25 citations · 118 across the 10 of their papers we have counts for
10 papers
The geometric deformation of curved algebras and Lie algebroids
Xiaoyi Cui
While algebras are fundamental structures in differential geometry and mathematical physics, the geometric information encoded in such structures is often implicit. We a…
Final state Sommerfeld effect on dark matter relic abundance
Xiaoyi Cui, Feng Luo
If the annihilation products of dark matter (DM) are non-relativistic and if there is some long-range force between them, there can be Sommerfeld effect for the final state particl…
A holography theory of Poisson sigma model and deformation quantization
Xiaoyi Cui, Chenchang Zhu
We construct a Chern-Simons type of theory using the algebra encoded by a Poisson structure on arbitrary Riemann surfaces with boundaries. A deformation quantization wit…
Anomalies of Minimal N=(0, 1) and N=(0, 2) Sigma Models on Homogeneous Spaces
Jin Chen, Xiaoyi Cui, Mikhail Shifman +1
We study chiral anomalies in and two-dimensional minimal sigma models defined on generic homogeneous spaces . Such minimal theories contain only (…
On Isometry Anomalies in Minimal N=(0,1) and N=(0,2) Sigma Models
Jin Chen, Xiaoyi Cui, Mikhail Shifman +1
The two-dimensional minimal supersymmetric sigma models with homogeneous target spaces and chiral fermions of the same chirality are revisited. We demonstrate that the Moore-…
N=(0, 2) Deformation of (2, 2) Sigma Models: Geometric Structure, Holomorphic Anomaly and Exact Beta Functions
Jin Chen, Xiaoyi Cui, Mikhail Shifman +1
We study N=(0,2) deformed (2,2) two-dimensional sigma models. Such heterotic models were discovered previously on the world sheet of non-Abelian strings supported by certain four-d…
Revisiting the Annihilation Corrections in Non-leptonic Decays within QCD Factorization
Qin Chang, Xiao-Wei Cui, Lin Han +1
Motivated by the recent measurements of non-leptonic decays by CDF and LHCb collaborations, especially the large , we revisit the hard…
N=(0,2) Deformation of CP(1) Model: Two-dimensional Analog of N=1 Yang-Mills Theory in Four Dimensions
Xiaoyi Cui, M. Shifman
We consider two-dimensional sigma models with the CP(1) target space. A minimal model of this type has one left-handed fermion. Nonminimal extensions contain, i…
N=(0,2) Supersymmetry and a Nonrenormalization Theorem
Xiaoyi Cui, M. Shifman
In this paper we continue the study of perturbative renormalizations in an supersymmetric model. Previously we analyzed one-loop graphs in the heterotically def…
Perturbative Aspects of Heterotically Deformed CP(N-1) Sigma Model. I
Xiaoyi Cui, M. Shifman
In this paper we begin the study of renormalizations in the heterotically deformed N=(0,2) CP(N-1) sigma models. In addition to the coupling constant g^2 of the undeformed N=(2,2)…