Energy ofnidentical bosons in a finite volume atO(L−7)

William Detmold, Martin J. Savage
2008 Physical Review D  
The volume dependence of the ground-state energy of n identical bosons with short-range interactions in a periodic spatial volume with sides of length L is calculated at order L^-7 in the large volume expansion. This result will enable a refined determination of the pi^+ pi^+ pi^+ interaction from lattice QCD calculations.
doi:10.1103/physrevd.77.057502 fatcat:d5ttm45axvcxfgdraxetlubnmu