463 citations · 777 across the 35 of their papers we have counts for
14 papers · 1 filter
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…
Schematic model of generations
O. W. Greenberg
We propose a model of generations that has exactly three generations. This model has several attractive features: There is a simple mechanism to produce the CKM quark mixings and t…
Why is CPT fundamental?
O. W. Greenberg
G. Lüders and W. Pauli proved the theorem based on Lagrangian quantum field theory almost half a century ago. R. Jost gave a more general proof based on ``axiomatic…
Hybrid Dirac Fields
O. W. Greenberg
Hybrid Dirac fields are fields that are general superpositions of the annihilation and creation parts of four Dirac spin 1/2 fields, , whose annihilation and cr…
From Wigner's Supermultiplet Theory to Quantum Chromodynamics
O. W. Greenberg
The breadth of Eugene Wigner's interests and contributions is amazing and humbling. At different times in his life he did seminal work in areas as diverse as pure mathematics and c…
CPT Violation Implies Violation of Lorentz Invariance
O. W. Greenberg
An interacting theory that violates CPT invariance necessarily violates Lorentz invariance. On the other hand, CPT invariance is not sufficient for out-of-cone Lorentz invariance.…
Conservation of Statistics and Generalized Grassmann Numbers
O. W. Greenberg
Conservation of statistics requires that fermions be coupled to Grassmann external sources. Correspondingly, conservation of statistics requires that parabosons, parafermions and q…
COVARIANT SINGLE-TIME BOUND-STATE EQUATION
O. W. Greenberg, R. Ray, F. Schlumpf
We derive a system of covariant single-time equations for a two-body bound state in a model of scalar fields and interacting via exchange of another scalar field . T…
VIRTUES OF THE HAAG EXPANSION IN QUANTUM FIELD THEORY
O. W. Greenberg
I survey the use of the Haag expansion as a technique to solve quantum field theories. After an exposition of the asymptotic condition and the Haag expansion, I report the results…
Bound States in Galilean-Invariant Quantum Field Theory
S. R. Corley, O. W. Greenberg
We consider the nonrelativistic quantum mechanics of a model of two spinless fermions interacting via a two-body potential. We introduce quantum fields associated with the two part…
(Para)bosons, (para)fermions, quons and other beasts in the menagerie of particle statistics
O. W. Greenberg, D. M. Greenberger, T. V. Greenbergest
After some general comments about statistics and the TCP theorem, I discuss experimental searches for violations of the exclusion principle and theories which allow for such violat…
Color, from baryon spectroscopy to qcd
O. W. Greenberg
I review the discovery of the color degree of freedom in hadronic physics, and the developments which led from that discovery to the local gauge theory of color, quantum chromodyna…
Scaling limit of a non-relativistic model
O. W. Greenberg
I calculate the structure function for scattering from the two-body bound state in its lowest level in a non-relativistic model of confined scalar ``quarks'' of masses and $m…