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21 papers · 1 filter
On sphaleron deformations induced by Yukawa interactions
M. Axenides, A. Johansen, H. B. Nielsen
Due to the presence of the chiral anomaly sphalerons with Chern-Simons number a half (CS=1/2) are the only static configurations that allow for a fermion level crossing in the two-…
Rotational Corrections to and Isovector Magnetic Moment of the Nucleon
Chr. V. Christov, K. Goeke, P. Pobilitsa +3
The rotational corrections to the axial vector constant and the isovector magnetic moment of the nucleon are studied in the Nambu -- Jona-Lasinio model. We follow a semicla…
Topological Classification of Odd-Parity Sphaleron Deformations
Minos Axenides, Andrei Johansen
We discuss topological aspects of the electroweak sphaleron and its odd-parity deformations. We demonstrate that they are uniquely classified in terms of their odd and even-parity…
Anathematizing the Guralnik and Manohar Inequality for \barΛ
I. I. Bigi, N. G. Uraltsev
There is a recent claim by Guralnik and Manohar \cite{GM} to have established a rigorous lower bound on , the asymptotic difference between the mass of a heavy flavour {\em…
Liouville theory and special coadjoint Virasoro orbits
A. Gorsky, A. Johansen
We describe the Hamiltonian reduction of the coajoint Kac-Moody orbits to the Virasoro coajoint orbits explicitly in terms of the Lagrangian approach for the Wess-Zumino-Novikov-Wi…
Fermion sea along the sphaleron barrier
Dmitri Diakonov, Maxim Polyakov, Peter Sieber +2
In this revised version we have improved the treatment of the top and bottom quark mass. This leads to slight changes of the numerical results, especially of those presented in Fig…