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
ISSN: 24700010
Editorial
AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA, Estados Unidos America
Tipo de documento: Article
Volumen: 99 Número: 8
Páginas:
WOS Id: 000464746300006

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