4 papers
-ball superradiance: Analytical approach
Guo-Dong Zhang, Shuang-Yong Zhou, Meng-Fan Zhu
It was recently discovered that waves scattering off a -ball can extract energy from it. We present an analytical treatment of this process by adopting a multi-step function app…
Superradiance of Friedberg-Lee-Sirlin Solitons
Guo-Dong Zhang, Cheng-Hao Li, Qi-Xin Xie +1
It has recently been pointed out that rotation in internal space can induce superradiance. We explore this effect in non-topological solitons of the two-field Friedberg-Lee-Sirlin…
Spinning -ball Superradiance in 3+1D
Guo-Dong Zhang, Fu-Ming Chang, Paul M. Saffin +2
Recently, it has been found that a -ball can amplify waves incident upon it, due to rotation in the internal space and the interaction of the two modes in the complex scalar fie…
Capping the positivity cone: dimension-8 Higgs operators in the SMEFT
Qing Chen, Ken Mimasu, Tong Arthur Wu +2
SMEFT Wilson coefficients are subject to various positivity bounds in order to be consistent with the fundamental principles of S-matrix. Previous bounds on dimension-8 SMEFT opera…