130 citations · 746 across the 33 of their papers we have counts for
13 papers · 1 filter
Black Holes as Fermion Factories
Yifan Chen, Xiao Xue, Vitor Cardoso
Ultralight bosons near rotating black holes can undergo significant growth through superradiant energy extraction, potentially reaching field values close to the Planck scale and t…
Birefringence Tomography for Axion Cloud
Yifan Chen, Chunlong Li, Yosuke Mizuno +5
An axion cloud surrounding a supermassive black hole can be naturally produced through the superradiance process. Its existence can be examined by the axion induced birefringence e…
Dissecting axion and dark photon with a network of vector sensors
Yifan Chen, Min Jiang, Jing Shu +2
We develop formalisms for a network of vector sensors, sensitive to certain spatial components of the signals, to identify the properties of a light axion or a dark photon backgrou…
Earth Shielding and Daily Modulation from Electrophilic Boosted Dark Particles
Yifan Chen, Bartosz Fornal, Pearl Sandick +4
Boosted dark particles of astrophysical origin can lead to nonstandard nuclear or electron recoil signals in direct detection experiments. %It has been shown that this interpretati…
Stringent axion constraints with Event Horizon Telescope polarimetric measurements of M87
Yifan Chen, Yuxin Liu, Ru-Sen Lu +5
The hitherto unprecedented angular resolution of the Event Horizon Telescope (EHT) has created exciting opportunities in the search for new physics. Recently, the linear polarizati…
Axion Haloscope Array With Symmetry
Yifan Chen, Minyuan Jiang, Yiqiu Ma +2
We generalize the recently proposed -symmetric axion haloscope to a larger array with more -symmetric structures. By broadening the response bandwidth…
Sun Heated MeV-scale Dark Matter and the XENON1T Electron Recoil Excess
Yifan Chen, Ming-Yang Cui, Jing Shu +3
The XENON1T collaboration reported an excess of the low-energy electron recoil events between 1 and 7 keV. We explore the possibility to explain such an anomaly by the MeV-scale da…
Probing Axions with Event Horizon Telescope Polarimetric Measurements
Yifan Chen, Jing Shu, Xiao Xue +2
With high spatial resolution, polarimetric imaging of a supermassive black hole, like M87 or Sgr A, by the Event Horizon Telescope can be used to probe the existenc…
An Emergent Higgs Alignment
Karim Benakli, Yifan Chen, Gaëtan Lafforgue-Marmet
We explain how an R-symmetry allows alignment of the vacuum expectation value and the mass eigenstates in the Higgs bosons squared-mass matrix. More important, we discuss…
Predicting Alignment in a Two Higgs Doublet Model
Karim Benakli, Yifan Chen, Gaëtan Lafforgue-Marmet
We show that a non-abelian global acting on the quartic part of the two Higgs Doublet Model leads, at tree-level, to an automatic alignment without decoupling. An example…
Stochastic gravitational waves from spin-3/2 fields -- Hunting SUSY in the sky
Karim Benakli, Yifan Chen, Peng Cheng +1
Stochastic gravitational waves can be produced during the preheating when out-of-equilibrium particles are produced with an anisotropic stress-tensor. We discuss the case where the…
R-symmetry for Higgs alignment without decoupling
Karim Benakli, Yifan Chen, Gaëtan Lafforgue-Marmet
It has been observed that an automatic alignment without decoupling is predicted at tree-level in a Two-Higgs Doublet Model (2HDM) with extended supersymmetry in the gauge and Higg…
A Minimal Model of Gravitino Dark Matter
Karim Benakli, Yifan Chen, Emilian Dudas +1
Motivated by the absence of signals of new physics in both searches for new particles at LHC and for a Weakly Interacting Massive Particle (WIMP) dark matter candidate, we consider…