Koelling, S., Epelbaum, E., Krebs, H.
We derive the leading two-pion exchange contributions to the two-nucleon electromagnetic current operator in the framework of chiral effective field theory using the method of unitary transformation....
In this note we prove to all orders in the small scale expansion that all off-shell parameters which appear in the chiral effective Lagrangian with explicit Delta(1232) isobar degrees of freedom can...
Einfluss des Anbausystems auf Ertrag und Gesundheit von Winterweizen (2009)
Krebs, H., Zanetti, S., Jenny, E., Zihlmann, U., Tschachtli, R.
In a long-term trial in central Switzerland, yield and health of winter wheat was examined under organic, extensive and intensive management. In the organic cropping system, soil was ploughed and...
Einfluss des Anbausystems auf Ertrag und Gesundheit von Winterweizen (2009)
Krebs, H., Zanetti, S., Jenny, E., Zihlmann, U., Tschachtli, R.
In a long-term trial in central Switzerland, yield and health of winter wheat was examined under organic, extensive and intensive management. In the organic cropping system, soil was ploughed and...
On-shell consistency of the Rarita-Schwinger field formulation (2008)
We prove that any bilinear coupling of a massive spin-3/2 field can be brought into a gauge invariant form suggested by Pascalutsa by means of a non-linear field redefinition. The corresponding field...
Isospin-breaking two-nucleon force with explicit Delta-excitations (2008)
Epelbaum, E., Krebs, H., Meißner, Ulf-G.
We study the leading isospin-breaking contributions to the two-nucleon two-pion exchange potential due to explicit Delta degrees of freedom in chiral effective field theory. In particular, we find...
Subleading contributions to the chiral three-nucleon force I: long-range terms (2007)
Bernard, V., Epelbaum, E., Krebs, H., Meißner, Ulf-G.
We derive the long-range contributions to the tree-nucleon force at next-to-next-to-next-to-leading order in the chiral expansion. We give both momentum and coordinate space representations.
Delta-excitations and the three-nucleon force (2007)
Epelbaum, E., Krebs, H., Meißner, Ulf-G.
We study the three-nucleon force in chiral effective field theory with explicit Delta-resonance degrees of freedom. We show that up to next-to-next-to-leading order, the only contribution to the...
Renormalization of two-loop diagrams in scalar lattice field theory (2006)
We present a method to calculate to very high precision the coefficients of the divergences occuring in two-loop diagrams for a massive scalar field on the lattice. The approach is based on...
The triton and three-nucleon force in nuclear lattice simulations (2005)
Borasoy, B., Krebs, H., Lee, D.
We study the triton and three-nucleon force at lowest chiral order in pionless effective field theory both in the Hamiltonian and Euclidean nuclear lattice formalism. In the case of the Euclidean...
Greens function of a free massive scalar field on the lattice (2005)
We propose a method to calculate the Greens function of a free massive scalar field on the lattice numerically to very high precision. For masses m < 2 (in lattice units) the massive Greens function...
Orthonormalization procedure for chiral effective nuclear field theory (2004)
Krebs, H., Bernard, V., Meißner, Ulf-G.
We show that the Q-box expansion of nuclear many-body physics can be applied in nuclear effective field theory with explicit pions and external sources. We establish the corresponding power counting...
Krebs, H., Bernard, V., Meißner, Ulf-G.
Near threshold neutral pion electroproduction on the deuteron is studied in the framework of heavy baryon chiral perturbation theory. We include the next-to-leading order corrections to the...
Near threshold neutral pion electroproduction on deuterium in chiral perturbation theory (2002)
Krebs, H., Bernard, V., Meißner, Ulf-G.
Near threshold neutral pion electroproduction on the deuteron is studied in the framework of baryon chiral perturbation theory at next-to-leading order in the chiral expansion. We develop the...
On neutral pion electroproduction off deuterium (1999)
Bernard, V., Krebs, H., Meißner, Ulf-G.
Threshold neutral pion electroproduction on the deuteron is studied in the framework of baryon chiral perturbation theory at next-to-leading order in the chiral expansion. To this order in small...
SOLID-STATE REACTION OF Zr-Fe MULTILAYERED FILMS INVESTIGATED BY MÖSSBAUER SPECTROSCOPY (1990)
Michaelsen, C., Piepenbring, M., Krebs, H.
Multilayered Zr - Fe films of average composition Zr50Fe50 were prepared by sputtering. The samples were solid - state reacted and subsequently investigated by Conversion Electron Mössbauer...
SOLID-STATE REACTION OF Zr-Fe MULTILAYERED FILMS INVESTIGATED BY MÖSSBAUER SPECTROSCOPY (1990)
Michaelsen, C., Piepenbring, M., Krebs, H.
Multilayered Zr - Fe films of average composition Zr50Fe50 were prepared by sputtering. The samples were solid - state reacted and subsequently investigated by Conversion Electron Mössbauer...
SOLID-STATE REACTION OF Zr-Fe MULTILAYERED FILMS INVESTIGATED BY MÖSSBAUER SPECTROSCOPY (1990)
Michaelsen, C., Piepenbring, M., Krebs, H.
Multilayered Zr - Fe films of average composition Zr50Fe50 were prepared by sputtering. The samples were solid - state reacted and subsequently investigated by Conversion Electron Mössbauer...
Jaenicke, R, Krebs, H, Rudolph, R, Woenckhaus, C
Kinetic analysis of the in vitro reconstitution of glyceraldehyde-3-phosphate dehydrogenase [D-glyceraldehyde-3-phosphate:NAD+ oxidoreductase (phosphorylating), EC 1.2.1.12] from yeast showed that...
Jaenicke, R, Krebs, H, Rudolph, R, Woenckhaus, C
Kinetic analysis of the in vitro reconstitution of glyceraldehyde-3-phosphate dehydrogenase [D-glyceraldehyde-3-phosphate:NAD+ oxidoreductase (phosphorylating), EC 1.2.1.12] from yeast showed that...