Conveners
New Developments in String Theory
- Bin Chen (Peking University)
New Developments in String Theory
- Bin Chen (Peking University)
New Developments in String Theory
- Gary Shiu (University of Wisconsin-Madison)
We derive 4D $\mathcal{N}=1$ supersymmetric effective theory from 10D non-Abelian Dirac-Born-Infeld action compactified on a six dimensional tori with magnetic flux on the D-branes.
For the 10D action, we use a symmetrized trace prescription and focus on the bosonic part.
4D chiral fermions can arise via index theorem for the background flux.
The gauge coupling and the matter K\"{a}hler...
We develop an integrability-based framework to compute structure constants of two subdeterminant operators and a single-trace non-BPS operator in ABJM theory in the planar limit. In this part of work I will introduce them at weak coupling using a relation to an integrable spin chain. We first develop a nested Bethe ansatz for an alternating SU(4) spin chain that describes single-trace...
We study correlation functions of D-branes and a supergravity mode in AdS, which are dual to structure constants of two sub-determinant operators with large charge and a BPS single-trace operator. Our approach is inspired by the large charge expansion of CFT and resolves puzzles and confusions in the literature on the holographic computation of correlation functions of heavy operators. In...
In this paper, we study 5d N = 1 Sp(N) gauge theory with N_f flavors based on 5-brane web diagram with O5-plane. On the one hand, we discuss Seiberg-Witten curve based on the dual graph of the 5-brane web with O5-plane. On the other hand,we compute the Nekrasov partition function based on the topological vertex formalism with O5-plane. Rewriting it in terms of profile functions, we obtain the...
We embed aligned natural inflation and stabilize moduli in Large Volume Scenario. Scalar perturbation, weak gravity conjecture and Kahler condition of internal geometry constrains the model in interesting ways.
We investigate the vacuum structure of four-dimensional effective theory arising from Type IIB flux compactifications on a mirror of the rigid Calabi-Yau threefold, corresponding to a T-dual of the DeWolfe-Giryavets-Kachru-Taylor model in Type IIA flux compactifications. By analyzing the vacuum structure of this interesting corner of string landscape, it turns out that there exist...
In this talk, I will introduction the problem of realizing de Sitter space in string compactifications, especially the proposal by Kachru, Kallosh, Linde and Trivedi (KKLT). We analyze to which extent the KKLT proposal for the construction of de Sitter vacua in string theory is quantitatively controlled. I will then explain why, according our recent analysis, extended singularities in the bulk...
We discuss 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 $SU(4)_C\times SU(2)_L\times SU(6)_R$ models from the Type IIA orientifolds on $T^6/(\mathbb{Z}_2\times \mathbb{Z}_2)$ with intersecting D6-branes. These gauge symmetries can be broken down to the Pati-Salam gauge symmetry $SU(4)_C\times SU(2)_L \times SU(2)_R$...
We use machine learning to approximate Calabi-Yau and SU(3)-structure metrics, including for the first time complex structure moduli dependence. Our new methods furthermore improve existing numerical approximations in terms of accuracy and speed. Knowing these metrics has numerous applications, ranging from computations of crucial aspects of the effective field theory of string...
With the advent of the string landscape, the realisation of the Standard Model in general string theory compactifications to 4D has become a primary focus. This talk concerns novel constructions of the Standard Model in global set-ups of type IIB Calabi-Yau compactifications. We argue that the Standard Model quiver can be embedded into compact Calabi-Yau geometries through orientifolded...
The mild form of the Weak Gravity Conjecture states that quantum or higher-derivative corrections should decrease the mass of large, extremal, charged black holes at fixed charge. This allows extremal black holes to decay, unless protected by a symmetry (such as supersymmetry). This conjecture can be reformulated as an integrated condition on the effective stress tensor capturing the effect of...
The statistics of the supersymmetry breaking scale in the string landscape has been extensively studied in the past finding either a power-law behaviour induced by uniform distributions of F-terms or a logarithmic distribution motivated by dynamical supersymmetry breaking. These studies focused mainly on type IIB flux compactifications but did not systematically incorporate the Kähler moduli....
