463 citations · 777 across the 35 of their papers we have counts for
35 papers
N-quantum calculation of the hydrogen atom with one-photon exchange
O. W. Greenberg, Steve Cowen
The N-quantum approach (NQA) to quantum field theory uses the complete and irreducible set of in or out fields, including in or out fields for bound states, as standard building bl…
Construction of asymptotic fields for a charged particle
O. W. Greenberg, Steve Cowen
Asymptotic fields do not exist in theories with massless particles and fields, because the vacuum matrix elements of products of the interacting fields in such theories do not have…
Remarks on a challenge to the relation between and Lorentz violation
O. W. Greenberg
The objection [arXiv:1103.0168] to my theorem [arXiv:hep-ph/0201258] that violation of symmetry implies violation of Lorentz covariance is based on a nonlocal model in which…
Quarks and quantum statistics
O. W. Greenberg
I write about Héctor, his contributions to the early work in the quark model, and a general discussion of quantum statistics
Review of the N-quantum Approach to Bound States
O. W. Greenberg
We describe a method of solving quantum field theories using operator techniques based on the expansion of interacting fields in terms of asymptotic fields. For bound states, we in…
Study of the vacuum matrix element of products of parafields
O. W. Greenberg, A. K. Mishra
We study the vacuum matrix elements of products of parafields using graphical and combinatorial methods.