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Flow Equations without Mean Field Ambiguity
Joerg Jaeckel, Christof Wetterich
We compare different methods used for non-perturbative calculations in strongly interacting fermionic systems. Mean field theory often shows a basic ambiguity related to the possib…
Understanding the Fierz Ambiguity of Partially Bosonized Theories
Joerg Jaeckel
A useful tool in non perturbative studies of fermionic theories is partial bosonization. However, partial bosonization is often connected to an ambiguity due to Fierz rearrangement…
Loop Corrections to Scalar Quintessence Potentials
Michael Doran, Joerg Jaeckel
The stability of scalar quintessence potentials under quantum fluctuations is investigated both for uncoupled models and models with a coupling to fermions. We find that uncoupled…
Loop Corrections to Scalar Quintessence Potentials
M. Doran, J. Jaeckel
The stability of scalar quintessence potentials under quantum fluctuations is investigated for both uncoupled models and models with a coupling to fermions. We find that uncoupled…