197 citations · 1.6k across the 45 of their papers we have counts for
12 papers · 1 filter
The QCD theta-parameter in canonical quantization
Wen-Yuan Ai, Bjorn Garbrecht, Carlos Tamarit
The role of the QCD theta-parameter is investigated in pure Yang-Mills theory in the spacetime given by the four-dimensional Euclidean torus. While in this setting the introduction…
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…
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…
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,…