19 citations · 49 across the 3 of their papers we have counts for
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Baryons in the large N limit of the massive two-dimensional Nambu-Jona-Lasinio model
Christian Boehmer, Felix Karbstein, Michael Thies
Baryons in the massive Nambu-Jona-Lasinio model in 1+1 dimensions (the massive chiral Gross-Neveu model) are studied in the limit of an infinite number of flavors. The baryon mass…
Integrating out the Dirac sea: Effective field theory approach to exactly solvable four-fermion models
Felix Karbstein, Michael Thies
We use 1+1 dimensional large N Gross-Neveu models as a laboratory to derive microscopically effective Lagrangians for positive energy fermions only. When applied to baryons, the Eu…
Divergence of the axial current and fermion density in Gross-Neveu models
Felix Karbstein, Michael Thies
The divergence of the axial current is used to relate the spatial derivative of the fermion density to the bare fermion mass and scalar/pseudoscalar condensates in 1+1 dimensional…
How to get from imaginary to real chemical potential
Felix Karbstein, Michael Thies
Using the exactly solvable Gross-Neveu model as theoretical laboratory, we analyse in detail the relationship between a relativistic quantum field theory at real and imaginary chem…