5 papers
Suppressed Quantum Effects of Weakly Coupled Waves
Yunjia Bao, Dhong Yeon Cheong, Nicholas L. Rodd +3
Precision experiments increasingly target weakly coupled waves, including axion dark matter and gravitational radiation. Such waves are commonly described as classical fields, yet…
Spectator Composes a Gravitational Canon: Spectator-field-triggered Phase Transition During Inflation and its Anisotropic Gravitational Wave Signals
Yunjia Bao, Keisuke Harigaya
We propose a general framework in which a phase transition is triggered during cosmic inflation by the slow-roll dynamics of a spectator field. The topological defects formed at th…
Intrinsically Quantum Effects of Axion Dark Matter are Undetectable
Yunjia Bao, Dhong Yeon Cheong, Nicholas L. Rodd +3
Is the usual treatment of axion dark matter as a classical field reliable? We show that the answer is subtle: the axion field could well be in a quantum state that has no complete…
Anatomy of Parity-violating Trispectra in Galaxy Surveys
Yunjia Bao, Lian-Tao Wang, Zhong-Zhi Xianyu +1
Parity-violating interactions are ubiquitous phenomena in particle physics. If they are significant during cosmic inflation, they can leave imprints on primordial perturbations and…
Accidental Suppression of Wilson Coefficients in Higgs Coupling
Yunjia Bao, Jiayin Gu, Zhen Liu +2
Higgs couplings are essential probes for physics beyond the Standard Model (BSM) since they can be modified by new physics, such as through the Higgs portal interaction $|H|^2\math…