10 citations · 73 across the 52 of their papers we have counts for
52 papers
Spectral Theorems for Generalized Weyl Nodes with Impurities in a Magnetic Field
Dan Solomon, Ho-Ung Yee
We prove a few spectral theorems for the density of states of a Weyl node with arbitrary topology. We show that the density of extended states of a Weyl node with random impurity p…
The Vacuum Polarization tensor in 1+1 dimensional space-time
Dan Solomon
Quantum field theory (QFT) is supposed to be gauge invariant. However it has been well established that a direct calculation of the vacuum polarization tensor produces a non-gauge…
Taming the divergent terms that occur during adiabatic switching in perturbation theory
Dan Solomon
A potential problem with adiabatic switching in perturbation theory is that divergent terms appear in the series solution. An example of this was presented by C. Brouder et al [4]…
Why do non-gauge invariant terms appear in the vacuum polarization tensor?
Dan Solomon
It is will known that quantum field theory at the formal level is gauge invariant. However a calculation of the vacuum polarization tensor will include non-gauge invariant terms. T…
The expectation value of the field operator
Dan Solomon
Much of the mathematical development of quantum field theory has been in support of determining the S-matrix in order to calculate scattering cross sections. However there is also…
Deriving Z[J] from the time evolution operator
Dan Solomon
An important quantity in quantum field theory is the vacuum-to-vacuum transition amplitude in the presence of an external source. This quantity is often designated by Z[J] and is t…