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Related papers: Type IIA Pati-Salam Flux Vacua

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Intersecting D-brane model building often suffer from the unstabilized open-string moduli, leading to the unwanted massless adjoint scalars. In our previous work arXiv:2505.03664, this issue was resolved by employing the rigid D6-branes on…

High Energy Physics - Theory · Physics 2026-05-13 Adeel Mansha , Mudassar Sabir , Tianjun Li , Luyang Wang

We construct new Standard-like models on Type II orientifolds. In Type IIA theory on $\mathbf{T^6/(\Z_2\times \Z_2)}$ orientifold with intersecting D6-branes, we first construct a three-family trinification model where the $U(3)_C\times…

High Energy Physics - Theory · Physics 2008-11-26 Ching-Ming Chen , Tianjun Li , Dimitri V. Nanopoulos

We show that previous proposals to accommodate the MSSM with string theory N=0 non-supersymmetric compactifications coming from intersecting D6-branes may be made fully consistent with the cancellation of RR tadpoles. In this respect we…

High Energy Physics - Theory · Physics 2007-05-23 Emmanuel Floratos , Christos Kokorelis

We study the flux parameter spaces for semi-realistic supersymmetric Pati-Salam models in the AdS vacua on Type IIA orientifold and realistic supersymmetric Pati-Salam models in the Minkowski vacua on Type IIB orientifold. Because the…

High Energy Physics - Theory · Physics 2010-12-02 Ching-Ming Chen , Tianjun Li , Dimitri V. Nanopoulos

On the Type IIB toroidal T^6 orientifolds with generic flux compactifications, we conjecture that in generic supsersymmetric Minkowski vacua, at least one of the flux contributions to the seven-brane and D3-brane tadpoles is positive if the…

High Energy Physics - Theory · Physics 2011-07-19 Ching-Ming Chen , Shan Hu , Tianjun Li , Dimitri V. Nanopoulos

We construct a systematic method to build all the possible three-family ${\cal N}=1$ supersymmetric Pati-Salam models from Type IIA orientifolds on $\mathbb{T}^6/(\mathbb{Z}_2\times \mathbb{Z}_2)$ with intersecting D6-branes, in which the…

High Energy Physics - Theory · Physics 2022-08-09 Weikun He , Tianjun Li , Rui Sun

Generalizing three-family chiral fermion conditions to $I_{ac}=-(3+h)$ and $I_{ac'}=h$, with positive integer $h$, we extend the landscape of three-family ${\cal N}=1$ supersymmetric Pati-Salam models in a broader region. Differing from the…

High Energy Physics - Theory · Physics 2025-12-19 Tianjun Li , Qi Sun , Rui Sun , Lina Wu

We provide a systematic construction of three-family N=1 supersymmetric Pati-Salam models from Type IIA orientifolds on $\IT^6/(\IZ_2\times \IZ_2)$ with intersecting D6-branes. All the gauge symmetry factors $SU(4)_C\times SU(2)_L \times…

High Energy Physics - Theory · Physics 2009-09-17 Mirjam Cvetic , Tianjun Li , Tao Liu

We show that there exist supersymmetric Minkowski vacua on Type IIB toroidal orientifold with general flux compactifications where the RR tadpole cancellation conditions can be relaxed elegantly. Then we present a realistic Pati-Salam like…

High Energy Physics - Theory · Physics 2008-11-26 Ching-Ming Chen , Tianjun Li , Yan Liu , Dimitri V. Nanopoulos

Following the scanning methods of arXiv:1910.04530, we for the first time systematically construct the $N=1$ supersymmetric $SU(12)_C\times SU(2)_L\times SU(2)_R$ models, $SU(4)_C\times SU(6)_L\times SU(2)_R$ models, and $SU(4)_C\times…

High Energy Physics - Theory · Physics 2023-04-28 Tianjun Li , Adeel Mansha , Rui Sun

