167 citations · 637 across the 50 of their papers we have counts for
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Classification of 2D Fermionic Systems with a Flavor Symmetry
Chi-Ming Chang, Jin Chen, Fengjun Xu
We classify superfusion categories describing two-dimensional fermionic systems equipped with the universal fermion-parity symmetry, implemented by a topological defect line (TDL)…
The Hitchhiker's Guide to 4d Superconformal Field Theories
Mohammad Akhond, Guillermo Arias-Tamargo, Alessandro Mininno +4
Superconformal field theory with supersymmetry in four dimensional spacetime provides a prime playground to study strongly coupled phenomena in quantum field theory…
On TCS manifolds and 4D Emergent Strings
Fengjun Xu
In this note, we study the Swampland Distance Conjecture in TCS manifold compactifications of M-theory. In particular, we are interested in testing a refined version -- the E…
The Green-Schwarz Mechanism and Geometric Anomaly Relations in 2d (0,2) F-theory Vacua
Timo Weigand, Fengjun Xu
We study the structure of gauge and gravitational anomalies in 2d N=(0,2) theories obtained by compactification of F-theory on elliptically fibered Calabi-Yau 5-folds. Abelian gaug…
D-brane Superpotentials and Ooguri-Vafa Invariants of Compact Calabi-Yau Threefolds
Feng-Jun Xu, Fu-Zhong Yang
We calculate the D-brane superpotentials for two non-Fermat type compact Calabi-Yau manifolds which are the hypersurfaces of the weighed projective spaces in type II string theory.…
Ooguri-Vafa Invariants and Off-shell Superpotentials of Type II/F-theory compactification
Feng-Jun Xu, Fu-Zhong Yang
In this paper, we make a further step of \cite{Feng} and calculate off-shell superpotential of two Calabi-Yau manifold with three parameters by integrating the period of subsystem.…
Off-shell D-Brane/F-Theory Effective Superpotentials and Ooguri-Vafa Invariants of Several Compact Calabi-Yau Manifolds
Shi Cheng, Feng-Jun Xu, Fu-Zhong Yang
According to the generalized GKZ system for CY manifold with brane and the open-closed Mirror map, We calculate the off-shell D-Brane/F-Theory effective superpotentials and Ooguri-…
Type II/F-theory Superpotentials and Ooguri-Vafa Invariants of Compact Calabi-Yau Threefolds with Three Deformations
Feng-Jun Xu, Fu-Zhong Yang
We calculate the D-brane superpotentials for two Calabi-Yau manifolds with three deformations by the generalized hypergeometric GKZ systems, which give rise to the flux superpotent…