclidean gauge theory is studied in a nonlinear gauge. In this theory, ghost condensation happens and gauge fields acquire tachyonic masses. It is shown that these tachyon…
The Gribov Horizon and Ghost Interactions in Euclidean Gauge Theories
Hirohumi Sawayanagi
The effect of the Gribov horizon in Euclidean gauge theory is studied. Gauge fields on the Gribov horizon yield zero modes of ghosts and anti-ghosts. We show these zero mod…
Multiloop Amplitudes of Light-cone Gauge NSR String Field Theory in Noncritical Dimensions
Nobuyuki Ishibashi, Koichi Murakami
Feynman amplitudes of light-cone gauge superstring field theory are ill-defined because of various divergences. In a previous paper, one of the authors showed that taking the world…
Vortex driven phase transition in Topologically Massive QED
Yuichi Hoshino
There is chiral like symmetry for 4-component massless fermion in (2+1)-dimensional gauge theory.Since QED with Chern-Simons term contains vortex solution for vector potentia…
Worldsheet theory of light-cone gauge noncritical strings on higher genus Riemann surfaces
Nobuyuki Ishibashi, Koichi Murakami
It is possible to formulate light-cone gauge string field theory in noncritical dimensions. Such a theory corresponds to conformal gauge worldsheet theory with nonstandard longitud…
Gauge Theories in Noncommutative Homogeneous Kähler Manifolds
Yoshiaki Maeda, Akifumi Sako, Toshiya Suzuki +1
We construct a gauge theory on a noncommutative homogeneous Kähler manifold, where we employ the deformation quantization with separation of variables for Kähler manifolds formulat…
Soft-photon exponentiation beyond the quenched approximation in QED
Yuichi Hoshino
We discuss the infrared and ultraviolet behavior of the fermion propagator in (2+1)-dimensional QED based on spectral representation.If we choose soft-photon exponentiation to incl…
Off-shell Invariant D=N=2 Twisted Super Yang-Mills Theory with a Gauged Central Charge without Constraints
Keisuke Asaka, Junji Kato, Noboru Kawamoto +1
We formulate N=2 twisted super Yang-Mills theory with a gauged central charge by superconnection formalism in two dimensions. We obtain off-shell invariant supermultiplets and acti…
Moduli space volume of vortex and localization
Akiko Miyake, Kazutoshi Ohta, Norisuke Sakai
Volume of moduli space of BPS vortices on a compact genus h Riemann surface Sigma_h is evaluated by means of topological field theory and localization technique. Vortex in Abelian…
Volume of Moduli Space of Vortex Equations and Localization
Akiko Miyake, Kazutoshi Ohta, Norisuke Sakai
We evaluate volume of moduli space of BPS vortices on a compact Riemann surface by using topological field theory and localization technique developed by Moore, Nekrasov and Shatas…
Mass deformation of twisted super Yang-Mills theory with fuzzy sphere solution
Junji Kato, Yoshi Kondo, Akiko Miyake
We investigate mass deformation of twisted superalgebra of U(N) super Yang-Mills (SYM) theories in several models and in several dimensions, motivated by the method formulated in […
Phase structure of Topologically massive gauge theory with fermion
Yuichi Hoshino
Using Bloch-Nordsieck approximation fermion propagator in 3-dimensional gauge theory with topological mass is studied. Infrared divergence of Chern-Simon term is soft,which modifie…
Noncommutative Deformation of Spinor Zero Mode and ADHM Construction
Yoshiaki Maeda, Akifumi Sako
A method to construct noncommutative instantons as deformations from commutative instantons was provided in arXiv:0805.3373. Using this noncommutative deformed instanton, we invest…
Infrared behaviour of the fermion propagator in unquenched QED with finite threshold effects
Yuichi Hoshino
To remove the linear infrared divergences in quenched approximation we include the massive fermion loop to the photon spectral function.Spectral function of fermion has no one part…
Generalized Conformal Symmetry and Recovery of SO(8) in Multiple M2 and D2 Branes
Yoshinori Honma, Satoshi Iso, Yoske Sumitomo +2
We investigate conformal symmetries of the Aharony-Bergman-Jafferis-Maldacena (ABJM) theory for multiple M2 branes and the Lorentzian Bagger-Lambert-Gustavsson (L-BLG) theory which…
Noncommutative Deformation of Instantons
Yoshiaki Maeda, Akifumi Sako
We construct instanton solutions on noncommutative Euclidean 4-space which are deformations of instanton solutions on commutative Euclidean 4-space. We show that the instanton numb…
Determination of the propagator in QED3 by spectral function
Yuichi Hoshino
To study the infrared behaviour of the propagator, exponentiation of the lowest order spectral function has been known.We show this method is helpful in super renormalizable theory…
Mass singularity and confinement
Yuichi Hoshino
Infrared behaviour of the fermion propagator is examined by spectral representation.Assuming asymptotic states and using LSZ reduction formula we evaluate the the lowest order spec…
Mass singularity and confining property in
Yuichi Hoshino
We discuss the properties of the position space fermion propagator in three dimensional QED which has been found previouly based on Ward-Takahashi-identity for soft-photon emission…
The Gauge Technique in QED_{2+1}
Y. Hoshino
The Gauge Technique has been applied to QED in the quenched case with infrared subtraction. The behaviour of the fermion propagator near the threshold is then found to be \…