We construct supersymmetric Pati-Salam flux vacua in AdS from intersecting D6-branes on T^6/(Z_2 x Z_2'). The models constructed have three generations of MSSM matter plus right-handed neutrinos. Because the cycles wrapped by the D-branes…

High Energy Physics - Theory · Physics 2011-06-14 Ching-Ming Chen , Tianjun Li , Van Eric Mayes , Dimitri V. Nanopoulos

Employing new scanning methods, we revisit the systematic construction of three-family $N=1$ supersymmetric Pati-Salam models in Type IIA orientifolds on ${\bf T}^6/(\mathbb Z_2\times \mathbb Z_2)$ with intersecting D6-branes. Arising from…

High Energy Physics - Theory · Physics 2020-06-23 Tianjun Li , Adeel Mansha , Rui Sun

We show that there exist supersymmetric Minkowski vacua on Type IIB toroidal orientifold with general flux compactifications where the RR tadpole cancellation conditions can be relaxed and the Freed-Witten anomaly can be cancelled…

High Energy Physics - Theory · Physics 2008-12-13 Ching-Ming Chen , Tianjun Li , Dimitri V. Nanopoulos

We construct new three-family ${\cal N}=1$ supersymmetric Pati-Salam models from intersecting D6-branes with original gauge group ${\rm U}(4)_C \times {\rm USp}(2)_L \times {\rm U}(2)_R$ on a Type IIA $\mathbb{T}^6/(\mathbb{Z}_2\times…

High Energy Physics - Theory · Physics 2024-04-01 Adeel Mansha , Tianjun Li , Mudassar Sabir , Lina Wu

Intersecting D6-brane models without discrete torsion typically suffer from unstabilized open string moduli, arising from D-brane positions and Wilson lines. These moduli generate additional massless adjoint fields, obstructing the…

High Energy Physics - Theory · Physics 2025-09-05 Adeel Mansha , Mudassar Sabir , Tianjun Li , Luyang Wang

We study the effects of adding RR, NS and metric fluxes on a T^6/(\Omega (-1)^{F_L} I_3) Type IIA orientifold. By using the effective flux-induced superpotential we obtain Minkowski or AdS vacua with broken or unbroken supersymmetry. In the…

High Energy Physics - Theory · Physics 2009-11-11 P. G. Camara , A. Font , L. E. Ibanez

We construct new semi-realistic Type IIB flux vacua on $Z_2\times Z_2$ orientifolds with three- and four- Standard Model (SM) families and up to three units of quantized flux. The open-string sector is comprised of magnetized D-branes and…

High Energy Physics - Theory · Physics 2008-11-26 Mirjam Cvetic , Tianjun Li , Tao Liu

We construct, for the first time, a three-family $\mathcal{N}=1$ supersymmetric Pati-Salam model from rigid intersecting D6-branes on a factorizable $\mathbb{T}^6/(\mathbb{Z}_2\times \mathbb{Z}_2')$ orientifold with discrete torsion. The…

High Energy Physics - Theory · Physics 2025-07-01 Adeel Mansha , Mudassar Sabir , Tianjun Li , Luyang Wang

We study the possible phenomenology of a three-family Pati-Salam model constructed from intersecting D6-branes in Type IIA string theory on the T^6/(Z2 x Z2) orientifold with some desirable semi-realistic features. In the model, tree-level…

High Energy Physics - Phenomenology · Physics 2008-11-26 Ching-Ming Chen , Tianjun Li , V. E. Mayes , D. V. Nanopoulos

A supersymmetric Pati-Salam model with wrapping number equal to 5 has been constructed in Type IIA orientifolds on $\mathbf{T}^6/(\mathbb{Z}_2\times \mathbb{Z}_2)$ with intersecting D6-branes recently. In particular, the string-scale gauge…

High Energy Physics - Theory · Physics 2022-09-23 Mudassar Sabir , Tianjun Li , Adeel Mansha , Xiao-Chuan Wang
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