Thick shell regime in the chameleon two-body problem
Por:
Kraiselburd, Lucila, Landau, Susana, Salgado, Marcelo, Sudarsky, Daniel, Vucetich, Hector
Publicada:
16 abr 2019
Categoría:
Physics and astronomy (miscellaneous)
Resumen:
In a previous paper [Phys. Rev. D 97, 104044 (2018)] we pointed out
some shortcomings of the standard approach to chameleon theories
consisting in treating the small bodies used to test the weak
equivalence principle (WEP) as test particles, whose presence do not
modify the chameleon field configuration. In that paper we developed an
alternative method to determine the relevant field configuration which
takes into account the influence of both test and source bodies, and
computed the chamaleon mediated force. Relying on that analysis we
showed that the effective acceleration of test bodies is composition
dependent even when the model is based on universal couplings. In this
paper, we improve our method by using a more suitable approximation for
the effective chameleon potential in situations where the bodies are in
the so-called ``thick shell regime.'' We then find new and more
restrictive bounds on the model's parametres by confronting the new
theoretical predictions with the empirical bounds on Eotvos parameter
comming from the lunar laser ranging experiments.
Filiaciones:
Kraiselburd, Lucila:
Univ Nacl La Plata, Fac Ciencias Astron & Geofis, Grp Astrofis Relatividad & Cosmol, Paseo Bosque S-N, RA-1900 La Plata, Buenos Aires, Argentina
Consejo Nacl Invest Cient & Tecn, Godoy Cruz 2290, RA-1425 Buenos Aires, DF, Argentina
Grupo de Astrofísica, Relatividad y Cosmología, Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de la Plata, Paseo del Bosque S/N, La Plata, 1900, Argentina
CONICET, Godoy Cruz 2290, Ciudad Autónoma de Buenos Aires, 1425, Argentina
Landau, Susana:
Consejo Nacl Invest Cient & Tecn, Godoy Cruz 2290, RA-1425 Buenos Aires, DF, Argentina
Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, Ciudad Univ Pab 1, RA-1428 Buenos Aires, DF, Argentina
Univ Buenos Aires, Fac Ciencias Exactas & Nat, IFIBA, Ciudad Univ Pab 1, RA-1428 Buenos Aires, DF, Argentina
CONICET, Godoy Cruz 2290, Ciudad Autónoma de Buenos Aires, 1425, Argentina
Departamento de Física, IFIBA, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria-Pab. i, Buenos Aires, 1428, Argentina
Salgado, Marcelo:
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, AP 70-543, Mexico City 04510, DF, Mexico
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, A.P. 70-543, México D.F., 04510, Mexico
Sudarsky, Daniel:
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, AP 70-543, Mexico City 04510, DF, Mexico
NYU, Dept Philosophy, 550 1St Ave, New York, NY 10003 USA
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, A.P. 70-543, México D.F., 04510, Mexico
Department of Philosophy, New York University, New York, NY 10003, United States
Vucetich, Hector:
Univ Nacl La Plata, Fac Ciencias Astron & Geofis, Grp Astrofis Relatividad & Cosmol, Paseo Bosque S-N, RA-1900 La Plata, Buenos Aires, Argentina
Grupo de Astrofísica, Relatividad y Cosmología, Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de la Plata, Paseo del Bosque S/N, La Plata, 1900, Argentina
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