Recently we have proposed a new cutâ€“off scheme for pion loop integrals in the twoâ€“pion exchange potential. This method allows for a consistent implementation of constraints from pionâ€“nucleonâ€¦ (More)

The forces between two (a few) nucleons is one of the most studied problems in theoretical physics. Over many decades, a standard picture had evolved, in which these forces are described in terms ofâ€¦ (More)

We present the first Green's function MonteÂ Carlo calculations of light nuclei with nuclear interactions derived from chiral effective field theory up to next-to-next-to-leading order. Up to thisâ€¦ (More)

We consider the twoâ€“nucleon system at next-to-next-to-next-to-leading order (NLO) in chiral effective field theory. The twoâ€“nucleon potential at NLO consists of one-, twoand three-pion exchanges andâ€¦ (More)

We study the two-pion exchange potential at next-to-next-to-leading order in chiral effective field theory. We propose a new cutâ€“off scheme for the pion loop integrals based on spectral functionâ€¦ (More)

Effective chiral Lagrangians can be used to investigate the dynamics of pion, pionâ€“nucleon as well as nucleonâ€“nucleon interactions. In all cases, one has to consider two distinct contributions,â€¦ (More)

A consistent formulation of a field theory involving interacting spin-3/2 degrees of freedom is an old and much studied problem, see e.g. Refs. [1, 2, 3]. Recently, it has attracted renewed interestâ€¦ (More)

We outline the structure of the nuclear force in the framework of chiral effective field theory of QCD and review recent applications to processes involving few nucleons.

We investigate the behaviour of the nuclear forces as a function of the light quark masses (or, equivalently, pion mass) in the framework of chiral effective field theory at next-to-leading order.â€¦ (More)

Processes such as the scattering of alpha particles (4He), the triple-alpha reaction, and alpha capture play a major role in stellar nucleosynthesis. In particular, alpha capture on carbon determinesâ€¦ (More)