TY  - JOUR
AU  - Elhatisari, Serdar
AU  - Lee, Dean
AU  - Rupak, Gautam
AU  - Epelbaum, Evgeny
AU  - Krebs, Hermann
AU  - Lähde, Timo
AU  - Luu, Tom
AU  - Meissner, Ulf-G.
TI  - Ab initio alpha–alpha scattering
JO  - Nature 
VL  - 528
IS  - 7580
SN  - 1476-4687
CY  - London [u.a.]
PB  - Nature Publ. Group78092
M1  - FZJ-2016-00906
SP  - 111 - 114
PY  - 2015
N1  - 6 pages, 6 figures
AB  - Processes involving alpha particles and alpha-like nuclei comprise a major part of stellar nucleosynthesis and hypothesized mechanisms for thermonuclear supernovae. In an effort towards understanding alpha processes from first principles, we describe in this letter the first ab initio calculation of alpha-alpha scattering. We use lattice effective field theory to describe the low-energy interactions of nucleons and apply a technique called the adiabatic projection method to reduce the eight-body system to an effective two-cluster system. We find good agreement between lattice results and experimental phase shifts for S-wave and D-wave scattering. The computational scaling with particle number suggests that alpha processes involving heavier nuclei are also within reach in the near future.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000365606000058
C6  - pmid:26632590
DO  - DOI:10.1038/nature16067
UR  - https://juser.fz-juelich.de/record/281207
ER  -