We propose a generalization of gravitational interactions where the action contains, instead of the square root of the metric determinant, the square root of determinant of some other tensor field. We analyze the action integral d(4)x root det parallel to B-mu nu + C R-mu nu parallel to as a possible alternative or addition to the Einstein gravity. Cosmological consequences of this hypothesis are briefly discussed.
机构:
Univ Copenhagen, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen O, DenmarkUniv Perugia, Dipartimento Fis, Ist Nazl Fis Nucl, Sez Perugia, Via Pascoli, I-06123 Perugia, Italy
Harmark, Troels
Marini, Andrea
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机构:
Univ Perugia, Dipartimento Fis, Ist Nazl Fis Nucl, Sez Perugia, Via Pascoli, I-06123 Perugia, ItalyUniv Perugia, Dipartimento Fis, Ist Nazl Fis Nucl, Sez Perugia, Via Pascoli, I-06123 Perugia, Italy
机构:
Fudan Univ, Ctr Field Theory & Particle Phys, Shanghai 200433, Peoples R China
Fudan Univ, Dept Phys, Shanghai 200433, Peoples R ChinaFudan Univ, Ctr Field Theory & Particle Phys, Shanghai 200433, Peoples R China
机构:
Inst Astron & Fis Espacio, RA-1428 Buenos Aires, DF, Argentina
Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, RA-1428 Buenos Aires, DF, ArgentinaInst Astron & Fis Espacio, RA-1428 Buenos Aires, DF, Argentina
Ferraro, Rafael
Fiorini, Franco
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Inst Astron & Fis Espacio, RA-1428 Buenos Aires, DF, ArgentinaInst Astron & Fis Espacio, RA-1428 Buenos Aires, DF, Argentina