title: Electromagnetic Response of ^{12}C: A First-Principles Calculation.
abstract: The longitudinal and transverse electromagnetic response functions of ^{12}C are computed in a "first-principles" Green's function Monte Carlo calculation, based on realistic two- and three-nucleon interactions and associated one- and two-body currents. We find excellent agreement between theory and experiment and, in particular, no evidence for the quenching of the measured versus calculated longitudinal response. This is further corroborated by a reanalysis of the Coulomb sum rule, in which the contributions from the low-lying J^{π}=2^{+}, 0_{2}^{+} (Hoyle), and 4^{+} states in ^{12}C are accounted for explicitly in evaluating the total inelastic strength.
authors: Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors: A
authors: A
authors: Lovato
authors: Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors: S
authors: S
authors: Gandolfi
authors: Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors: J
authors: J
authors: Carlson
authors: Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors: Steven C
authors: SC
authors: Pieper
authors: Theory Center, Jefferson Lab, Newport News, Virginia 23606, USA.|Department of Physics, Old Dominion University, Norfolk, Virginia 23529, USA.
authors: R
authors: R
authors: Schiavilla