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43

Sep 23, 2013
09/13

by
Masaya Yata

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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 intersection. The background is chosen to depend on the full two-dimensional overall transverse coordinates to the branes. Under some appropriate boundary conditions, we compute the complete spectrum of zeromodes to find that, among infinite towers of Fourier modes, there exist only three localized normalizable zeromodes, one...

Source: http://arxiv.org/abs/1111.6015v1

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2.0

Jun 30, 2018
06/18

by
Tetsuji Kimura; Masaya Yata

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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 dualize it by virtue of the property of chiral superfields. We apply the duality transformation rule of the neutral chiral superfield to the ${\cal N}=(4,4)$ gauged linear sigma model for five-branes. We also investigate the duality transformation rule of the charged chiral superfield in the ${\cal N} = (4,4)$ gauged...

Topic: High Energy Physics - Theory

Source: http://arxiv.org/abs/1406.0087

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3.0

Jun 30, 2018
06/18

by
Tetsuji Kimura; Masaya Yata

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We construct yet another ${\mathcal N}=(4,4)$ gauged linear sigma model for the $A_N$-type ALE space. In our construction the toric data of the ALE space are manifest. Due to the $SU(2)_R$ symmetry, the F-term is automatically determined. The toric data, which govern the K\"{a}hler structures of the ALE space, are embedded into $U(1)$ charges of charged hypermultiplets. The F-term is also inevitable to determine the complex structures of the ALE space. In the IR limit, we obtain the...

Topic: High Energy Physics - Theory

Source: http://arxiv.org/abs/1402.5580

2
2.0

Jun 29, 2018
06/18

by
Shin Sasaki; Masaya Yata

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We study T-duality chains of five-branes in heterotic supergravity where the first order $\alpha'$-corrections are present. By performing the $\alpha'$-corrected T-duality transformations of the heterotic NS5-brane solutions, we obtain the KK5-brane and the exotic $5^2_2$-brane solutions associated with the symmetric, the neutral and the gauge NS5-branes. We find that the Yang-Mills gauge field in these solutions satisfies the self-duality condition in the three- and two-dimensional transverse...

Topic: High Energy Physics - Theory

Source: http://arxiv.org/abs/1608.01436

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48

Sep 18, 2013
09/13

by
Shun'ya Mizoguchi; Masaya Yata

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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 building, including three chiral families and a Higgs multiplet. We explore a possible realization of such a family unification in heterotic string theory, where the spontaneously broken symmetry that we focus on is the one associated with the change of global orientation of the spin bundle embedded in the gauge...

Source: http://arxiv.org/abs/1211.6135v1

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87

Jul 20, 2013
07/13

by
Harunobu Imazato; Shun'ya Mizoguchi; Masaya Yata

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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 negative NUT charge. The latter are regarded as representing the asymptotic form of the Atiyah-Hitchin metric. The periodic arrays of Taub-NUT centers have close parallels with ionic crystals, where the Gibbons-Hawking potential plays the role of the Coulomb static potential of the ions, and are similarly classified...

Source: http://arxiv.org/abs/1107.3557v1

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5.0

Jun 30, 2018
06/18

by
Tetsuji Kimura; Shin Sasaki; Masaya Yata

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We construct world-volume effective actions of exotic $5^2_2$-branes in type IIA and IIB string theories. The effective actions are given in fully space-time covariant forms with two Killing vectors associated with background isometries. The effective theories are governed by the six-dimensional $\mathcal{N}=(2,0)$ tensor multiplet and $\mathcal{N}=(1,1)$ vector multiplet, respectively. Performing the S-duality transformation to the $5^2_2$-brane effective action in type IIB string theory, we...

Topic: High Energy Physics - Theory

Source: http://arxiv.org/abs/1404.5442

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4.0

Jun 29, 2018
06/18

by
Tetsuji Kimura; Shin Sasaki; Masaya Yata

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We study the world-volume effective action of an exotic five-brane, known as the M-theory 5${}^3$-brane (M5${}^3$-brane) in eleven dimensions. The supermultiplet of the world-volume theory is the $\mathcal{N} = (2, 0)$ tensor multiplet in six dimensions. The world-volume action contains three Killing vectors $\hat{k}_{\hat{I}} {}^M \ (\hat{I} =1,2,3)$ associated with the $U(1)^3$ isometry. We find the effective T-duality rule for the eleven-dimensional backgrounds that transforms the M5-brane...

Topic: High Energy Physics - Theory

Source: http://arxiv.org/abs/1601.05589

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44

Sep 19, 2013
09/13

by
Harunobu Imazato; Shun'ya Mizoguchi; Masaya Yata

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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 the anomaly inflow from the bulk with the use of the Green-Schwarz mechanism on the brane, similarly to the E_8 x E_8 5-brane case. We also compare our result with Mourad's analysis performed in the small-instanton limit.

Source: http://arxiv.org/abs/1010.1640v2

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9.0

Jun 30, 2018
06/18

by
Tetsuji Kimura; Shin Sasaki; Masaya Yata

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We investigate a five-branes interpretation of hyper-K\"{a}hler geometry with torsion (HKT). This geometry is obtained by conformal transformation of the Taub-NUT space which represents a Kaluza-Klein five-brane. This HKT would represent an NS5-brane on the Taub-NUT space. In order to explore the HKT further, we compactify one transverse direction, and study the $O(2,2;{\mathbb Z}) = SL(2,{\mathbb Z}) \times SL(2,{\mathbb Z})$ monodromy structure associated with two-torus. Performing the...

Topic: High Energy Physics - Theory

Source: http://arxiv.org/abs/1411.3457