110 research outputs found
Doublet channel neutron-deuteron scattering in leading order effective field theory
The doublet channel neutron-deuteron scattering amplitude is calculated in
leading order effective field theory (EFT). It is shown that this amplitude
does not depend on a constant contact interaction three-body force.
Satisfactory agreement with available data is obtained when only two-body
forces are included.Comment: Conference talk (Gegelia) at "Mesons & Light Nuclei '01" Prague,
Czech Republic, 2-6 July, 2001, 5 pages, RevTe
In-matter three-body problem
We formulate three-dimensional equations for the finite temperature in-matter
three-body problem. Our approach takes into account the full infinite series
for the effective pair-interaction kernel, so that all possible two-body
sub-processes allowed by the underlying Hamiltonian are retained.Comment: 5 pages, contribution to The 16th National Congress 2005 - Australian
Institute of Physic
On the Wilsonian renormalization group equation for nuclear current operators
We present the solution to the recently derived Wilsonian renormalization
group (RG) equation for nuclear current operators. In order to eliminate the
present ambiguity in the RG equation itself, we introduce a new condition
specifying the cutoff independence of the five point Green function
corresponding to the two-body propagator with current operator insertion. The
resulting effective current operator is then shown to obey a modified
Ward-Takahashi identity which differs from the usual one, but that nevertheless
leads to current conservation.Comment: 12 page
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