157 citations · 609 across the 27 of their papers we have counts for
28 papers
Audible curvaton: modulated phase transition as the origin of large-scale curvature perturbations and gravitational wave anisotropies
Wen-Yuan Ai, Gabriele Franciolini, Xin Wang +1
We propose a post-inflationary first-order phase transition modulated by a light spectator field as the origin of primordial large-scale curvature perturbations. Spectator fluctuat…
Dynamical criterion for biased domain-wall formation
Wen-Yuan Ai
In the presence of a bias term, the conventional condition for forming a domain-wall network is , with , w…
Reviving primordial black hole formation in slow first-order phase transitions
Wen-Yuan Ai, Ke-Pan Xie
Large curvature perturbations generated during slow first-order phase transitions are a promising source of primordial black holes. However, recent analyses suggested that the mech…
Curvaton-assisted hilltop inflation
Wen-Yuan Ai, Stephen F. King, Xin Wang +1
Following the recent Atacama Cosmology Telescope (ACT) results, we consider hilltop inflation where the inflaton is coupled to a curvaton, simultaneously addressing two main challe…
High-frequency gravitational waves from first-order phase transitions
Wen-Yuan Ai
First-order phase transitions in the early Universe are a well-motivated source of gravitational waves (GWs). In this Letter, we identify a previously overlooked GW production mech…
Logarithmically divergent friction on ultrarelativistic bubble walls
Wen-Yuan Ai
We calculate the friction experienced by ultrarelativistic bubble walls resulting from the light-to-heavy transition process, with finite-wall-width effects fully…
Fate of homogeneous -symmetric scalar condensates
Wen-Yuan Ai, Zi-Liang Wang
Dark matter, if represented by a -symmetric scalar field, can manifest as both particles and condensates. In this paper, we study the evolution of an oscillating homo…
Model-independent bubble wall velocities in local thermal equilibrium
Wen-Yuan Ai, Benoit Laurent, Jorinde van de Vis
Accurately determining bubble wall velocities in first-order phase transitions is of great importance for the prediction of gravitational wave signals and the matter-antimatter asy…
Wilsonian approach to the interaction
Wen-Yuan Ai, Jean Alexandre, Sarben Sarkar
We study the renormalisation of the non-Hermitian -symmetric scalar field theory with the interaction using the Wilsonian approach and…
-symmetric theory
Wen-Yuan Ai, Carl M. Bender, Sarben Sarkar
The scalar field theory with potential () is ill defined as a Hermitian theory but in a non-Hermitian $\math…
Instability of bubble expansion at zero temperature
Wen-Yuan Ai, Juan S. Cruz, Bjorn Garbrecht +1
In the context of false vacuum decay at zero temperature, it is well known that bubbles expand with uniform proper acceleration. We show that this uniformly accelerating expansion…
The limits of the strong problem
Wen-Yuan Ai, Juan S. Cruz, Bjorn Garbrecht +1
While violation has never been observed in the strong interactions, the QCD Lagrangian admits a -odd topological interaction proportional to the so called angle, which…
Dissipation of oscillating scalar backgrounds in an FLRW universe
Zi-Liang Wang, Wen-Yuan Ai
We study the dissipation of oscillating scalar backgrounds in a spatially flat Friedmann-Lemaître-Robertson-Walker universe using non-equilibrium quantum field theory. To be concre…
Bubble wall velocities in local equilibrium
Wen-Yuan Ai, Bjorn Garbrecht, Carlos Tamarit
It is commonly expected that a friction force on the bubble wall in a first-order phase transition can only arise from a departure from thermal equilibrium in the plasma. Recently…
Oscillating scalar dissipating in a medium
Wen-Yuan Ai, Marco Drewes, Dražen Glavan +1
We study how oscillations of a scalar field condensate are damped due to dissipative effects in a thermal medium. Our starting point is a non-linear and non-local condensate equati…
Nonsingular black hole in two-dimensional asymptotically flat spacetime
Wen-Yuan Ai
We study a special two-dimensional dilaton gravity with Lagrangian where is a parameter of dimension mass. This theory…
Gradient effects on false vacuum decay in gauge theory
Wen-Yuan Ai, Juan S. Cruz, Bjorn Garbrecht +1
We study false vacuum decay for a gauged complex scalar field in a polynomial potential with nearly degenerate minima. Radiative corrections to the profile of the nucleated bubble…
Schwinger effect and false vacuum decay as quantum-mechanical tunneling of a relativistic particle
Wen-Yuan Ai, Marco Drewes
We present a simple and intuitive description of both, the Schwinger effect and false vacuum decay through bubble nucleation, as tunneling problems in one-dimensional relativistic…
A note on the novel 4D Einstein-Gauss-Bonnet gravity
Wen-Yuan Ai
Recently, a novel 4D Einstein-Gauss-Bonnet gravity has been proposed by Glavan and Lin [Phys. Rev. Lett. 124, 081301 (2020)] by rescaling the coupling and ta…
Absence of violation in the strong interactions
Wen-Yuan Ai, Juan S. Cruz, Bjorn Garbrecht +1
We derive correlation functions for massive fermions with a complex mass in the presence of a general vacuum angle. For this purpose, we first build the Green's functions in the on…
Functional methods for false vacuum decay in real time
Wen-Yuan Ai, Bjorn Garbrecht, Carlos Tamarit
We present the calculation of the Feynman path integral in real time for tunneling in quantum mechanics and field theory, including the first quantum corrections. For this purpose,…
Correspondence between Thermal and Quantum Vacuum Transitions around Horizons
Wen-Yuan Ai
Recently, there are comparable revised interests in bubble nucleation seeded by black holes. However, it is debated in the literature that whether one shall interpret a static boun…
Radiative effects on false vacuum decay in Higgs-Yukawa theory
Wen-Yuan Ai, Bjorn Garbrecht, Peter Millington
We derive fermionic Green's functions in the background of the Euclidean solitons describing false vacuum decay in a prototypal Higgs-Yukawa theory. In combination with appropriate…
A cosmological model from emergence of space
Zi-Liang Wang, Wen-Yuan Ai, Hua Chen +1
Many studies have been carried out since T.Padmanabhan proposed that the cosmic acceleration can be understood from the perspective that spacetime dynamics is an emergent phenomeno…