103 citations · 623 across the 38 of their papers we have counts for
20 papers · 1 filter
Baryogenesis at the QCD Scale
R. Brandenberger, I. Halperin, A. Zhitnitsky
We propose a new mechanism for explaining the observed asymmetry between matter and antimatter, based on nonperturbative physics at the QCD scale. Our mechanism is a charge separat…
Domain Walls and Theta Dependence in QCD with an Effective Lagrangian Approach
T. Fugleberg, I. Halperin, A. Zhitnitsky
We suggest an anomalous effective Lagrangian which reproduces the anomalous conformal and chiral Ward identities and topological charge quantization in QCD. It is shown that the la…
Baryogenesis with QCD Domain Walls
R. Brandenberger, I. Halperin, A. Zhitnitsky
We propose a new baryosymmetric mechanism for baryogenesis which takes place at the QCD scale and is based on the existence of domain walls separating the metastable vacua from the…
Axion potential, topological defects and CP-odd bubbles in QCD
Igor Halperin, Ariel Zhitnitsky
It follows on general grounds that the theta dependence in QCD is more complicated than suggested by the large N_c approach or instanton arguments. Generically, the vacuum energy E…
Anomalous Effective Lagrangian and Theta Dependence in QCD at Finite N_c
Igor Halperin, Ariel Zhitnitsky
We generalize the large N_c Di Vecchia-Veneziano-Witten (VVW) effective chiral Lagrangian to the case of finite N_c by constructing the anomalous effective Lagrangian for QCD. The…
Can Theta/N Dependence for Gluodynamics be Compatible with 2 pi Periodicity in Theta ?
Igor Halperin, Ariel Zhitnitsky
In a number of field theoretical models the vacuum angle θenters physics in the combination θ/N, where N stands generically for the number of colors or flavors, in an apparent cont…