4 papers
Removing the Cosmological Bound on the Axion Scale via Confinement During Inflation
Gia Dvali, Sophia Fitz, Lucy Komisel
We implement the scenario of early relaxation of the axion via a high scale confinement within grand unified theory and study an epoch of strong QCD in inflationary cosmolo…
The Role of Microstate Degeneracy in Phase Transitions: Gravitational Waves from Bubble Entanglement
Gia Dvali, Lucy Komisel
Vacuum bubbles, formed in first order phase transitions, have important implications for cosmology. In particular, they source gravitational waves. Usually, it is assumed that, onc…
The Strong- Problem and its Gauge Axion solution as Evidence for Fundamental Strings
Gia Dvali, Lucy Komisel, Otari Sakhelashvili +1
The topological susceptibility of the QCD vacuum provides an understanding of -vacua as vacua of a Chern-Simons gauge theory. In this way, it gives an immediate proof of the ph…
Cosmic strings and domain walls of the QCD quark condensate with and without a hidden axion
Gia Dvali, Lucy Komisel, Anja Stuhlfauth
The chiral quark condensate of QCD, which spontaneously breaks the anomalous axial symmetry, gives rise to axionic type global string-wall systems. If a Peccei-Quinn type axion exi…