Momentum sharing in imbalanced Fermi systems
Abstract
The atomic nucleus is composed of two different kinds of fermions, protons and neutrons. If the protons and neutrons did not interact, the Pauli exclusion principle would force the majority fermions (usually neutrons) to have a higher average momentum. Our high-energy electron scattering measurements using 12C, 27Al, 56Fe and 208Pb targets show that, even in heavy neutron-rich nuclei, short-range interactions between the fermions form correlated high-momentum neutron-proton pairs. Thus, in neutron-rich nuclei, protons have a greater probability than neutrons to have momentum greater than the Fermi momentum. This finding has implications ranging from nuclear few body systems to neutron stars and may also be observable experimentally in two-spin state, ultra-cold atomic gas systems.
Cite
@article{arxiv.1412.0138,
title = {Momentum sharing in imbalanced Fermi systems},
author = {O. Hen and M. Sargsian and L. B. Weinstein and E. Piasetzky and H. Hakobyan and D. W. Higinbotham and M. Braverman and W. K. Brooks and S. Gilad and K. P. Adhikari and J. Arrington and G. Asryan and H. Avakian and J. Ball and N. A. Baltzell and M. Battaglieri and A. Beck and S. May-Tal Beck and I. Bedlinskiy and W. Bertozzi and A. Biselli and V. D. Burkert and T. Cao and D. S. Carman and A. Celentano and S. Chandavar and L. Colaneri and P. L. Cole and V. Crede and A. DAngelo and R. De Vita and A. Deur and C. Djalali and D. Doughty and M. Dugger and R. Dupre and H. Egiyan and A. El Alaoui and L. El Fassi and L. Elouadrhiri and G. Fedotov and S. Fegan and T. Forest and B. Garillon and M. Garcon and N. Gevorgyan and Y. Ghandilyan and G. P. Gilfoyle and F. X. Girod and J. T. Goetz and R. W. Gothe and K. A. Griffioen and M. Guidal and L. Guo and K. Hafidi and C. Hanretty and M. Hattawy and K. Hicks and M. Holtrop and C. E. Hyde and Y. Ilieva and D. G. Ireland and B. I. Ishkanov and E. L. Isupov and H. Jiang and H. S. Jo and K. Joo and D. Keller and M. Khandaker and A. Kim and W. Kim and F. J. Klein and S. Koirala and I. Korover and S. E. Kuhn and V. Kubarovsky and P. Lenisa and W. I. Levine and K. Livingston and M. Lowry and H. Y. Lu and I. J. D. MacGregor and N. Markov and M. Mayer and B. McKinnon and T. Mineeva and V. Mokeev and A. Movsisyan and C. Munoz Camacho and B. Mustapha and P. Nadel-Turonski and S. Niccolai and G. Niculescu and I. Niculescu and M. Osipenko and L. L. Pappalardo and R. Paremuzyan and K. Park and E. Pasyuk and W. Phelps and S. Pisano and O. Pogorelko and J. W. Price and S. Procureur and Y. Prok and D. Protopopescu and A. J. R. Puckett and D. Rimal and M. Ripani and B. G. Ritchie and A. Rizzo and G. Rosner and P. Rossi and P. Roy and F. Sabatie and D. Schott and R. A. Schumacher and Y. G. Sharabian and G. D. Smith and R. Shneor and D. Sokhan and S. S. Stepanyan and S. Stepanyan and P. Stoler and S. Strauch and V. Sytnik and M. Taiuti and S. Tkachenko and M. Ungaro and A. V. Vlassov and E. Voutier and D. Watts and N. K. Walford and X. Wei and M. H. Wood and S. A. Wood and N. Zachariou and L. Zana and Z. W. Zhao and X. Zheng and I. Zonta},
journal= {arXiv preprint arXiv:1412.0138},
year = {2014}
}
Comments
Published in Science. 10 pages, 3 figures