16 citations · 33 across the 6 of their papers we have counts for
6 papers
A Graphical Coaction for FRW Wavefunction Coefficients
Andrew McLeod, Andrzej Pokraka, Lecheng Ren
We show that the wavefunction of the universe in theories of conformally coupled scalars in power-law Friedmann-Robertson-Walker (FRW) cosmologies satisfies a graphical coaction, b…
The Bridge Between Chiral Lagrangians and QCD Sum-Rules
Amir H. Fariborz, J. Ho, A. Pokraka +1
Properties of the scale-factor matrices forming a bridge between the mesonic fields of chiral Lagrangians and quark-level structures of QCD sum-rules are reviewed. The scale-factor…
Parapositronium can decay into three photons
Andrzej Pokraka, Andrzej Czarnecki
We calculate the decay rate and spectrum for the decay of parapositronium into three photons. This process violates charge conjugation symmetry. It is forbidden within quantum elec…
Positronium Decay into a Photon and Neutrinos
Andrzej Pokraka, Andrzej Czarnecki
We determine the rates and energy and angular distributions of the positronium decays into a photon and a neutrino-antineutrino pair, Ps-->gamma+nu+anti-nu. We find that both posit…
Dimensional Effects on the Density of States in Systems with Quasi-Relativistic Dispersion Relations and Potential Wells
A. Pokraka, R. Dick
Motivated by the recent discoveries of materials with quasi-relativistic dispersion relations, we determine densities of states in materials with low dimensional substructures and…
Connections between chiral Lagrangians and QCD sum-rules
Amir H. Fariborz, A. Pokraka, T. G. Steele
It is shown how a chiral Lagrangian framework can be used to derive relationships connecting quark-level QCD correlation functions to mesonic-level two-point functions. Crucial ing…