3 citations · 4 across the 2 of their papers we have counts for
6 papers
Regular and chaotic interactions of two BPS dyons at low energy
Ricardo Fariello, Hilmar Forkel, Gastao Krein
We identify and analyze quasiperiodic and chaotic motion patterns in the time evolution of a classical, non-Abelian Bogomol'nyi-Prasad-Sommerfield (BPS) dyon pair at low energies.…
Yang-Mills instantons in closed Robertson-Walker spacetime
Hilmar Forkel
We construct a four-parameter class of self-dual instanton solutions of the classical SU(2)-Yang-Mills equations in a closed Euclidean Robertson-Walker space-time.
New chiral-symmetry-breaking operators in pseudoscalar QCD sum rules
Hilmar Forkel
Nonperturbative Wilson coefficients associated with the leading chiral-symmetry-breaking operators in the operator product expansion of the pseudoscalar QCD correlation function ar…
Instantons and Glueballs
H. Forkel
We investigate the impact of instantons on scalar glueball properties in a largely model-independent analytical approach based on the instanton-improved operator product expansion…
A Primer on Instantons in QCD
Hilmar Forkel
These are the (twice) extended notes of a set of lectures given at the ``12th Workshop on Hadronic Interactions'' at the IF/UERJ, Rio de Janeiro (31. 5. - 2. 6. 2000). The lectures…
Bag Models with Fuzzy Boundaries
Hilmar Forkel
We discuss how hadronic bag models can be generalized in the framework of fuzzy set theory to implement effects of a smooth and extended phase boundary.