Rodríguez Quintero, JoséPène, OlivierAbada, A.2017-09-212017-09-211997Rodríguez Quintero, J., Pène, O. y Abada, A. (1997). Multibody neutrino exchange in a neutron star: neutrino sea and border effects. Physics Letters B, 423 (3-4), 355-363.0370-2693 (impreso)1873-2445 (electrónico)http://hdl.handle.net/11441/64565The interaction due to the exchange of massless neutrinos between neutrons is a long-range force. Border effects on this multibody exchange inside a dense core are studied and computed analytically in dimensions. We demonstrate in this work that a proper treatment of the star's border effect automatically incorporates the condensate contribution as a consequence of the appropriate boundary conditions for the neutrino Feynman propagator inside the star. The total multibody exchange contribution is infrared-safe and vanishes exactly in dimensions. The general conclusion of this work is that the border effect does not modify the result that neutrino exchange is infrared-safe. This toy model prepares the ground and gives the tools for the study of the realistic star.application/pdfengAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccesshttps://doi.org/10.1016/S0370-2693(98)00037-9