113 citations · 452 across the 19 of their papers we have counts for
19 papers
Model of the quintessence axion
Sudhakantha Girmohanta, Yu-Cheng Qiu, Jin-Wei Wang +1
We construct a model of the quintessence axion based on a gauged chiral symmetry and an additional flat fifth dimension. The required high qualities are guaranteed by the br…
High-quality axions in a class of chiral gauge theories
Yu-Cheng Qiu, Jin-Wei Wang, Tsutomu T. Yanagida
We show that there are many candidates for the quintessence and/or the QCD axions in a class of chiral gauge theories. Their qualities are high enough to serve as the dark e…
Electroweak Axion as the Fuzzy Dark Matter -- A Proposal for the Mixed Fuzzy and Cold Dark Matters
Yu-Cheng Qiu, Tsutomu T. Yanagida
The electroweak axion is identified with the fuzzy dark matter of a mass --. The model predicts two components of dark matter, one is ultralig…
Probing The Neutrino Sector via A Statistical Approach
Yu-Cheng Qiu, Hui-Yu Zhu
We apply the idea of landscape (motivated by string theory) to study the statistical nature of parameters/couplings in the standard model of strong and electroweak interactions. Fo…
The Hubble Constant in the Axi-Higgs Universe
Leo WH Fung, Lingfeng Li, Tao Liu +3
The CDM model provides an excellent fit to the CMB data. However, a statistically significant tension emerges when its determination of the Hubble constant is compared to…
Axi-Higgs Cosmology
Leo WH Fung, Lingfeng Li, Tao Liu +3
If the electroweak Higgs vacuum expectation value in early universe is higher than its present value GeV, the Li puzzle in BBN and the CMB/CDM tens…
Standard Model from A Supergravity Model with a Naturally Small Cosmological Constant
Shing Yan Li, Yu-Cheng Qiu, S. -H. Henry Tye
Guided by the naturalness criterion for an exponentially small cosmological constant, we present a string theory motivated 4-dimensional non-linear supergravity mod…
Linking the Supersymmetric Standard Model to the Cosmological Constant
Yu-Cheng Qiu, S. -H. Henry Tye
String theory has no parameter except the string scale , so the Planck scale , the supersymmetry-breaking scale, the EW scale as well as the vacuum…
Schwinger effect in compact space: a real time calculation
Yue Qiu, Lorenzo Sorbo
We compute the discharging rate of a uniform electric field due to Schwinger pair production in -dimensional scalar electrodynamics with a compact dimension of radius . O…
Black Hole and Cosmological Particle Production in Schwarzschild de Sitter
Yue Qiu, Jennie Traschen
We compute the spectra and total fluxes of quantum mechanically produced particles crossing the black hole and cosmological horizons in Schwarzschild de Sitter (SdS). Particle stat…
Schottky Anomaly of deSitter Black Holes
Jack Dinsmore, Patrick Draper, David Kastor +2
The interplay of black hole and cosmological horizons introduces distinctive thermodynamic behavior for deSitter black holes, including well-known upper bounds for the mass and ent…
Role of Bloch Waves in baryon-number violating processes
Yu-Cheng Qiu, S. -H. Henry Tye
In the Bloch-wave approach to estimate the baryon-number-violating scattering cross section in the standard electroweak theory in the laboratory, we clarify the relation between th…
Amplification of the coupling strength in a hybrid quantum system
Wei Xiong, Yueyin Qiu, Lian-Ao Wu +1
Realization of strong coupling between two different quantum systems is important for fast transferring quantum information between them, but its implementation is difficult in som…
Energy dynamics in a generalized compass chain
Yu-Cheng Qiu, Qing-Qiu Wu, Wen-Long You
We investigate the energy dynamics in a generalized compass chain under an external magnetic field. We show that the energy current operators act on three contiguous sites in the a…
Quantum phase transitions in a generalized compass chain with three-site interactions
Wen-Long You, Yu-Cheng Qiu, Andrzej M. Oleś
We consider a class of one-dimensional compass models with XYZYZX-type of three-site exchange interaction in an external magnetic field. We present the exact solution derived by…
Single-photon-driven high-order sideband transitions in an ultrastrongly coupled circuit quantum electrodynamics system
Zhen Chen, Yimin Wang, Tiefu Li +8
We report the experimental observation of high-order sideband transitions at the single-photon level in a quantum circuit system of a flux qubit ultrastrongly coupled to a coplanar…
Four-junction superconducting circuit
Yueyin Qiu, Wei Xiong, Xiao-Ling He +2
We develop a theory for the quantum circuit consisting of a superconducting loop interrupted by four Josephson junctions and pierced by a magnetic flux (either static or time-depen…
Cross-Kerr effect on an optomechanical system
Wei Xiong, Da-Yu Jin, Yueyin Qiu +2
We study cross-Kerr (CK) effect on an optomechanical system driven by two-tone fields. We show that in the presence of the CK effect, a bistable behavior of the mean photon number…
Coupling spin ensembles via superconducting flux qubits
Yueyin Qiu, Wei Xiong, Lin Tian +1
We study a hybrid quantum system consisting of spin ensembles and superconducting flux qubits, where each spin ensemble is realized using the nitrogen-vacancy centers in a diamond…