142 citations · 383 across the 9 of their papers we have counts for
6 papers · 1 filter
The Schwinger mechanism revisited
Thomas D. Cohen, David A. McGady
The vacuum persistence probability, , for a system of charged fermions in a fixed, external, and spatially homogeneous electric field, was derived long ago by Schwinger…
On Skyrmion semiclassical quantization in the presence of an isospin chemical potential
Thomas D. Cohen, Juan A. Ponciano, Norberto N. Scoccola
The semiclassical description of Skyrmions at small isospin chemical potential is carefully analyzed. We show that when the calculation of the energy of a nucleon is performe…
The chiral condensate in a constant electromagnetic field
Thomas D. Cohen, David A. McGady, Elizabeth S. Werbos
We study the shift of the chiral condensate in a constant electromagnetic field in the context of chiral perturbation theory. Using the Schwinger proper-time formalism, we derive a…
Heavy baryons in the Skyrme model: the role of highly anharmonic collective motion
Thomas D. Cohen, Paul M. Hohler
In the heavy quark and large Nc limits, ordinary (exotic) heavy baryons can be considered as bound states of heavy mesons (anti-mesons)and chiral solitons. In these limits, the hea…
Strange results from chiral soliton models
Aleksey Cherman, Thomas D. Cohen
The standard collective quantization treatment of the strangeness content of the nucleon in chiral soliton models such as the Skyrmion is shown to be inconsistent with the semi-cla…
The Pion Cloud in Quenched QCD
Thomas D. Cohen, Derek B. Leinweber
Diagrammatic methods and Large QCD are used to argue that the nucleon as calculated in quenched QCD contains physics which can be ascribed to the pion cloud of the nucleon. I…