130 citations · 746 across the 33 of their papers we have counts for
33 papers
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…
Long-baseline quantum sensor network as dark matter haloscope
Min Jiang, Taizhou Hong, Dongdong Hu +8
Ultralight dark photons constitute a well-motivated candidate for dark matter. A coherent electromagnetic wave is expected to be induced by dark photons when coupled with Standard-…
Photon Ring Astrometry for Superradiant Clouds
Yifan Chen, Xiao Xue, Richard Brito +1
Gravitational atoms produced from the superradiant extraction of rotational energy of spinning black holes can reach energy densities significantly higher than that of dark matter,…
Lotka-Volterra Models for Extraterrestrial Self-Replicating Probes
Yifan Chen, Jiayi Ni, Yen Chin Ong
A sufficiently advanced extraterrestrial civilization can send out a swarm of self-replicating probes for space exploration. Given the fast-growing number of such a probe, even if…
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…
Superradiant evolution of the shadow and photon ring of Sgr A
Yifan Chen, Rittick Roy, Sunny Vagnozzi +1
Ultralight bosons can affect the dynamics of spinning black holes (BHs) via superradiant instability, which can lead to a time evolution of the supermassive BH shadow. We study pro…
Some new results about -trinomial coefficients
Yifan Chen, Chang Xu, Xiaoxia Wang
In this paper, we present several new congruences on the -trinomial coefficients introduced by Andrews and Baxter. A new congruence on sums of central -binomial coefficients…
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…
Testing the ALP-photon coupling with polarization measurements of Sagittarius A*
Guan-Wen Yuan, Ziqing Xia, Chengfeng Tang +5
Ultra-light bosons such as axions or axion-like particles (ALPs), are promising candidates to solve the dark matter problem. A unique way to detect such ALPs is to search for the p…
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…
A two-dimensional family of surfaces of general type with and
Yifan Chen, YongJoo Shin
We study the construction of complex minimal smooth surfaces of general type with and . Inoue constructed the first examples of such surfaces, which can be…
Logarithmic loop corrections, moduli stabilisation and de Sitter vacua in string theory
Ignatios Antoniadis, Yifan Chen, George K. Leontaris
We study string loop corrections to the gravity kinetic terms in type IIB compactifications on Calabi-Yau threefolds or their orbifold limits, in the presence of -branes and or…
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…
Moduli Stabilization and Inflation in Type IIB/F-theory
Ignatios Antoniadis, Yifan Chen, George K. Leontaris
In the first part of this talk, a short overview of the ongoing debate on the existence of de Sitter vacua in string theory is presented. In the second part, the moduli stabilisati…
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…
Inflation from the internal volume in type IIB/F-theory compactification
Ignatios Antoniadis, Yifan Chen, George K. Leontaris
We study cosmological inflation within a recently proposed framework of perturbative moduli stabilisation in type IIB/F theory compactifications on Calabi-Yau threefolds. The stabi…
Stripping a supermultiplet of all but one scalar: a microscopic view
Karim Benakli, Yifan Chen
We explain how a single scalar degree of freedom can be obtained from projecting out all the other components of a chiral superfield using simple operators in the microscopic theor…
Perturbative moduli stabilisation in type IIB/F-theory framework
Ignatios Antoniadis, Yifan Chen, George K. Leontaris
We propose a new mechanism of (geometric) moduli stabilisation in type IIB/F-theory four-dimensional compactifications on Calabi-Yau manifolds, in the presence of 7-branes, that do…