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We consider a combination of perturbative and non-perturbative corrections in K\"ahler moduli stabilizations in the configuration of three magnetised intersecting D7 branes in the type-IIB/F theory, compactified on the 6d T^6/Z_N orbifold…

广义相对论与量子宇宙学 · 物理学 2023-08-11 Abhijit Let , Arunoday Sarkar , Chitrak Sarkar , Buddhadeb Ghosh

We propose a new mechanism of (geometric) moduli stabilisation in type IIB/F-theory four-dimensional compactifications on Calabi-Yau manifolds, in the presence of 7-branes, that does not rely on non-perturbative effects. Complex structure…

高能物理 - 理论 · 物理学 2018-10-02 Ignatios Antoniadis , Yifan Chen , George K. Leontaris

We study K\"ahler moduli stabilizations in semi-realistic magnetized D-brane models based on $ Z_2\times Z_2'$ toroidal orbifolds. In type IIB compactifications, 3-form fluxes can stabilize the dilaton and complex structure moduli fields,…

高能物理 - 理论 · 物理学 2017-08-02 Hiroyuki Abe , Tatsuo Kobayashi , Keigo Sumita , Shohei Uemura

In the first part of this talk, a short overview of the ongoing debate on the existence of de Sitter vacua in string theory is presented. In the second part, the moduli stabilisation and inflation are discussed in the context of type…

高能物理 - 理论 · 物理学 2019-01-18 Ignatios Antoniadis , Yifan Chen , George K. Leontaris

We derive an $\alpha=1/3$ - attractor potential of slow-roll inflation in the geometric set-up of three intersecting $D7$ branes under $T^6/Z_N$ type of $CY_3$-compactification within type IIB/F theory with some near-conifold regions. The…

高能物理 - 理论 · 物理学 2024-05-01 Arunoday Sarkar , Buddhadeb Ghosh

We study cosmological inflation within a recently proposed framework of perturbative moduli stabilisation in type IIB/F theory compactifications on Calabi-Yau threefolds. The stabilisation mechanism utilises three stacks of magnetised…

高能物理 - 理论 · 物理学 2019-04-05 Ignatios Antoniadis , Yifan Chen , George K. Leontaris

We investigate the effects of inclusion of charged tachyonic open-string scalars in the perturbative and the non-perturbative K\"ahler moduli stabilizations in a geometry of three intersecting magnetized D7-brane stacks in type-IIB/F theory…

高能物理 - 唯象学 · 物理学 2024-09-17 Abhijit Let , Buddhadeb Ghosh

The unwinding inflation mechanism is studied in a type IIB flux compactification where all moduli are stabilized using flux, non-perturbative effects, and the leading alpha' corrections of the large volume scenario. We consider the…

高能物理 - 理论 · 物理学 2017-12-14 Juan Diaz Dorronsoro , Marjorie Schillo

In this paper we present a two-field inflation model, which distinguishes itself with a non-canonical kinetic lagrangian and comes from the large volume approach to the moduli stabilization in flux compactification of type IIB superstring…

高能物理 - 理论 · 物理学 2014-11-18 Huan-Xiong Yang , Hong-Liang Ma

We study closed-string moduli stabilization in Higgs-otic inflation in Type IIB orientifold backgrounds with fluxes. In this setup large-field inflation is driven by the vacuum energy of mobile D7-branes. Imaginary selfdual (ISD) three-form…

高能物理 - 理论 · 物理学 2017-03-08 Sjoerd Bielleman , Luis E. Ibanez , Francisco G. Pedro , Irene Valenzuela , Clemens Wieck

We analyze string-theoretic large-field inflation in the regime of spontaneously-broken supergravity with conventional moduli stabilization by fluxes and non-perturbative effects. The main ingredient is a shift-symmetric Kahler potential,…

高能物理 - 理论 · 物理学 2014-08-26 Arthur Hebecker , Sebastian C. Kraus , Lukas T. Witkowski

We revisit the two-stage procedure for moduli stabilization in Type IIB orientifolds at light K\"ahler-modulus limit. In view of the necessity to keep the K\"ahler geometry structure of the moduli space during the stabilization, we define a…

高能物理 - 理论 · 物理学 2007-05-23 Huan-Xiong Yang

Inflationary potentials are investigated for specific models in type IIB string theory via flux compactification. As concrete models, we investigate several cases where the internal spaces are weighted projective spaces. The models we…

高能物理 - 理论 · 物理学 2011-03-15 Sunggeun Lee , Soonkeon Nam

We identify the low-energy K\"ahler potential of warped F-theory/IIB flux compactifications whose light spectrum includes universal, K\"ahler, axionic and mobile D3-brane moduli. The derivation is based on four-dimensional local…

高能物理 - 理论 · 物理学 2015-06-23 Luca Martucci

The properties of the effective scalar potential are studied in the framework of type IIB string theory, taking into account perturbative and non-perturbative corrections. The former modify the K\"ahler potential and include $\alpha'$ and…

高能物理 - 理论 · 物理学 2020-10-07 Vasileios Basiouris , George K. Leontaris

We propose a new type of K\"ahler moduli stabilization mechanisms in type IIB superstring theory on Calabi-Yau manifolds with the positive Euler number. The overall K\"ahler modulus can be perturbatively stabilized by radiative corrections…

高能物理 - 理论 · 物理学 2018-05-16 Tatsuo Kobayashi , Naoya Omoto , Hajime Otsuka , Takuya H. Tatsuishi

We study the scalar potential in supersymmetric (orientifolded) Calabi Yau compactifications of Type IIB theory. We present a new mechanism to stabilize all closed string moduli at leading order in \alpha^{'} by introducing consistently…

高能物理 - 理论 · 物理学 2009-11-11 Maria Pilar Garcia del Moral

We study slow-roll inflation model controlled by the modular flavor symmetry. In the model, the modulus field plays a role of inflaton and the introduction of the stabilizer field coupled to a modular form in the superpotential produces the…

高能物理 - 唯象学 · 物理学 2023-07-26 Yoshihiko Abe , Tetsutaro Higaki , Fumiya Kaneko , Tatsuo Kobayashi , Hajime Otsuka

We study the effect of adding charged matter fields to both D3 and D7 branes in type IIB string theory compactification with fluxes. Generically, charged matter fields induce additional terms to the Kahler form, the superpotential and the…

高能物理 - 理论 · 物理学 2008-11-26 A. Awad , N. Chamoun , S. Khalil

We study the consistency of large-field inflation in low-energy effective field theories of string theory. In particular, we focus on the stability of K\"ahler moduli in the particularly interesting case where the non-perturbative…

高能物理 - 理论 · 物理学 2017-04-05 Fabian Ruehle , Clemens Wieck
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