Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1998-07-22
Nucl.Phys. A646 (1999) 83-107
Physics
Nuclear Physics
Nuclear Theory
27 pages, Latex, 3 eps files, epsfig needed, slightly modified, to be published in Nucl. Phys. A
Scientific paper
10.1016/S0375-9474(98)00614-9
We show how effectively effective quantum field theories work in nuclear physics. Using the physically transparent cut-off regularization, we study the simplest nuclear systems of two nucleons for both bound and scattering states at a momentum scale much less than the pion mass. We consider all the static properties of the deuteron, the two-nucleon scattering phase-shifts, the n + p --> d + \gamma process at thermal energy and the solar proton fusion process p + p --> d + e(+) + \nu(e), and we demonstrate that these are all described with great accuracy in the expansion to the next-to-leading order. We explore how a "new" degree of freedom enters in an effective theory by turning on and off the role of the pion in the Lagrangian.
Kubodera Kuniharu
Min Dong-Pil
Park Tae-Sun
Rho Mannque
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