48 citations · 150 across the 14 of their papers we have counts for
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Mega-Space Current Algebra and Green-Schwarz Geometry in Heterotic String Theory
Machiko Hatsuda, Shin Sasaki, Masaya Yata
We study the Lorentz and gauge connections in heterotic string theories within a framework of manifest T-duality. A central motivation is the Bergshoeff--de Roo (BdR) type parallel…
Gauged Double Field Theory, Current Algebras and Heterotic Sigma Models
Machiko Hatsuda, Haruka Mori, Shin Sasaki +1
We study the generalized metric and the gauge symmetries in the gauged double field theory (DFT) in view of current algebras and sigma models. We show that the $O(D,D+n)…
Five-brane Current Algebras in Type II String Theories
Machiko Hatsuda, Shin Sasaki, Masaya Yata
We study the current algebras of the NS5-branes, the Kaluza-Klein (KK) five-branes and the exotic -branes in type IIA/IIB superstring theories. Their worldvolume theories ar…
Gauge Five-brane Solutions of Co-dimension Two in Heterotic Supergravity
Shin Sasaki, Masaya Yata
We continue to study the BPS gauge five-brane solutions of codimension two in ten-dimensional heterotic supergravity. The geometry including the dilaton and the NS-NS -field are…
Non-geometric Five-branes in Heterotic Supergravity
Shin Sasaki, Masaya Yata
We study T-duality chains of five-branes in heterotic supergravity where the first order -corrections are present. By performing the -corrected T-duality transformations of…
World-volume Effective Action of Exotic Five-brane in M-theory
Tetsuji Kimura, Shin Sasaki, Masaya Yata
We study the world-volume effective action of an exotic five-brane, known as the M-theory 5-brane (M5-brane) in eleven dimensions. The supermultiplet of the world-volum…
Hyper-Kähler with Torsion, T-duality, and Defect (p,q) Five-branes
Tetsuji Kimura, Shin Sasaki, Masaya Yata
We investigate a five-branes interpretation of hyper-Kähler geometry with torsion (HKT). This geometry is obtained by conformal transformation of the Taub-NUT space which represent…
T-duality Transformation of Gauged Linear Sigma Model with F-term
Tetsuji Kimura, Masaya Yata
We develop the duality transformation rules in two-dimensional theories in the superfield formalism. Even if the chiral superfield which we dualize involves an F-term, we can duali…
World-volume Effective Actions of Exotic Five-branes
Tetsuji Kimura, Shin Sasaki, Masaya Yata
We construct world-volume effective actions of exotic -branes in type IIA and IIB string theories. The effective actions are given in fully space-time covariant forms with t…
Gauged Linear Sigma Model with F-term for A-type ALE Space
Tetsuji Kimura, Masaya Yata
We construct yet another gauged linear sigma model for the -type ALE space. In our construction the toric data of the ALE space are manifest. Due to the $…
Family Unification via Quasi-Nambu-Goldstone Fermions in String Theory
Shun'ya Mizoguchi, Masaya Yata
Some of the supersymmetric nonlinear sigma models on exceptional groups (E7 or E8) are known to yield almost minimal necessary content of matter fields for phenomenological model b…
Chiral Zeromodes on Vortex-type Intersecting Heterotic Five-branes
Masaya Yata
We solve the gaugino Dirac equation on a smeared intersecting five-brane solution in E_8\times E_8 heterotic string theory to search for localized chiral zeromodes on the intersect…
Taub-NUT Crystal
Harunobu Imazato, Shun'ya Mizoguchi, Masaya Yata
We consider the Gibbons-Hawking metric for a three-dimensional periodic array of multi-Taub-NUT centers, containing not only centers with a positive NUT charge but also ones with a…
Note on Anomaly Cancellation on SO(32) heterotic 5-brane
Harunobu Imazato, Shun'ya Mizoguchi, Masaya Yata
We show that the gauge, gravitational (tangent-bundle) and their mixed anomalies arising from the localized modes near a 5-brane in the SO(32) heterotic string theory cancel with t…